JP6261290B2 - Vertical pile construction method - Google Patents

Description

The present invention, when applying a rebar shafts after drilling complete, the rebar assembly about line power sale vertical pile construction methods using ambient and internal space of the shafts.

Buildings such as power transmission towers, bridges, and elevated railways require strong foundation vertical piles. The foundation vertical pile construction work may be done in an inconvenient place in a mountainous area, and the equipment and equipment to be used should be as small as possible and easy to carry, and to the surrounding environment as much as possible during construction. After construction, construction equipment other than the main building must be completely removed.

In addition, regarding such construction in mountainous areas, it is desired to reduce the number of necessary workers as much as possible and to improve the working environment as much as possible. The present applicant has proposed various techniques described in Patent Documents 1 to 5 in order to solve such problems.

The method of constructing a debris described in Patent Document 1 and the method of constructing a debris used therein are conventionally used to prevent collapse of a vertical hole wall after excavation until finally placing concrete. After the slaughtered debris (also called “liner”) was pushed down and lifted as the excavation progressed by the push-down / pull-up device provided on the fixed base on the ground, With a special mechanism that quickly raises the debris, concrete is sequentially placed on the part without the debris while sequentially raising the debris, and after lifting the last debris, all together with the fixed base and the push-down / pull-up device It was an epoch-making invention to collect the earth retaining bodies.

In addition, according to the construction method described in Patent Document 1, the foundation vertical pile that can be formed after construction is concrete cast directly on the vertical hole wall portion without a retaining body. And the ground were completely integrated, and a strong vertical pile could be obtained. That is, according to this construction method, the peripheral frictional force between the foundation vertical pile and the ground could be remarkably improved.

The debris body installation and recovery type foundation vertical pile construction system described in Patent Document 2 is a further development and improvement of the above-described invention. At least one of the drilling means such as suction drilling equipment with rock drill, suction earth auger, rock drill, etc. can be moved in the circumferential direction and radial direction of the excavation debris, and the drilling direction can be turned freely It can be installed in a detachable and replaceable manner and withstands the reaction force generated in each excavator using the pressing force applied from the fixed base to the earth retaining body. It was possible to discharge excavated rocks and excavated debris to the ground with the necessary pressing force without the need for pressing from the ground and without disturbing the sky.

When the debris suction pipe used in the excavation apparatus / method is clogged for various reasons, the debris removal apparatus described in Patent Document 3 is debris downstream from the clogged portion. It is inserted through the suction pipe, reaches the clogged area with the remaining suction force, and is removed with a clogging scraper blade. This makes it possible to eliminate the clogging problem of the debris suction pipe. .

The sound-breaking crusher described in Patent Document 4 is a box-like body that is opened up and down, and a pair of four side walls facing each other are side walls parallel to each other, and the other pair has a lower opening smaller than the upper opening. A front wall and a rear wall, and the rear wall includes a lifting wall extending to the front wall side and vertically moving up and down by a hydraulic cylinder with respect to the rear wall, the front wall side of the lifting wall, On the surface of the front wall on the side of the elevating wall, a crushing projection that is partially pressed against the debris to be crushed is provided, and when a large debris is put into the upper opening while raising and lowering the elevating wall, crushing from the lower opening The smaller debris was discharged, the large debris was gently pressed, the noise was suppressed and the debris could be reliably crushed, and the debris after crushing did not scatter.

The vertical hole excavation apparatus described in Patent Document 5 is a compilation of the techniques described in Patent Documents 1 to 4, and excavates a small vertical hole with a small diameter by operating from the ground using the pressing force from the earth retaining body. It was possible to make almost complete unmanned drilling of vertical holes.

However, the method of assembling the reinforcing bars described in FIGS. 3 and 4 of Patent Document 2 used after the drilling of the vertical holes by the vertical hole drilling apparatus of Patent Document 5 has the following problems. .

FIG. 34 is a conceptual longitudinal sectional view showing the reinforcing bar assembling method according to the background art of the present invention. In FIG. 34, the fixed base hole 30 is the same as that described in Patent Document 2, and since the same is used in the present invention, the details will be described later. A separating / connecting mechanism 22 composed of a cylindrical liner plate 24, cast concrete 25, a double-acting hydraulic jack, and the like, and a fixing ring provided on the tip side (vertical moving side) of the connecting / disconnecting mechanism 13 23.

The separation mechanism 22 provided in the fixed foundation hole 30 which is installed on the ground E and serves as a foundation for raising and lowering the earth retaining body 15 with the above-described configuration can strongly tighten and release the earth retaining body 15 by the fixing ring 23 on the tip side. The earth retaining body 15 can be fixed and lowered in order, and can be excavated by a drilling device (described later) while being added to form a vertical shaft (in this state, the continuous earth retaining body 15) with an expanded EA. It is.

In this background art method, the vertical bars 31 having a required length are suspended on the vertical shaft by the vertical bar suspension ring 33 'lowered to the crane hook CF', and the crane hook CF is suspended. It is described that the horizontal stripes 32 are sequentially attached while the vertical stripes 31 are lowered by lowering the ′.

However, in that case, a crane that can be suspended is required to have a considerably large load. In addition, when the post-assembly rebar 35 with the horizontal bars 32 assembled to the vertical bars 31 of a predetermined length is suspended, two similar cranes with a load that can be suspended are required, and cranes (cars) are also used. There was a problem that it was impossible to construct a large mountainous area in a narrow mountainous area.

Japanese Patent No. 3947976 (FIGS. 1 to 4) Japanese Patent No. 4296450 (FIGS. 1 to 4) Utility Model Registration No. 3166471 (FIGS. 1 to 4) Utility Model Registration No. 3161703 (FIGS. 1 to 5) Utility Model Registration No. 3169579 (FIGS. 1 and 2)

The present invention is intended to ameliorate the above problem, and does not require a large crane to hang the vertical bars, and does not take up extra space for assembling the vertical and horizontal bars, and is necessary even in narrow mountainous areas. and to provide a vertical pile construction methods you permit assembly of such a length of rebar.

The rebar assembling apparatus using the vertical shaft of the present invention is a rebar assembly using the vertical shaft that uses this vertical shaft when assembling the reinforcing bars composed of the vertical and horizontal bars provided in the vertical shaft after cutting. A device,
Reinforcing bar suspension means that can suspend the vertical bars supplied by hanging with a crane and the horizontal bars to be assembled to them until the end of rebar assembly,
The reinforcing bar suspending means is fixedly supported at least at the tip of a part of the lowermost vertical bar, and can removably attach a reinforcing bar receiving other vertical bars and a supporting vertical bar fixedly supported by the reinforcing bar support At least two sets of vertical bar supporting means are provided on the upper and lower sides, one vertical bar supporting means being fixed vertical bar supporting means fixed to the upper part of the vertical shaft, and the other vertical bar supporting means being the vertical bar supporting means. It is an elevating vertical muscle support means that is above the pit and is capable of elevating and being fixed to the end of the elevating means,
The reinforcing bar cradle is moved up and down from the upper side of the vertical shaft to the bottom of the shaft while supporting the supporting vertical beam by at least one of the fixed vertical bar supporting unit and the lifting vertical bar supporting unit. Since it is a feature, in addition to the effect of the reinforcing bar assembly device using the vertical shaft, a separate reinforcing bar hanging means is not required, and it can be used even when the gap between the vertical shaft and the reinforcing bar is small. The effect is demonstrated.

The reinforcing bar assembly method using the vertical shaft of the present invention uses the reinforcing bar assembly device using the vertical shaft of the present invention, supports the supporting vertical bars by the reinforcing bar hanging means , and sequentially adds the horizontal bars and the vertical bars. Since it is characterized by assembling a reinforcing bar having a required length, the effect of the reinforcing bar assembling apparatus using the vertical shaft is exhibited as a vertical construction method.

The vertical pile construction method of the present invention is a construction method of excavating a deep vertical hole with a small diameter and constructing a vertical pile while lowering the earth retaining body sequentially, and excavating the vertical hole with a vertical hole excavator,
In the vertical shaft formed in this way, a step of installing a reinforcing bar of a required length by a reinforcing bar assembly method using the vertical shaft of the present invention,
It is characterized by comprising the step of placing a vertical pile by directly placing concrete in a vertical hole without a debris body while sequentially raising the debris bodies while leaving the reinforcing bar cradle at the bottom of the well The effect of the rebar assembly method using a vertical shaft is also demonstrated in the vertical pile construction method.

The effects of the reinforcing bar assembling apparatus and the reinforcing bar assembling method using the vertical shaft of the present invention are as described in the above solution means.

The vertical pile construction method of the present invention uses a vertical shaft excavation method using a debris body to excavate a vertical shaft, then assembles reinforcing bars in the vertical shaft using the rebar assembly method, and finally lifts the debris body However, since the concrete was directly placed on the vertical hole wall part without a debris and the vertical pile was constructed, the effects of each method were demonstrated synergistically. In particular, it is recognized that the circumferential friction of the constructed vertical piles is remarkably improved.

BRIEF DESCRIPTION OF THE DRAWINGS The outline | summary of an example of the reinforcing bar assembly apparatus using the vertical shaft of this invention and the reinforcing bar assembly method using the vertical shaft using the apparatus is shown, (a) is a notional vertical sectional view of the intermediate process, (b) ) Is an AA cross-sectional view of (a), and (c) is a BB cross-sectional view of (a). FIG. 1 is a conceptual cross-sectional view showing a first stage state of the reinforcing bar assembling apparatus and method of FIG. 1A and 1B illustrate a method for suspending vertical bars in the reinforcing bar assembling apparatus and method of FIG. 1, in which FIG. 1A is a diagram showing a state just before the vertical bars are lifted, and FIG. (C) is a bottom view of (b), (d) is a perspective view of (b). 3A and 3B will be described with respect to the horizontal stripes assembled to the vertical stripes in FIG. 3, wherein FIG. 3A is a top view of the horizontal stripes as viewed from above, FIG. 3B is a side view of FIG. 3A, and FIG. Explanatory drawing of the procedure for assembling the horizontal streak in the vertical state to the vertical strea The procedure for assembling the same one lot (one stage) of vertical bars in multiple times is shown. (A) shows the state immediately before adding the vertical bars to the post-assembly reinforcing bars assembled by the method of FIG. Conceptual longitudinal sectional view, (b) is a conceptual longitudinal sectional view showing a state in which insertion of additional longitudinal stripes is completed (A) is a conceptual longitudinal sectional view showing a state in which the rebar assembly procedure described in FIGS. 1 to 5 is repeated a plurality of times to complete the rebar assembly of a required length, and (b) is from the state of (a). A conceptual longitudinal section showing the rack-type gantry suspension material removed The conceptual longitudinal section which shows the state which has put concrete while pulling up the earth retaining body in the state where the reinforcing bar after assembling with the reinforcing bar assembly apparatus and method described above is in the vertical shaft 7 is a conceptual vertical cross-sectional view showing a vertical pile in a state in which the vertical pile construction method has been completed and the vertical pile construction method has been completed. (A)-(d) is a conceptual explanatory drawing explaining the procedure which assembles the rebar of a vertical bar double winding with the reinforcing bar assembly apparatus and method of FIG. 1 is a plan view of an example of a shaft excavating device of the present invention for excavating a shaft using the reinforcing bar assembling apparatus and method of FIG. Front view of the vertical hole drilling device of FIG. External appearance perspective view which shows the double-ended bucket provided with the rock formation part contained in the vertical hole excavation apparatus of FIG. FIG. 11 shows a crusher with a receiving lid included in the vertical hole excavator of FIG. 10, (a) is a front view thereof, (b) is a side view thereof, and (c) is both equipped with the rock formation portion of FIG. 1. External perspective view showing a state in which the excavated stone is put into the receiving cover of the crusher with receiving cover of (a), (b) from the mouth bucket (A), (b), (c) is an external perspective view showing a process in which the debris received from the receiving lid in FIG. 10 is a conceptual longitudinal sectional view showing a state in which the bottom of the vertical hole is excavated by the vertical hole excavating device of FIG. 10 and the crushed debris is sequentially sucked and discharged to the ground. 1 is a conceptual longitudinal sectional view showing an example of a vertical hole excavation system equipped with a vertical hole excavation unit of the present invention for excavating a vertical shaft using the reinforcing bar assembling apparatus and method of FIG. It shows an example of a reinforcing bar suspending means forming the core of a reinforcing bar assembling apparatus using a vertical shaft of the present invention, (a) is a conceptual longitudinal sectional view, (b) is a CC sectional view of (a). The other example of the reinforcing bar suspension means which forms the core of the reinforcing bar assembling apparatus using the vertical shaft of the present invention is shown, (a) is a conceptual longitudinal sectional view, (b) is an enlarged main part of (a). Figure, (c) is a DD sectional view of (b) The other example of the reinforcing bar hanging means which forms the core of the reinforcing bar assembling apparatus using the vertical shaft of the present invention is shown, (a) is a conceptual longitudinal sectional view, (b) is an EE sectional view of (a). The other example of the earth retaining body used with the vertical pile construction method of this invention is shown, (a) is the top view of the assembly state, (b) is FF sectional drawing of (a), (c) is (a). (D) is a front view of (c), (e) is an enlarged cross-sectional view showing a vertical connection mode of the earth retaining body of (a), and (f) is a connection of (a). Front view of member, (g) is bottom view of (f) The longitudinal cross-sectional view which shows an example of the earth retaining assembly used with the vertical pile construction method of this invention 21A is an enlarged cross-sectional view of a main part of a connecting portion between liner plates of the earth retaining assembly of FIG. 21, FIG. 21B is a side view of FIG. 21, and FIG. 21C is an upper and lower connecting portion of the earth retaining assembly of FIG. The principal part expanded sectional view, (d) is a side view of (c) FIG. 22 shows a liner plate constituting the earth retaining assembly of FIG. 21, wherein (a) is an external perspective view thereof, (b) is a side view of (a), and (c) is a top view of (a). FIG. 22 shows other parts constituting the earth retaining assembly of FIG. 21, (a) is an external perspective view of the connecting male member, (b) is an external perspective view of the connecting female member, and (c) is the reinforcing member. External perspective view FIG. 1 shows an outline of another example of a reinforcing bar assembling apparatus using a vertical shaft according to the present invention and a reinforcing bar assembling method using a vertical shaft using the apparatus, (a) is a conceptual vertical cross-sectional view showing the overall configuration, (B) is a top view of the reinforcing bar cradle, (c) is an external perspective view of the main part of the reinforcing bar cradle of (b). FIG. 26 schematically shows a main part of the reinforcing bar suspending means included in the reinforcing bar assembling apparatus and method of FIG. 25, and (a) schematically shows the reinforcing bar suspending means, and (b) and (c). Is a front view of the main part of the vertical bar supporting means, (d) is a front view of the supporting vertical bar connecting means, and (e) is a bottom view of (d). FIG. 26 is a schematic diagram showing a horizontal rebar basket included in the reinforcing bar assembling apparatus and method of FIG. 25, where (a) is an overall front view, (b) is a top view of (a), and (c) is an essential part of (a). Sectional section The front of the state which shows the procedure of the reinforcing bar assembly method using the reinforcing bar assembly apparatus of FIGS. 25-27, and has attached the reinforcing bar cradle and the predetermined number of horizontal bars in a state where the supporting vertical bar is hung with a crane. Figure Conceptual longitudinal sectional view showing a longitudinal bar adding process of the reinforcing bar assembly method using the reinforcing bar assembling apparatus of FIGS. FIGS. 25A to 27B show a horizontal bar adding process of the reinforcing bar assembling method using the reinforcing bar assembling apparatus shown in FIGS. 25 to 27, and FIGS. (A), (b) is a conceptual longitudinal cross-sectional view which shows the post-transverse post addition process of the reinforcing bar assembly method using the reinforcing bar assembly apparatus of FIGS. 25 to 27, and (c) shows a state where the reinforcing bar assembly is completed. Longitudinal section (A) is the principal part longitudinal cross-sectional view which shows the other example of the vertical hole excavation apparatus used with the vertical pile construction method using the rebar assembly method of this invention, (b) is the schematic which shows a commercially available electric backhoe The principal part longitudinal cross-sectional view which shows the other example of the vertical hole excavation apparatus in the vertical pile construction method using the reinforcing bar assembly method of this invention The conceptual longitudinal cross-sectional view which shows the reinforcing bar assembly method of the background art of this invention

1 Body
2 pedestal part 2a pedestal roller 3 guide rail 4 moving base 5 3 joint arm 6 double-ended bucket 6a hydraulic cylinder 7 shale section 7a shale rod 8 crusher with receiving cover 8a receiving cover 9 conveyor 10 powerful suction cylinder 11 hydraulic pump 12 hydraulic tank 15 earth retaining body 15T vertical shaft 16 earth retaining assembly 16f backing reinforcing plate material 16g connecting plate 17 connecting male member 18 connecting female member 19 reinforcing member 20 vertical hole drilling device 30 fixed base hole 31 vertical muscle 31A supporting vertical muscle 32 horizontal muscle (Hoop muscle)
35 Reinforcing bars 41 to 41C after assembling Hanging lifting / lowering means (rack type suspension material)
41D Reinforcing bar suspension means 41L Fixed vertical bar support means 41U Elevating vertical bar support means 47-47D Reinforcement base 44 Elevating hydraulic cylinder (elevating means)
42, 43 Guide ring 42A Fixed guide ring
43A Lifting guide ring 45 Rack hanging hook 46 Temporary holding stopper 46A Longitudinal support means 46B Movable auxiliary tools 48, 48A Reinforcing bar assembly stage 49 Horizontal bar stacking guide 49A Horizontal bar cage 50 Rebar receiving rod 51 Vertical shaft working space 55-55B Reinforcing bar Hanging means
60, 60A Rebar assembly equipment BB Earthstone SB before crushing Earthstone EB after crushing Ground EA Expanded bottom hole VH Vertical hole

Embodiments of the present invention will be described below with reference to the drawings.
<Embodiment 1>
FIG. 1: shows the outline | summary of an example of the reinforcing bar assembly apparatus using the vertical shaft of this invention, and the reinforcing bar assembly method using the vertical shaft using the apparatus, (a) is a notional longitudinal section of the intermediate process FIG. 4B is a cross-sectional view taken along line AA in FIG. 4A, and FIG. 4C is a cross-sectional view taken along line BB in FIG.

<Components of rebar assembly device 60>
The components of the reinforcing bar assembly device 60 using the shaft according to the present invention will be described in order with reference to FIG. The earth retaining body 15 continuously forms a vertical shaft, which is a vertical shaft 15T as shown in FIG. The bottom portion of the vertical shaft 15T is an expanded bottom portion EA, and the outside of the vertical shaft 15T is surrounded by the ground E.

Rack type suspension material 41: A rectangular bar having a rack on the outer surface, which can be extended by adding an appropriate unit length (for example, 1 m to 3 m) up and down. At least four places are provided so as to equally divide the outer circumference so as to surround the outer circumference of the vertical bars 31 embedded in the vertical shaft (one in which the earth retaining bodies 15 are continuous). In addition, the shape of the rod body of the rack type suspending material is not limited to a rectangle, and may be a circular shape.

Guide ring 42 for suspension material: This guide guides the rack type suspension material 41 at the upper part of the vertical hole, has an annular ring shape, and the vertical state of the rack type suspension material 41 and the outer periphery. In order to maintain the equally divided state, it is preferable to provide a guide portion that is sandwiched or enclosed so as not to restrain the vertical movement of the rack-type gantry suspension member 41.

Rack lifting guide ring 43: It is provided below the suspension material guide ring 42, has the same shape as the guide ring 42, and functions similarly.

Elevating hydraulic cylinder 44: Here, the separating / connecting mechanism 13 composed of a double-acting hydraulic jack used in Patent Document 2 is used, but with a check valve that can fix the position of the rod tip at an arbitrary position. It is a hydraulic cylinder. The cylinder 44 was used for raising and lowering (separating and connecting) the earth retaining body 15 during excavation of the vertical shaft. After the excavation of the vertical shaft was completed, the installation position was moved as it was, and the rack type frame was installed. Used to raise and lower the suspension material 41.

Rack hanging hook 45: A hook provided at the tip of the lifting hydraulic cylinder 44 and operable in a meshed state and a non-engaged state with the rack portion of the rack type suspension material 41. The operation mode is not limited.

Temporary holding stopper 46: in a non-engagement state with the rack-type gantry suspension member 41 by the rack suspending hook 45, from before the engagement of the rack-type gantry suspension member 41 with the hook 45 to after the engagement state, the rack type The gantry suspension material 41 is held so as not to fall, and its operation mode and configuration are not limited as long as it exhibits its function.

Reinforcing bar pedestal 47: a disc-like body that is detachably attached to the bottom end of the rack-type gantry suspension member 41 by a bolt fastening means or the like, or a ring-shaped body that has only a portion that supports the vertical bars, and is assembled. Reinforcing bars are received below. Further, after the assembly of the reinforcing bars is completed, it is cut off from the rack type suspension material 41 and left on the bottom of the vertical shaft and buried.

If a positioning hole having a taper opening is provided in the bottom concrete and a taper projection corresponding to the positioning hole is provided on the lower surface of the reinforcing bar receiving base 47 so that the both fit each other, the reinforcing bar receiving bar Positioning when 50 is brought into contact with the bottom concrete at the bottom of the vertical shaft can be accurately performed.

Reinforcing bar assembly stage 48: is installed above the suspension material guide ring 42, and a working space for accumulating a necessary number of horizontal bars (hoop bars) 32 in advance or attaching the horizontal bars 32 to the vertical bars 31. Or used as Reference numerals 24 and 25 will be described later. Reference numeral 26 denotes a stage support member made of H-shaped steel or the like that supports the stage 48 and also serves as a vertical structure on which the lifting hydraulic cylinder 44 is installed.

Horizontal bar stacking guide 49 (see FIG. 4): installed on the reinforcing bar assembly stage 48 and the like, and when the horizontal bar 32 is stacked at least at three or more positions that equally divide the outer circumference, the stacked state is maintained. It is a guide to do so. The horizontal line stacking guide 49 is upright in a vertical state, and a required number of retaining pin holes 49b are provided in the vertical direction. At least one guide 49 is provided so that a retaining pin 49a with a sharp tip can be inserted into and removed from the retaining pin hole 49b. In contrast, two or more are prepared. How to use the guide 49 will be described with reference to FIG.

Reinforcing bar receptacle 50: A rack-type gantry suspension member 41 and a reinforcing bar receptacle 47 installed at the lowermost end thereof are combined.

Vertical shaft working space 51 (see FIG. 2): A flat portion at the upper end of a vertical shaft (consisting of a plurality of earth retaining bodies 15 stacked one above the other), and inside the fixed foundation hole 30 used for vertical shaft excavation described later It means a work space formed in a part and formed in a part below the above-described reinforcing bar assembling stage 48. In this vertical shaft working space 51, horizontal bars may be stacked and attached to the vertical bars.

<Outline of rebar assembly method using vertical shaft using rebar assembly device 60>
The outline of the rebar assembling method using the vertical shaft is as follows. The rebar assembly stage 48 or the vertical rebar assembly is received while the rebar (31, 32) to be assembled is received by the rebar receiving rod 50 of the rebar assembling apparatus 60 so as to be vertically movable. The horizontal bar 32 is sequentially attached to the vertical bar 31 in the downhole work space 51, and the vertical bar 31 and the vertical bar 31 (generally, one length is 7 m) are vertically stacked and fastened. It repeats until the full length after the connection of 31 becomes the length suitable for the shaft.

Moreover, in this construction method, as will be described below, the vertical bars 31 do not need to be suspended by a crane for all the numbers required for one lot (one stage) at a time. An assembly of the horizontal bars 32 can be received and placed by the reinforcing bar receiving bar 50.

Therefore, in this construction method, only the number that can be suspended by the crane of this small rated suspension load is suspended and deposited in the reinforcing bar receiving rod 50, and the remaining longitudinal bars 31 are suspended by the number that can be suspended. By repeating the insertion between the vertical bars 31, it is possible to achieve the effect that the vertical bars 31 necessary for one step can be inserted with a small crane. Hereinafter, this reinforcing bar assembly method will be described in more detail with reference to FIGS.

FIG. 1 shows a structure in which an assembly of a vertical bar 31 and a horizontal bar 32 is connected up to two levels, and the first vertical bar of the third level is connected to an existing assembled bar (31 + 32) from above. It shows where you are going. At this time, the number of vertical bars 31 that can be suspended by a small crane hook CF, which is smaller than the total number of the vertical bars 31 of the already-assembled reinforcing bars (31 + 32), are suspended from the vertical bar suspension ring 33. Yes. From here, it demonstrates in order from the procedure which hangs and assembles the first (lowermost) vertical stripe 31 until it reaches the state of FIG.

FIG. 2 is a conceptual cross-sectional view showing a state of a first stage of the reinforcing bar assembling apparatus and method of FIG. The portions already described above are denoted by the same reference numerals and redundant description is omitted. FIG. 2 shows a state in which the reinforcing bar receiving rod 50 is located at the uppermost portion of the vertical shaft 15T (the vertical shaft formed by the laminated structure of the earth retaining bodies 15). The temporary holding stopper 46 is engaged with the lowermost rack portion of the rack-type gantry suspension member 41 of the reinforcing bar receiver 50.

Above, the rack hanging hook 45 of the lifting hydraulic cylinder 44 is similarly engaged with the upper rack portion of the rack-type gantry suspension member 41, and the current position of the reinforcing bar receiving rod 50 is securely held at the upper and lower positions. doing. In the reinforcing bar assembling stage 48, the horizontal bars 32 are stacked in the number necessary for the vertical bars 31 of one lot (one stage).

3A and 3B illustrate a method for suspending vertical bars in the reinforcing bar assembling apparatus and method shown in FIG. 1. FIG. 3A is a diagram showing a state just before the vertical bars are lifted, and FIG. The front view which shows a state, (c) is a bottom view of (b), (d) is a perspective view of (b).

First, as shown in FIG. 3 (a), the vertical bars 31 are connected to the vertical bar suspension ring 33 and the vertical bars 31 laid on the ground as many as can be suspended by a crane in the field. lift. At this time, since the vertical bars 31 are not yet assembled with the horizontal bars 32, they are separated and are not difficult to lift, and are simply in the states (b) to (d).

At this time, if the vertical bar suspension ring 33 and the vertical bar 31 are connected by a one-touch detachable connecting means having a fall prevention function, as will be described later with reference to FIG. It is easy to place the reinforcing bars (31 + 32) thus placed on the reinforcing bar support 47 of the reinforcing bar receiving rod 50 and to release the connection with the vertical bar hanging ring 33.

4A and 4B illustrate the horizontal stripes assembled to the vertical stripes in FIG. 3, wherein FIG. 4A is a top view of the horizontal stripes as viewed from above, FIG. 4B is a side view of FIG. FIG. 8B is an explanatory diagram of a procedure for assembling the horizontal stripes in the state of (b) to the vertical stripes.

As shown in FIG. 4 (a), the horizontal bars 32 are formed of a deformed steel bar having the same external shape as that of the vertical bars 31 in a ring shape so that upper and lower overlapping parts 32b can be formed, and a hook part 32a is provided at each end. It has become. In order to pile up this so that it may not fall down, as shown in FIG.4 (b), it is good to pile up so that the upper and lower overlapping part 32b may become the position which opposed alternately.

In the present invention, in order to prevent the stacked horizontal bars 32 from falling down and to separate the stacked horizontal bars 32 downward one by one, a necessary number of retaining pin holes 49b corresponding to the stacked horizontal bars 32 are provided. A horizontal line stacking guide 49 is provided, and a retaining pin 49a that is inserted into and withdrawn from the retaining pin hole 49b.

A pair of retaining pins 49a is below the bottom of the stacked horizontal bars 32, and the horizontal bars 32 are supported by a pair of retaining pins 49a on another stage. The retaining pin 49a that is supported is pulled out, the lower horizontal stripe 32 is separated downward, and is assembled to the suspended vertical stripe 31 as shown in FIG. 4C (connected by a binding line).

Next, as shown in the drawing, the removed retaining pin 49a is inserted into a retaining pin hole 49b at a position for supporting the transverse streak 32 above the transverse streak 32 that is currently at the lowest level, and the transverse streak 32 is supported. Thereafter, the vertical bar 31 is lowered by one step of the horizontal bar 32 by the crane hook CF, the retaining pin 49a supporting the lower horizontal bar 32 is pulled out, and the horizontal bar 32 is moved to a position next to the vertical bar 31. Assemble.

When seven to ten transverse bars 32 are attached by repeating this procedure, the vertical stripe 31 and the horizontal stripe 32 can be maintained in the upright state. The connection with the vertical bar suspension ring 33 is released so as to be placed on the reinforcing bar receiving base 47 of the reinforcing bar receiving rod 50, and the crane hook CF is moved to the next working position.

In this state, the upper horizontal bar 32 of the reinforcing bars (longitudinal bars 31 + horizontal bars 32) placed on the reinforcing bar receiving bar 50 is positioned on the reinforcing bar assembly stage 48 so that the next horizontal bar 32 can be attached. Therefore, after this, the remaining horizontal bars 32 are assembled from the top of the reinforcing bar 31 from the top on the reinforcing bar assembling stage 48 while maintaining the position of the reinforcing bar receiving rod 50, and are repeatedly assembled in order. If it continues until it reaches the horizontal line 32, the attachment of the horizontal line to the full length of the vertical line 31 will be completed.

Instead of the above operation on the reinforcing bar assembly stage 48, the rack hanging hook 45 is lowered by the elevating hydraulic cylinder 44 and temporarily held by the temporary holding stopper 46, and the horizontal bar 32 is moved to the upper end of the vertical bar 31 again. It may be assembled. In this case, it is preferable that the reinforcing bar receiving rod 50 is raised to the initial state shown in FIG.

FIG. 5 shows a procedure for assembling the same one lot (one stage) of vertical bars in multiple times, and (a) shows a state immediately before adding the vertical bars to the reinforcing bars assembled by the method of FIG. The conceptual longitudinal cross-sectional view which shows the state of (2), (b) is a conceptual longitudinal cross-sectional view which shows the state which insertion of the additional vertical streak was completed.

When the assembly described in FIG. 4 is completed, the state shown in FIG. In this state, the horizontal stripes 32 are assembled to the entire vertical stripes 31, but the number of vertical stripes 31 has not yet reached the required number.

Therefore, as shown in FIG. 5A, when the next short vertical bar 31 is suspended and inserted so as to be between the existing vertical bars 31 and placed on the reinforcing bar receiving rod 50, FIG. It will be in the state of b). Therefore, the horizontal bars 32 are assembled up to the upper end of the added vertical bars 31 by using the reinforcing bar assembly stage 48 and the vertical shaft working space 51. This is repeated until the number of vertical stripes 31 reaches the required number. At this time, the horizontal stripes 32 are already assembled over the entire length of the vertical stripes 31 for one stage, so there is no need to add them.

FIG. 1 (a) shows the midway stage following this, and FIG. 1 (a) shows that the next vertical bar 31 is from the top of the two-stage reinforcing bar (vertical bar 31 + horizontal bar 32) that has already been assembled. The state of being suspended and being inserted is shown. As a result, the suspended vertical bars 31 and the lower vertical bars 31 at the corresponding positions are connected so as to overlap each other, and the horizontal bars 32 are assembled to the new vertical bars 31 as described above. It is done. The subsequent procedures are assembling the horizontal bars, adding the vertical bars, finishing adding the vertical bars for one stage, and assembling the next stage, and assembling the reinforcing bars (vertical bars 31 + horizontal bars 32) to the required length. .

FIG. 6A is a conceptual longitudinal sectional view showing a state in which the rebar assembly procedure described in FIGS. 1 to 5 is repeated a plurality of times and a rebar assembly of a required length is completed, and FIG. It is a notional longitudinal section which shows the state where the rack type suspension material was removed from the state. That is, after the state shown in FIG. 6 (a) is reached, the rack-type gantry suspension member 41 is removed by releasing the mounting state of the rack-type gantry suspension member 41 and the reinforcing bar receiving base 47, and FIG. ) State.

Thereafter, other parts of the reinforcing bar assembly device 60 using another vertical shaft including the stage support member 26, such as the reinforcing bar assembly stage 48, are removed, and the lifting hydraulic cylinder 44 is used for lifting the retaining body 15. If it is returned to the original state so as to be able to be used as the separating / connecting mechanism 22, the state shown in FIG. 7 is obtained. In addition, the method demonstrated so far is the reinforcing bar assembly method using the vertical shaft of the present invention using the reinforcing bar assembly apparatus 60.

As will be understood from the above description, according to the reinforcing bar assembly apparatus using the vertical shaft and the reinforcing bar assembly method using the vertical shaft according to the present invention, a large crane is not required for hanging the vertical bars, and It is possible to exhibit an effect that it is possible to assemble a reinforcing bar having a necessary length even in a narrow mountainous area without taking up an extra space for assembling with the horizontal bars. Moreover, the effect that an operator does not need to enter a vertical shaft to assemble a reinforcing bar can be exhibited.

FIG. 7 is a conceptual longitudinal cross-sectional view showing a state in which concrete is placed while pulling up the earth retaining member in a state where the rebars assembled by the rebar assembling apparatus and method described above are in the vertical shaft, FIG. FIG. 8 is a conceptual vertical cross-sectional view showing a vertical pile in a state where the placement is finished by the vertical pile construction method described in FIG. 7 and the vertical pile construction method is completed.

Here, the fixed base hole 30 will be described in more detail. The fixed foundation hole 30 is the basis of the vertical pile construction method of the present invention, and the structure thereof is a predetermined depth (for example, 1 meter) for the foundation hole 30 on the ground E inclined between the mountains, and a predetermined inner diameter. A base lower hole (for example, 3.5 meters) is excavated, and a base 21 having an H-shaped steel ring at the hole bottom and a corrugated cylindrical liner plate 24 thereon are installed.

The base 21 and the liner plate 24 are firmly fixed so as not to be spaced apart from each other, and then concrete 25 is placed between the base 21 and the liner plate 24 and the foundation lower hole to be solidified. Thereafter, the base side of the separation / contact mechanism 22 composed of a double-acting hydraulic jack or the like is fixed to the base 21, and the earth retaining ring is detachably attached to the distal end side (vertical movement side) of the separation / contact mechanism 22 via a fixing ring 23. The body 15 is fixed.

7 and FIG. 8 show a part of the procedure described in Patent Document 2, and using the reaction force of the fixed base hole 30, the earth retaining body 15 is sequentially pulled up by the separation / connection mechanism 22. When the earth retaining body 15 comes out while being collected and concrete CC is placed directly on the exposed vertical hole wall of the ground E, the construction of the small-diameter vertical pile 36 is completed as shown in FIG.

FIGS. 9A to 9D are conceptual explanatory views for explaining a procedure for assembling a double-bar longitudinal reinforcing bar with the reinforcing bar assembling apparatus and method of FIG. When double vertical bars 31s and 31t as shown in FIG. 9 (a) are required, first, as shown in FIG. 9 (b) and FIG. When the inner horizontal bars 32s are sequentially assembled to 31s, and then the outer horizontal bars 32t are sequentially assembled to the outer reinforcing bars 31t, the vertical shaft is used while using a small crane as in the case of FIGS. It is possible to assemble a double rebar without requiring a large space around

The core of the technical idea of the rebar assembly apparatus using the vertical shaft of the present invention does not necessarily include all the components already described. The horizontal bars to be assembled do not depend on the crane, and the suspension means for hanging is provided, and the rack type suspension material of the suspension means can be removed and reused after the assembly of the reinforcing bars is completed. It is in the point made. As a result, the rebar assembly can be performed in the work space on the vertical shaft and the rebar assembly stage as described above, and the work in the vertical shaft becomes unnecessary. Moreover, the suspension load of the crane which suspends a reinforcing bar can be made small, and the operation | work with a small crane is attained. Moreover, the effect that an operator does not need to enter a vertical shaft to assemble a reinforcing bar can be exhibited.

Examples of such suspending means include, in addition to the above-described rack-type gantry suspending material, a combination of wires and winches (which can be rolled up and down equally), a combination of a chain and a chain block, Combination of an add-on ball screw and this ball screw lifting device, a rack and a gear that can be rotationally positioned (with a drive source), or a worm and an addable worm wheel that has an infinite radius and a straight line (with a drive source), etc. It may be.

In addition, the upper and lower connections between earth retaining bodies have been done with bolts and nuts until now, but it is necessary to tighten and loosen at least 8 places, and it takes time and labor to connect and release the connection. . Instead, the upper and lower earth retaining bodies are connected by providing a fitting portion that fits the lower part of the upper earth retaining body and the upper part of the lower earth retaining body in the circumferential direction of the flange portion of the earth retaining body. Good. In this case, the upper and lower earth retaining bodies can be connected and disconnected by the above-mentioned fitting, so that time and labor can be saved greatly.

From this, the usage method of the vertical hole excavation apparatus of patent document 5 is demonstrated using FIGS. The use of a vertical shaft excavated using this vertical shaft excavator is the basic of the reinforcing bar assembly device using the vertical shaft and the reinforcing bar assembly method using the vertical shaft, but the reinforcing bar assembly device of the present invention. The assembly method can also be applied to vertical shafts excavated by other vertical hole drilling devices.

FIG. 10 is a plan view showing an example of the vertical hole excavator of the present invention, and FIG. 11 is a front view of the vertical hole excavator of FIG.

This vertical hole excavating device 20 excavates a deep vertical hole with a small diameter, and can be detachably attached at least to the inside of the earth retaining body 15 by a mounting portion 1d. Only 20 can be taken out on the ground, and there are a plurality of upper circular frames 1a that are upper with respect to the excavating direction, lower circular frames 1b that are lower (see FIG. 11), and a plurality of connecting the upper circular frame 1a and the lower circular frame 1b. The main body 1 is composed of a vertical frame 1c (see FIG. 11).

As can be seen from FIG. 11, the main body 1 is composed of an upper circular frame 1a and a lower circular frame 1b obtained by plastic processing of an H-shaped steel, which is a heavy steel, so as to form a circle, and similarly, an H-shaped steel that connects these upper and lower frames. It is composed of a vertical frame 1c using, for example, and has a considerable weight and becomes an exoskeleton of the vertical hole excavator 20, and a wire is wound around the upper circular frame 1a and taken out to the ground by a crane. It is something that can be done.

The vertical hole excavator 20 is also provided with a pedestal portion 2 that is sandwiched between upper and lower pedestal rollers 2a with respect to the lower circular frame 1B of the main body 1 so as to be capable of 360-degree hydraulic rotation drive without vibration, and the pedestal portion. 2 and a pair of left and right guide rails 3 that form a space that reaches the vicinity of the outer periphery of the pedestal 2 and the upper and lower rollers (not visible in the drawing) on the guide rails 3 are hydraulically driven. And a moving table 4 that moves.

The vertical hole excavator 20 is also provided to be openable and closable by a hydraulically-operated three-joint arm 5 provided on the movable table 4 and a single hydraulic cylinder (see FIG. 11) at the tip of the three-joint arm 5. The double-headed bucket 6 and the double-headed bucket 6 are housed with a rock rock rod 7a that rocks the bedrock by shaking with a pressing force from the earth retaining body 15 of the vertical hole excavator 20 as a main reaction force. And a hydraulically driven rock formation portion 7 provided as described above.

Further, the vertical hole excavating device 20 is configured such that the rock rock rod 7a reaches the lower ground together with the double-headed bucket 6 between the guide rails 3, and the double-headed bucket 6 And a receiving lid 8a that is hydraulically opened and closed to receive the debris of the bucket 6 on the guide rail 3, and a crusher 8 with a hydraulically driven receiving lid provided on the base 2 side. ing.

The vertical hole excavator 20 further supplies the earth and stone received by the receiving lid 8a to the crusher 8 when the receiving lid 8a closes the opening side of the crusher 8, and crushes it into smaller debris. A conveyor 9 for moving the smaller crushed debris from below the crusher 8 to a position where a strong suction cylinder 10 provided adjacent to the pedestal 2 is provided, and a plurality of hydraulic pumps 11 for driving the hydraulic drive device. And a hydraulic tank 12 for storing hydraulic fluid.

The vertical hole excavation device 20 has the above-described configuration, the double-ended bucket 6 provided with the rock formation portion 7, the rotating pedestal portion 2, the moving base 4, the crusher 8 with a receiving lid, the conveyor 9, While the excavated debris is discharged to the ground by the powerful suction cylinders 10 and the like, the vertical diameter is the same as the outer diameter of the earth retaining body 15 (actually a larger inner diameter that allows the earth retaining body 15 to easily fit). A feature is that a hole VH or a wider bottom VE (see FIG. 15) wider than that can be excavated.

This vertical hole drilling device 20 uses a double-ended bucket 6 with a rock rock rod 7a in it, and reacts the weight of the entire device (current 1.5 meter outer diameter of about 1.5 tons) as a reaction force. In order to withstand the above, the pressing force from the earth retaining body 15 is further strengthened, and is used by being attached to the lowermost earth retaining body 15 of the method of constructing the earth retaining body of Patent Document 1, and after excavation is completed, It will be taken out.

In addition, since almost all devices are hydraulically driven, they can be operated by remote control from the ground if an appropriate monitor is installed. In particular, the transfer of debris from the double-ended bucket 6 provided with the rock formation part 7 to the crusher 8 with a receiving lid has already been automated, and the crushing machine 8 with a receiving lid is transferred to the strong suction cylinder 10 by the conveyor 9. The movement of the crushed debris and the suction and discharge of the crushed debris to the ground by the powerful suction cylinder 10 are performed continuously.

Therefore, according to the vertical hole excavating device 20, it is possible to excavate a small and deep vertical hole by operating from the ground while using the pressing force from the earth retaining body, and it is not necessary for an operator to enter the hole bottom. Safety and burden can be reduced.

As shown in FIG. 11, the three-joint arm 5 attached to the movable base 4 is composed of a base arm 5a and a tip arm 5b, each tilted by a hydraulic cylinder and attached to the tip of the tip arm 5b. The bucket 6 can also be tilted as a whole by a hydraulic cylinder, and can be opened and closed by a separate open / close hydraulic cylinder 6a.

Therefore, according to the double-joint bucket 6 that incorporates the three-joint arm 5 attached to the moving base 4 that moves the guide rail 3 of the rotating pedestal 2 and the tip rock rod 7a, a solid line in the figure. As shown in Fig. 2, the drilling can be carried out to a diameter larger than the earth retaining body 15, so that a so-called bottom expansion portion can be formed, and excavation and excavation were performed as indicated by the phantom line in the figure. It can also be put in the receiving lid 8a of the crusher 8 with a receiving stone.

FIG. 12 is an external perspective view showing a double-ended bucket provided with a rock formation part included in the vertical hole excavator of FIG. 10. As described above, the double-ended bucket 6 includes the rock formation portion 7 inside, and the rock formation rod 7a at the tip thereof is visible inside the double-ended bucket 6.

The double-ended bucket 6 with the built-in rock rock rod 7a can immediately hold the rocks and rocks that have been rock-rock after the rock is rocked. It is possible to speed up excavation work, and the device becomes compact.

Further, the double-ended bucket 6 is configured such that the tip of a single hydraulic cylinder 6a is rotatably connected to the link fulcrums 6e of the three links 6c and 6d and the foundation link 6b. Buckets 6c and 6d can be opened and closed simultaneously.

FIGS. 13A and 13B show a crusher with a receiving lid included in the vertical hole excavator of FIG. 10, wherein FIG. 13A is a front view thereof, and FIG. 13B is a side view thereof. According to this figure, the crusher 8 with a receiving lid is opened and closed by a hydraulic cylinder 8b at a position where the receiving lid 8a is opened widely on the guide rail 3 side as shown by an imaginary line of a two-dot chain line and a closed position shown by a solid line. It is free. The main body 8c of the crusher 8 has the same configuration and action as those described in Patent Document 4, but will be described later with reference to FIG.

FIG. 13C is an external perspective view showing a state in which the excavated stone is put into the receiving lid of the crusher with receiving lid of FIG. 12 from the double-ended bucket having the rock formation portion of FIG. The receiving lid 8a of the crusher 8 with a receiving lid opens so as to be substantially horizontal on the guide rail 3 side, and the two-sided bucket 6 is opened on the upper side, and a large debris BB after excavation is formed. It has been thrown.

When deployed on such a guide rail 3 and closed, the large earth and stone BB placed on the receiving lid 8a is put into the main body 8c of the crusher 8, and the space of the apparatus is effectively used. Improve usage efficiency.

14 (a), 14 (b), and 14 (c) are external perspective views showing a process in which the debris received from the receiving lid in FIG. 13 is crushed from a large debris to a small debris at the crusher portion. The main body portion 8c of the crusher 8 has the same configuration as that described in Patent Document 4, and a substantially vertical rear plate 8e is hydraulically provided to the front plate 8d having crush projections 8f and a slope. By slowly moving up and down with a cylinder, a large earth and stone BB (10 cm square size) is gradually crushed to a small size and discharged from the same position at the lower end as a small earth and stone SB without generating a loud sound. Here, the discharged earth and stone SB is transported to a place where the strong suction cylinder 10 is located by the conveyor 9 and sequentially sucked and discharged to the ground. This makes it possible to suck and discharge smaller crushed debris, improving the ease of suction.

FIG. 15 is a diagram showing a state in which the bottom of the vertical hole is excavated by the vertical hole excavating apparatus of FIG. 10 and the crushed debris is sequentially sucked and discharged to the ground. This vertical hole excavating device 20 is attached to the lowermost part of the same debris body 15 as the debris body used in the debris body installation recovery-type foundation vertical pile construction system of Patent Document 2.

Thus, the vertical hole excavation device 20 of the present invention exhibits its role most effectively when used in combination with the earth retaining body installation recovery type vertical vertical pile construction system. Further, when the strong suction tube is clogged, the clogging can be removed immediately using the clogging removing device described in Patent Document 3.

<Embodiment 2>
The vertical hole excavation method shown in FIG. 16 uses the vertical hole excavation unit 74 described in Japanese Patent No. 4022570 acquired by the applicant of the present application instead of the vertical hole excavation apparatus 20 described with reference to FIGS. is there.

Although not shown in detail, the vertical hole excavation unit 74 includes a rock formation unit that rocks the bedrock with a vibrating rock rod, a cylindrical excavation unit that is driven to rotate around the rock formation unit, A main body base in which the excavation part is installed around a rock formation part, a crushing part provided between the main body base and the excavation part, a rock that is dredged in the rock formation part, excavated in the excavation part, and in the crushing part. And a debris suction means for sucking and discharging debris in the excavated part.

In addition, the crushing portion comprises a set of two backward crushing tips provided from the back surface of the crosspiece toward the rear, and a forward crushing tip provided from the main body base toward the front, The backward crushing tip and the forward crushing tip have portions that overlap each other in the direction of the rotation axis of the excavation part, and when the backward crushing tip rotates, It is comprised so that it may pass between the said set of said backward crushing tips,

The excavation method using the vertical hole excavation unit 74 includes a hydraulic construction machine 72 installed on the ground, the vertical hole excavation unit 74 suspended from the distal end of a telescopic telescopic 71 installed at the distal end thereof, The vertical hole excavation system 80 provided with a suction duct 75 for supplying air suction force from the ground to the debris suction means and sucking and discharging the excavated debris to the ground, unmanned and excavating the vertical shaft, The excavated debris can be discharged to the ground sequentially.

<Embodiment 3>
As explained in paragraphs [0068] and [0069], the core of the reinforcing bar assembling apparatus of the present invention hangs the vertical bars and the horizontal bars to be assembled to them without depending on the cranes separately from the crane that hangs the vertical bars. More specific contents of the reinforcing bar hanging means will be described below with reference to FIGS. 17 to 19.

FIG. 17 shows an example of a reinforcing bar suspending means that forms the core of a reinforcing bar assembling apparatus using a vertical shaft according to the present invention. FIG. 17A is a conceptual longitudinal sectional view, and FIG. It is CC sectional drawing. The reinforcing bar suspending means 55 unwinds the wire 41A and a suspending wire 41A as a suspending elevating means as compared with the combination of the rack-type gantry suspending material 41 and the elevating hydraulic cylinder 44 of FIG. The difference is that the rebar suspension winch 44A to be wound is combined.

In addition to the above-described components, the reinforcing bar suspending means 55 includes a reinforcing bar support 47A similar to the reinforcing bar support 47 shown in FIG. 1 and an elevating vertical guide 42A. That is, in order to raise and lower the reinforcing bar support 47A, the combination of the rack type suspension material 41 and the lifting hydraulic cylinder 44 is not used, but the hanging wire 41A and the reinforcing bar hanging winch 44A are used. These (41A and 44A) are provided at four positions that divide the outer circumference of the reinforcing bar into four equal parts so as to surround the reinforcing bars to be assembled.

Reinforcing bar suspension winch 44A is a commercially available one that has a predetermined hoisting ability, and is installed in an appropriate location such as a fixed foundation hole used for vertical shaft excavation above vertical shaft 15T. The pulley 41a turns the suspension wire 41A unwound from the winch 44A in the direction of the reinforcing bar base 47A that is lifted and lowered in the vertical shaft 15T, vertically downward.

The vertical vertical guide 42A is channel steel that is detachably attached to the inner periphery of the vertical shaft 15T and extends from the lowermost end of the vertical shaft 15T to the upper end again so as to guide the position where the hanging wire 41A moves up and down. The back side comes into contact with the inner periphery of the earth retaining body 15 and guides the suspension wire 41A at both sides on the opening side.

Here, in order to make the guide less loose, a guided projection 47b is provided in a corresponding portion of the reinforcing bar support 47A, and the wire 41A is firmly tightened and fixed to the guided projection 47b. A lock member 47a is installed to strengthen the connection between the hanging wire 41A and the reinforcing bar support 47A.

A gap is provided between the guided protrusion 47b and the vertical guide 42A so as not to hinder the guided protrusion 47b from moving up and down and the position of the guided protrusion 47b in the outer peripheral direction does not fluctuate. With such a configuration, the lifting and lowering of the reinforcing bar support 47A by the hanging wire 41A does not change the position in the circumferential direction, and the four hanging portions are lifted and lowered equally.

On the other hand, the wire lock member 47a and the guided protrusion 47b of the reinforcing bar support 47A are connected by a detachable fixing means, and after the assembly of the reinforcing bar is completed, the wire lock member 47a is connected to the guided protrusion 47b, That is, it is removed from the reinforcing bar cradle 47A, wound together with the hanging wire 41A, and recovered to the ground. Further, the elevating vertical guide 42A is then recovered when the vertical shaft 15T is recovered and pulled up to the ground together.

According to the reinforcing bar suspending means 55 having such a configuration, the same effect as that of the reinforcing bar assembly apparatus using the vertical shaft and the reinforcing bar assembly method using the vertical shaft described with reference to FIGS. It does not require a large crane, and does not take up extra space for assembling the vertical and horizontal bars, making it possible to assemble a rebar with the required length even in a narrow mountainous area. .

<Embodiment 4>
FIG. 18 shows another example of the reinforcing bar suspending means forming the core of the reinforcing bar assembling apparatus using the vertical shaft according to the present invention, wherein (a) is a conceptual longitudinal sectional view, and (b) is (a). (C) is DD sectional drawing of (b). This reinforcing bar suspending means 55A is different from the reinforcing bar suspending means 55 in FIG. 17 in that the reinforcing bar support 47B is suspended by a chain instead of a wire.

The reinforcing bar hanging means 55A includes a reinforcing bar hanging chain 41B as a hanging lifting means, a reinforcing bar support 47B similar to the reinforcing bar support 47A shown in FIG. 17, and a vertical lifting guide 42B similar to the vertical lifting guide 42A. And a reinforcing bar hanging chain block 44B. That is, to raise and lower the reinforcing bar support 47B, not the hanging wire 41A and the reinforcing bar hanging winch 44A, but four sets of reinforcing bar hanging chain blocks 44B and the reinforcing bar hanging chains 41B are used.

The rebar suspension chain block 44B is a commercially available one having a predetermined suspension capacity, and is suspended and installed above a vertical shaft 15T at an appropriate place such as a fixed foundation hole used for vertical shaft excavation. The pulleys 41b and 41c determine the horizontal position so that the rebar suspension chain 41B of the chain block 44B is aligned with the direction in which the rebar support 47B that is lifted and lowered in the vertical shaft 15T is suspended from the position directly below. , It is made to face vertically downward.

The vertical vertical guide 42B has the same configuration as the vertical vertical guide 42A in FIG. 17, the chain fixing member 47b has the same configuration as the wire lock member 47a in FIG. 17, and the guided projection 47c has the guided projection 47b in FIG. It has the same effect.

According to the reinforcing bar suspending means 55A having such a configuration, the same effect as the reinforcing bar assembling apparatus using the vertical shaft and the reinforcing bar assembly method using the vertical shaft described in FIGS. The same effect as the lowering means 55, that is, a large crane is not required to hang the vertical bars, and no extra space is required for assembling the vertical and horizontal bars. The effect that the rebar can be assembled can be exhibited.

<Embodiment 5>
FIG. 19 shows another example of the reinforcing bar suspending means that forms the core of the reinforcing bar assembling apparatus using the vertical shaft of the present invention. FIG. 19 (a) is a conceptual longitudinal sectional view, and FIG. It is EE sectional drawing of. The rebar suspending means 55B includes a linear worm having an infinite radius of the worm wheel and a worm meshing with the worm wheel suspending member 41 in FIG. The difference is that they are combined.

The reinforcing bar suspension means 55B includes a linear rack-shaped reinforcing bar suspension worm wheel member 41C having an infinite radius of the worm wheel, and an elevating drive unit 44C including a worm 44a meshing with the worm wheel member 41C. The reinforcing bar support 47C having the same configuration as the reinforcing bar support 47 of FIG. 1 is provided. Reinforcing bar hanging worm wheel-like member 41C corresponds to a hanging lifting means.

In order to maintain the meshing state of the rebar-suspended worm wheel-like member 41C and the worm 44a, the worm wheel-like member 41C is guided so as not to move in the horizontal direction with respect to the worm 44a, and the vertical movement is allowed. A wheel-shaped member guide 44b is extended from the main body side of the lifting / lowering drive unit 44C. The elevating drive 44C includes a drive source that generates a predetermined torque, and can rotate the worm 44a in the forward and reverse directions.

When the worm 44a is rotated forward, the reinforcing bar hanging worm wheel-like member 41C is raised, and when the worm 44a is reversed, the reinforcing bar hanging worm wheel-like member 41C is lowered. Further, the worm wheel-like member 41C can be made to have a necessary length by adding a unit length as in the rack-type gantry suspension member 41 of FIG.

If such a combination of the worm 44a and the rebar-suspended worm wheel-like member 41C is used, the worm wheel-like member 41C can be moved up and down by the rotation of the worm 44a if the advance angle of the worm 44a is sufficiently small. However, even if a vertical load is applied from the worm wheel-like member 41C, the worm 44a does not rotate and the vertical position of the worm wheel-like member 41C can be maintained. Can be made.

In that case, the temporary holding stopper 46 which is necessary in FIG. 1 is not necessary. However, rotation lock means for the worm 44a may be provided on the lifting drive 44C side.

According to the reinforcing bar suspension means 55B having such a configuration, the same effect as that of the reinforcing bar assembly apparatus using the vertical shaft and the reinforcing bar assembly method using the vertical shaft described with reference to FIGS. It does not require a large crane, and does not take up extra space for assembling the vertical and horizontal bars, making it possible to assemble a rebar with the required length even in a narrow mountainous area. .

In the case of using the rack-type gantry suspension member 41 of FIG. 1, the spur gear that meshes with the rack-type gantry suspension material 41 is used to move the rack-type gantry suspension material 41 up and down. The rack-type gantry suspension member 41 may be moved up and down by rotating the gears with a drive source. In this case, if a spur gear rotation lock means is provided in the drive source, the temporary holding stopper 46 which is necessary in FIG.

<Embodiment 6>
FIG. 20 shows another example of the earth retaining body used in the vertical pile construction method of the present invention, where (a) is a top view of the assembled state, (b) is an FF sectional view of (a), and (c) is , (A) is a top view of the main body member, (d) is a front view of (c), (e) is an enlarged cross-sectional view showing a vertical connection mode of the main body of (a), (f) is ( The front view of the connection member of a), (g) is a bottom view of (f).

The assembled body 15A is in an assembled state as shown in FIG. 20A, but one stage is composed of four 90-degree arc-shaped earth retaining body members 15a, and these four form a one-stage arc shape. Are assembled so as not to be separated from each other in the circumferential direction by four connecting members 15f. The connection between the upper and lower earth retaining bodies 15A is achieved by fitting the connection concave portions 15c provided in the respective earth retaining body members 15a and the connection convex portions 15d. This will be described in more detail below.

The earth retaining body member 15a includes a peripheral wall portion 15b forming an arc shape of 90 degrees, a connecting end portion 15e protruding in the center direction from both ends in the circumferential direction of the peripheral wall portion 15b, and one end in the vertical direction of the peripheral wall portion 15b. The above-described connecting recess 15c is provided, and the above-described connecting protrusion 15d is provided at the other end. When four earth retaining body members 15a are combined, an arc is formed. At that time, the connecting end portions 15e at both ends of each earth retaining body member 15a come into contact with each other.

As shown in FIG. 20 (e), the connecting recess 15c includes a recessed lower member 15ca extending in the center direction from the inner periphery of one end of the peripheral wall portion 15b, and a recessed vertical member 15cb rising upward from the inner peripheral end of the recessed lower member 15ca. And a concave upper member 15cc extending from the upper end of the concave vertical member 15cb toward the peripheral wall portion 15b. The peripheral end portion of the concave upper member 15cc on the side of the peripheral wall portion 15b is located on the inner side of the inner periphery of the peripheral wall portion 15b, which hinders the overlapping of the peripheral wall portion 15b of the earth retaining body member 15a to be connected thereto. Absent.

The concave upper member 15cc of the connecting concave portion 15c is narrowed toward the concave upper member 15cc as compared to the opening side, so that the connecting convex portion 15d entering here is easily inserted when fitted, Even when only the upper retainer 15A is lifted so that there is no gap between the connecting convex part 15d and the deep part of the connecting concave part 15c, there is no gap between the upper and lower peripheral wall parts 15b. You can make it impossible.

The connecting convex portion 15d extends in the center direction from the inner periphery of the other end of the peripheral wall portion 15b and has a shape that fits into the connecting concave portion 15c. The fitting without a gap between the connecting recess 15c and the connecting protrusion 15d may be a method of adjusting the opening width of the connecting recess 15c as described above, but without changing the opening width of the connecting recess 15c, The gap between the two may be eliminated by adjusting the pressure of the connecting convex portion so that the connecting convex portion 15d becomes thicker from the center side, that is, the tip side, to the peripheral wall portion 15b side, that is, the original side. .

The fitting with no gap between the connection recess 15c and the connection protrusion 15d may be adjusted by both the connection recess and the connection protrusion.

The circumferential end portions of the connection recess 15c and the connection projection 15d are close to the connection end portion 15e so that a predetermined gap is formed so that the connection member 15f can be fitted into the connection end portion 15e. ing. These connecting concave portions 15c and connecting convex portions 15d serve as upper and lower ribs with respect to the peripheral wall portion 15b, and improve the structural strength of the assembled earth retaining body 15A as a whole.

The earth retaining body member 15a may be integrally formed as a whole, or may be a welding configuration in which the members are connected to each other by welding, or may be configured to appropriately weld an integrally formed product.

As shown in FIGS. 20 (f) and (g), the connecting member 15 f is formed by inclining the steel plate so that the cross section is “concave” and the interval decreases from the bottom to the top. A connecting main body member 15fa having a shape that sandwiches the connecting end portions 15e in contact with each other with a certain tightening margin at the tip opening portion, and an end cover member 15fb that covers one end thereof. Yes.

The end cover member 15fb is for preventing the connecting member 15f from dropping from the state where the connecting end portions 15e are sandwiched by the weight of the connecting member 15f, but the connecting body member 15fa is connected by the tightening allowance. This is not always necessary when the ends 15e remain firmly. On the other hand, the end cover member 15fb is necessary when the connection main body member 15fa is loosely tightened with respect to the connection end portions 15e or is provided with a clearance for ease of insertion. Is something.

Here, the connecting member 15f is illustrated as a two-stage connecting the connecting ends 15e of the earth retaining bodies 15A stacked in two stages up and down, but even for a single stage, it is for three or more stages. There may be.

A method of assembling the earth retaining body 15A composed of the earth retaining body member 15a and the connecting member 15f as described above will be described with reference to an example of two-stage stacking. First, the earth retaining body member 15a is connected to the connecting convex portion 15d at a flat place. 4 are combined so that a circular shape is formed on the bottom, and the connection convex portion 15a of the next earth retaining body member 15a is inserted into the connection concave portion 15a above the first earth retaining body member 15a. Fit as shown in 20 (e).

Then, the two-stage pile retaining body 15A shown in FIG. 20B is not yet connected in the circumferential direction, and here, the connecting end portions that are in contact with each other between the adjacent soil retaining body members 15a. When four connecting members 15f are fitted into 15e with the end opening side facing down, the assembly of the two-stage stacked earth retaining member 15A shown in FIGS. 20 (a) and 20 (b) is completed.

If this assembly is repeated, the earth retaining body 15A can be formed by stacking any number of stages. When disassembling, the connecting member 15f is attached to each stage (or each upper and lower connection stage) in the reverse order of this assembly. It is only necessary to remove and then remove each earth retaining body member 15a in the outer circumferential direction.

According to such a debris body 15A, since the conventional debris body was fastened with bolts and nuts to the top, bottom, left and right respectively, it took a very long time to assemble and disassemble. Assembling and disassembling can be performed only by attaching and detaching the members 15f, arrangement of the respective earth retaining body members 15a, and upper and lower fitting / removal, so that the time for assembling and disassembling the earth retaining body 15A can be greatly reduced.

In addition, in the structure of the earth retaining body 15A, the connecting recess 15a is relatively expensive as compared with the conventional simple brim, but in the vertical pile construction method of the present invention, the earth retaining body 15A is It can be recovered and reused many times, and the reduction in assembly and disassembly can be sufficient to cover the cost increase.

In the vertical pile construction method of the present invention, since the force from above to below acts on the earth retaining body 15A, the upper and lower earth retaining bodies 15A are pressed against each other, and the earth retaining bodies 15A are The problem of separation does not occur. On the other hand, when concrete is placed on the soil wall portion where the retaining body 15A disappears while the retaining body 15A is raised and collected, even if a slight gap is generated between the upper and lower retaining bodies 15A, The gap does not become a problem.

In that sense, the adjustment mechanism that eliminates the gap between the connecting concave portion 15a and the connecting convex portion 15d so as not to cause a gap between the upper and lower earth retaining bodies 15A is not necessarily required.

In this example, the earth retaining body member 15a and the connecting member 15f have been described as being thicker than those actually used in order to make the structure easier to understand. The soil bodies used in the above are appropriately determined in consideration of the strength corresponding to the soil quality. Moreover, these materials are steel plates and may be plated so that they are not easily rusted.

<Embodiment 7>
FIG. 21 is a longitudinal sectional view showing an example of a soil retaining assembly used in the vertical pile construction method of the present invention. 22A is an enlarged cross-sectional view of a main part of a connecting portion between liner plates of the earth retaining assembly of FIG. 21, FIG. 22B is a side view of FIG. 21, and FIG. 22C is a vertical connection of the earth retaining assembly of FIG. The principal part expanded sectional view of a part, (d) is a side view of (c).

The earth retaining assembly 16 is provided below a liner plate 16a having a shape obtained by dividing a circumference generally used for earth retaining when excavating a vertical hole into four parts, and a structure in which the liner plate 16a is assembled in a circular shape and stacked in two stages. A connecting male member 17 to be installed, a connecting female member 18 to be installed above, and a reinforcing member 19 used for reinforcement for connecting the liner plates 16a and the like are provided. Hereinafter, after describing the above-described components, returning to FIGS. 21 and 22, the overall configuration will be described in more detail.

FIG. 23 shows a liner plate constituting the earth retaining assembly of FIG. 21, wherein (a) is an external perspective view, (b) is a side view of (a), and (c) is a top view of (a). It is. The liner plate 16a is generally commercially available. The shape of the liner plate 16a will be described with reference to FIG. 22 to the extent necessary to understand the overall structure of the earth retaining assembly 16.

The liner plate 16a is formed on the upper and lower ends of the corrugated body 16b that is formed in a corrugated shape after forming a corrugated steel sheet, and the corrugated body 16b in the circular central axis direction formed thereby. An upper and lower connection edge 16c for connecting the upper and lower sides, a circumferential connection edge 16d for connecting the adjacent ones to each other, and an upper and lower connection edge 16c and a circumferential connection edge 16d. And a plurality of connecting holes 16e provided in the upper and lower flat portions of the corrugated body 16b.

The plurality of connecting holes 16e provided in the upper and lower flat portions of the corrugated body 16b are unique to the liner plate 16a used in the present application, but for attaching the reinforcing member 19 and the like as described below. It is provided as needed.

Normally, four liner plates 16a are adjacently formed so as to form a circle, and are detachably connected by fastening means such as bolts and nuts using a connection hole 16e of a circumferential connection edge 16d. Is used as the earth retaining material referred to in the present application. However, in the present invention, improvements have been made as will be described later with reference to FIGS.

FIG. 24 shows other parts constituting the earth retaining assembly of FIG. 21, wherein (a) is an external perspective view of the connecting male member, (b) is an external perspective view of the connecting female member, and (c). FIG. 3 is an external perspective view of the reinforcing member.

The connecting male member 17 in FIG. 24 (a) has a plurality of commercially available extruded steel channel steels which are processed into an arc shape so that both leg portions thereof are the inner and outer circumferences of a circle, and a plurality of so as to penetrate the leg portions. The upper and lower connecting holes 17a are provided, and a plurality of liner connecting holes 17b corresponding to the connecting holes 16e of the upper and lower connecting edges 16c of the liner plate 16a are provided on the back portion thereof. The upper and lower connecting holes 17a are preferably provided at different positions in the circumferential direction with respect to the liner connecting holes 17b so that the fastening means such as bolts and nuts attached to both do not interfere with each other.

The connecting female member 18 in FIG. 24 (b) has a plurality of C-shaped steels, which are commercially available lightweight steels, processed into an arc shape so that both leg portions thereof are the inner and outer circumferences of a circle, and a plurality of so as to penetrate the leg portions. The upper and lower connecting holes 18a are provided, and a plurality of liner connecting holes 18b corresponding to the connecting holes 16e of the upper and lower connecting edges 16c of the liner plate 16a are provided on the back portion thereof. Also in this case, it is preferable that the upper and lower connecting holes 18a are provided at different positions in the circumferential direction with respect to the liner connecting hole 18b so that fastening means such as bolts and nuts attached to both do not interfere.

The connecting female member 18 may be of a standard and size that fits in the connecting male member 17 with the leg portions facing each other. The upper and lower connecting holes 18a of the connecting female member 18 are provided at the same position as the upper and lower connecting holes 17a of the connecting male member 17, and through both the upper and lower connecting holes 18a and 17a, fastening means such as bolts can be passed. It is like that.

The reinforcing member 19 in FIG. 24 (c) is a commercially available extruded steel angle steel processed into an arc shape so that one of the sides is the outer circumference of the circle, and the circumferential side and the center of the arc. Are provided with a plurality of liner connection holes 19a corresponding to the connection holes 16e of the upper and lower connection edges 16c of the liner plate 16a and the plurality of connection holes 16e provided in the upper and lower flat portions of the corrugated body 16b. It is.

The connecting male member 17, the connecting female member 18, and the reinforcing member 19 are the same as the liner plate 16a in that they have an arc shape that divides the circumference into four equal parts. That is, the central angle of the arc length of each member forming these arcs is 90 degrees.

Now, a procedure for assembling the earth retaining assembly 16 using the liner plate 16a, the connecting male member 17, the connecting female member 18, and the reinforcing member 19 will be described with reference to FIGS.

First, the circumferential connecting edges 16d of the four liner plates 16a are adjacent to each other so as to form a circle. Here, the adjacent liner plates 16a are detachably connected by fastening means such as bolts and nuts using the connection holes 16e formed in the circumferential connection edge 16d. In this way, a one-stage cylindrical thing is formed, and it becomes the earth retaining body said by this application. Two such earth retaining bodies are prepared.

The two retaining bodies are stacked one above the other via four reinforcing members 19. At this time, the reinforcing member 19 and the liner plate 16a are overlapped so that the arc of the liner plate 16a is shifted by 45 degrees. The liner connecting hole 19a provided at the center-facing side of the arc of the reinforcing member 19 and the connecting hole 16e provided at the upper and lower connecting edges 16c of the liner plate 16a are used to form upper and lower cylindrical shapes by fastening means such as bolts and nuts. The liner plate 16a is connected.

As described above, when the arc of the reinforcing member 19 and the arc of the liner plate 16a are overlapped so as to be shifted by 45 degrees and connected to each other, the structural shape of the cylindrical structure of the base of the cylindrical earth retaining assembly 16 is obtained. Maintenance strength is strengthened.

Next, on the outer peripheral side of the two-stage cylindrical liner plate 16a, a backing reinforcing plate material 16f obtained by bending the steel plate into a quarter arc is provided on the circumferential side of the reinforcing member 19 for each step. The liner connecting hole 19a provided and the connecting hole 16e provided in the upper and lower flat portions of the corrugated body 16b of the liner plate 16a are attached by fastening means such as bolts and nuts.

Further, at this time, as shown in FIGS. 22 (a) and 22 (b), a connecting plate 16g obtained by bending a steel plate that connects the upper and lower backing reinforcing plate members 16f into a quarter arc shape is interposed. Covering the gap between the upper and lower backing reinforcing plate members 16f, the upper and lower backing reinforcing plate members 16f can be connected with high strength.

The backing reinforcing plate member 16f and the connecting plate 16g at the outer peripheral portion reinforce the lack of vertical strength of the liner plate 16a and cover the waveform of the corrugated body 16b of the liner plate 16a to try to dig, or The earth retaining assembly 16 can smoothly move up and down the vertical hole after excavation.

Next, the connecting male member 17 is similarly attached via the reinforcing member 19 to the lower side of the two-stage cylindrical liner plate 16a thus formed, and the connecting female member 18 is similarly attached via the reinforcing member 19 to the upper side. . This completes the assembly of the earth retaining assembly 16. At this time, the arcs of the reinforcing member 19 + the connecting male member 17 and the reinforcing member 19 + the connecting female member 18 are overlapped with the arc of the liner plate 16a so as to be shifted by 45 degrees. The reason and effect are as described above.

21 and 22 show a state in which the earth retaining assembly 16 assembled in this way is connected up and down. The connection method will be described. 22 (c) and 22 (d), the connecting male member 17 of the upper earth retaining assembly 16 is overlapped so that the connecting female member 18 of the lower earth retaining assembly 16 fits and connected. The upper and lower connection holes 17a of the male member 17 and the upper and lower connection holes 18a of the connection female member 18 are made to coincide with each other, and a long bolt 17c is passed through the outside from here, and a nut fixed to the outside of the upper and lower connection holes 17a of the connection male member 17 Then, the upper and lower earth retaining assemblies 16 are connected.

The nut may be fixed inside the upper and lower connection holes 17 a of the connection male member 17. In this case, if this nut interferes with the leg portion of the connecting male member 17, it is preferable to provide a relief notch opened at the end of the leg portion in the leg portion.

In this earth retaining assembly 16, the upper and lower earth retaining assemblies 16 can be connected simply by inserting and tightening bolts 17 c in the horizontal direction so as to penetrate the connecting male member 17 and the connecting female member 18. In addition, when releasing the connection, it is only necessary to loosen and remove each bolt 17c, so that workability is good. In addition, the bolt 17c is inserted from the outside of the earth retaining assembly 16 and the bolt can be tightened in a wide space outside the earth retaining assembly 16, and a power type tightening machine can be used. Good sex.

The inside of the earth retaining assembly 16 is in a state in which reinforcing bars are assembled before the concrete is placed, and it is difficult for the worker to work in it. There is no need to enter the inside of the assembly 16, and the earth retaining assembly 16 can be connected and disconnected only from the outside.

In addition, as shown in this example, it is preferable to use the bolt 17c provided with a minus groove at the pan head. The hexagon socket head cap screw is on the side in contact with the excavated earth wall, so that the earth and sand enter the hole and the removal work is troublesome. On the other hand, if it is a minus groove, even if earth and sand enter, it is easy to remove. Moreover, if it is a pan head, there is little protrusion amount to the earth wall side, and it is hard to become a trouble at the time of raising / lowering of the earth retaining assembly 16. In this respect, a truss or flat head may be used.

In contrast, in the conventional assembly of only the liner plate 16a that does not use the connecting male member 17 and the connecting female member 18 or the like, the upper and lower connecting holes 16e of the upper and lower connecting edges 16c are vertically moved when vertically connected. The bolts and nuts and other fastening means are inserted into the cylinder body, and the tightening work must be done inside the narrow cylindrical body composed of the liner plate 16a. It was. The same applies to cancellation.

In the earth retaining assembly 16 of the present application, the fact that the labor of the vertical connection can be greatly reduced means that the earth retaining assembly 16 is sequentially connected and lowered into the vertical hole, and then the earth retaining is sequentially performed while placing the concrete. In the vertical pile construction method of the present invention in which the assembly 16 is lifted, disconnected, and taken out to the ground, a large time and labor can be saved, and the construction period can be greatly shortened.

In addition, by connecting the earth retaining assembly 16 up and down as needed and releasing the connection, the necessary length is provided as the earth retaining body described in the vertical pile construction method of the present invention. . In addition, about the diameter of a vertical pile, the thing of the diameter according to a use can be formed by selecting the standard goods of the liner plate 16a suitably.

The backing reinforcing plate material 16f, the connecting plate 16g and the reinforcing member 19 are used as reinforcement when the liner plate 16a is connected up and down, or when the liner plate 16a is connected to the connecting male member 17 and the connecting female member 18, If the strength does not matter so much depending on the soil where the vertical piles are provided, it may be omitted. Further, as the liner plate, one having a circle divided into eight equal parts and having an arc center angle of 45 degrees may be adopted. In this case, the circumferential connecting edge plays a role of reinforcing in the vertical direction. Even in this case, there is a possibility that a backing reinforcing plate or the like may be unnecessary in terms of strength.

21 and 22, since the reinforcing member 19 is interposed, there is a gap between the inner surface of the backing reinforcing plate member 16f and the outermost outer peripheral surface of the corrugated main body 16b of the liner plate 16a. If the reinforcing plate is sandwiched only by this portion, the strength in the radial direction of the backing reinforcing plate member 16f is supported by the corrugated body 16b and is improved. In addition, it replaces with the liner plate which has the waveform reinforcement of the corrugated main body 16b, and the reinforcement frame of the steel pipe (a circular pipe is suitable, although not limited to this) which contacts the inner periphery of the backing reinforcement board | plate material 16f. May be provided.

Although the description has been given here of the liner plate that divides the circumference into four parts, there are also parts that are divided into five parts, six parts, or more depending on the diameter of the circumference. The member, the connecting female member, the reinforcing member, and the like also correspond to it. In addition, these members and the liner plate are overlapped with each other so that each seam is the center of the other arc or the arc portion. This is to improve the arc shape maintenance strength.

Moreover, since the connection male member 17, the connection female member 18, and the reinforcement member 19 used the commercial item, the material cost can be reduced in the case of small-scale production. However, these materials are not limited to commercial products. The earth retaining assembly 16 is illustrated as having two stages of liner plates 16a, but it may be one stage, three stages or more.

<Eighth embodiment>
FIG. 25: shows the outline | summary of the reinforcing bar assembly apparatus using the vertical shaft of this invention, and the other example of the reinforcing bar assembly method using the vertical shaft, The (a) is notional showing the whole structure. (B) is a top view of the reinforcing bar support, (c) is an external perspective view of the main part of the reinforcing bar support of (b), and FIG. 26 is included in the reinforcing bar assembly apparatus and method of FIG. The main part of the reinforcing bar suspension means is schematically shown. (A) is a diagram schematically showing the reinforcing bar suspension means, and (b) and (c) are the main parts of the vertical bar support means. The front view, (d) is a front view of the supporting longitudinal bar connecting means, (e) is a bottom view of (d).

In FIG. 26 (a), a top view of the reinforcing bar hanging means 41D (41U) is arranged at the center, and on the left and right sides, the raising / lowering vertical bar supporting means 41U above the reinforcing bar hanging means 41D is moved up and down. A vertical sectional view of means (lifting hydraulic cylinder) 44 is shown. Moreover, FIG.26 (b), (c) is AA arrow sectional drawing of Fig.26 (a).

The first to fifth embodiments described above with reference to FIGS. 1 to 19 are different from the reinforcing bars used for assembly in that the reinforcing bar suspension means 55 to 55B are separated from the reinforcing bars to be assembled and the shaft 15T. This was used to suspend the reinforcing bar bases 47 to 47C. However, in this method, the interval (gap) between the reinforcing bar and the vertical shaft 15T is required by the amount of the reinforcing bar suspension means 55 to 55B, and the interval may not be ensured depending on the standard of the vertical shaft 15T.

The eighth embodiment is such that rebar assembly using the vertical shaft of the present application can be performed even when a sufficient interval cannot be ensured between such a reinforcing bar and the vertical shaft 15T. The difference is that a part of the vertical bar 31 is used as a supporting vertical bar 31A which is a part of the reinforcing bar hanging means 41D, and the vertical bar supporting means 46A is used to detachably support the reinforcing bar 31A. It is a point provided with means 41D. More specific description will be given below.

As shown in FIGS. 25 and 26, the reinforcing bar assembly device 60A using the vertical shaft is a part of the vertical bar 31 and is fixed to the reinforcing bar pedestal 47D as compared with the above-described reinforcing bar assembly device 60. Is used as the supporting vertical bar 31A which is a part of the reinforcing bar hanging means 41D, and the vertical bar supporting means 46A (see FIG. 26) for detachably supporting the supporting vertical bar 31A is used as the supporting means for the reinforcing bar hanging means 41D. It was different.

The reinforcing bar pedestal 47D has a ring shape that can receive the necessary vertical bars, and is fixed to the position where the circumference is divided into four equal parts with a predetermined interval between the supporting reinforcing bars 31A. Has been. In this fixing method, as shown in FIG. 26 (c), a short vertical bar 31a is formed in advance at a predetermined position in a reinforcing bar base 47D, and then the vertical bar 31a is formed in the through hole. When the steel bar is fixed by a method such as welding after being penetrated, and then connected to the supporting bar 31A suspended by the crane using the reinforcing bar connecting means 34, the supporting bar 31A and the reinforcing bar base 47D are connected to each other. The on-site fixing work becomes easier than the direct welding of the supporting rebar 31A.

However, the supporting reinforcing bar 31A suspended by the crane is passed through the through hole provided in the reinforcing bar receiving part 47D, and the supporting reinforcing bar 31A is fixed to the reinforcing bar receiving part 47D on the spot by welding or the like. Good. A guided projection 47d having the same function and effect as the guided projection 47b of the reinforcing bar support 47A of FIG. 17 is provided on the outer periphery of the reinforcing bar support 47D, and although not shown on the vertical shaft 15T side, A vertical vertical guide similar to the vertical vertical guide 42A of FIG. 17 is provided. However, the guided projections 47d and the up-and-down vertical guide are not essential components.

The reinforcing bar support 47D is also provided with a rectangular reinforcing frame 47e for maintaining the ring shape and enhancing the structural strength. The reinforcing frame 47e reinforces the reinforcing bar support 47D so that the reinforcing bar support 47D is not deformed even when all the vertical and horizontal bars from the bottom to the top of the well are supported by the reinforcing bar support 47D. For example, it may be replaced by reducing the inner circumference of the ring shape. Further, the reinforcing frame may not be required depending on the diameter and depth of the shaft formed.

The stage 48A plays the same role as the stage 48 in FIG. 1, but is provided at a higher position than the stage 48 in FIG. The stage 48A serves as an upper work place, and is mainly a place for placing the horizontal stripes 32 as will be described later. Reference numeral 51 denotes a vertical shaft working space 51 located inside the fixed foundation hole 30 above the vertical shaft 15T.

As shown in FIG. 25, the reinforcing bar suspension means 41D includes a fixed vertical bar support means 41L provided on a fixed guide ring 42A fixed to the upper part of the vertical shaft 15T, and a vertical shaft 15T above the vertical shaft 15T. The vertical elevating vertical support means 41U provided on the elevating guide ring 43A fixed to the end of the elevating means (elevating hydraulic cylinder) 44 fixed to the upper and lower portions is provided in the vertical direction.

What is common to the up / down vertical bar support means 41U and the fixed vertical bar support means 41L is that a plurality of support vertical bars can be attached / detached via a movable auxiliary tool 46B movable in the circumferential direction of the H-shaped steel, respectively. That is, the supporting vertical muscle support means 46A is suspended. In this example, the movable auxiliary tool 46B is provided at a position that divides the circumference of each guide ring 42A, 43A into four equal parts.

The longitudinal bar support means 46A shown in FIGS. 26 (b) and 26 (c) is commercially available, and the vertical bar as shown in the figure so as to withstand a predetermined weight by utilizing the profile of the vertical bar which is a deformed steel bar. A suspension part 46a for suspension, a lock maintaining means 46b for maintaining the support lock state of the longitudinal bars, and a lock operating means 46c for releasing the setting of the lock. ing. The longitudinal muscle support means 46A is suspended from the movable auxiliary tool 46B by a suspension 46a.

The lock maintaining means 46b is always energized so that the two-dot chain line state returns to the solid line state, and the lock operation means 46c is always returned from the state shown in FIG. 26C to the state shown in FIG. 26B. . Further, the lock maintaining means 46b acts to maintain the lock state of the lock operating means 46c in FIG.

The movable auxiliary tool 46B includes a movable main body portion 46d of a square steel pipe that wraps the guide ring 43A, a radial movement support portion 46e installed below the movable main body portion 46d, and the radial movement support portion 46e. And a moving suspension aid 46f that moves along the center of the circumference formed by the guide ring 43A. A suspension portion 46a of the longitudinal muscle support means 46A is suspended from the moving suspension assisting tool 46f. The longitudinal muscle support means 46A requires the corresponding radial movement support portions 46e and movement suspension assisting tools 46f. Correction

In the vertical elevating vertical muscle support means 41U and the fixed vertical muscle support means 41L according to the present invention, the combination of the vertical muscle support means 46A and the movable auxiliary tool 46B having such a configuration makes it possible to ) Can be formed.

FIG. 26B shows that the longitudinal muscle support means 46A is at the innermost position (position near the center) of the circumference of the guide ring 43A, that is, the inner position of the lifting / lowering longitudinal muscle support means 41U, and the support longitudinal muscle 31A. Is shown in a state where the lock is supported. In contrast, FIG. 26 (c) shows that the supporting vertical muscle 31A is opened and the vertical muscle supporting means 46A is located outside the lifting vertical muscle supporting means 41U, and between the supporting vertical muscle 31A and the vertical muscle supporting means 46A. This shows a state in which there is a gap, and the horizontal streak 32 can vertically pass through this gap.

In order to achieve the lock support state of the support vertical bar 31A of the vertical bar support means 46A of FIG. 26 (b) and the open state of FIG. 26 (c), two lock maintaining means 46b and lock operation means 46c are used as appropriate. It only has to be lowered in the direction of the dotted line. Thus, the opening / supporting operation requires a two-step operation to prevent the release / support due to malfunction. The lock maintaining means and the lock operation means may include a string-like one.

The number of the longitudinal bar support means 46A used is determined by the relationship between the rated supportable load per piece and the total weight of the reinforcing bars to be assembled (the whole of the vertical and horizontal bars, for example). Is 3 meters, the depth is 20 meters, and the weight of the reinforcing bar is 20 tons, the vertical bar support means 46A rated for 2 tons, as shown in this example, is divided into four parts at three locations. When twelve are used, the total rated weight is 24 tons, and the necessary reinforcing bars can be supported from the top to the bottom.

It should be noted that the position and number of the longitudinal bar supporting means 46A, that is, the position and number of the supporting reinforcing bars 31A are determined by the required overall rated weight determined by the outer diameter and length (depth) of the reinforcing bars to be assembled. In this example, it is not limited to a total of 12 pieces, each of which is 3 in 4 equal parts, and the number of equal parts may be 2 parts, 3 parts, 4 parts or more, and the number is also an example of this. It is not limited to those.

The supporting vertical bar connecting means 34 shown in FIGS. 26 (d) and 26 (e) are commercially available, and are supported as shown so as to withstand a predetermined weight by utilizing the outer shape of the vertical bar which is a deformed steel bar. The vertical bars 31A can be connected vertically. Here, the connection of the supporting vertical bars 31A is performed so that the connecting directions thereof are such that both are in contact with the horizontal bars 32 attached to the supporting vertical bars 31A, that is, the circumferential direction of the horizontal bars 32. ing. Otherwise, the transverse muscles 32 cannot be bound to the supporting longitudinal muscles 31A.

When the support vertical bars 31A are connected up and down by the support vertical bar connecting means 34, the position of the connected support reinforcing bars 31A is shifted in the circumferential direction of the horizontal bars by one reinforcing bar. For this reason, the position of the circumferential direction of the longitudinal reinforcement supporting means 46A that receives the lower supporting reinforcement 31A before and after the connection and the circumferential direction of the upper supporting reinforcement 31A are shifted in the circumferential direction of the transverse reinforcement by one reinforcing bar. This shift is absorbed by the movable auxiliary tool 46B which is provided so as to be movable in the circumferential direction of the guide rings 42A and 43A described above.

In the example of FIG. 26, the circumferential shift is preferably shifted in the same direction for all the twelve support vertical bars 31A. Then, when the next vertical connection is performed, the movement of the movable auxiliary tool 46B may be within the minimum range if all the supporting vertical bars 31A are shifted in the opposite direction. However, the shifting directions are not necessarily alternating. In this way, the commercial length of the vertical bars is usually determined to be a fixed length (for example, 7 m), but any number of vertical reinforcing bars for vertical shafts can be assembled using the commercially available products.

When the movable auxiliary tool 46B is moved in the circumferential direction on the guide rings 42A and 43A, the vertical bar supporting means 46A suspended by the movable auxiliary tool 46B does not support the support reinforcing bar 31A. If this is done, the load such as a reinforcing bar is not applied, so it can be easily moved by a human hand. At this time, as described in FIGS. 26B and 26C, the guide rings 42A and 43A are also moved in the radial direction.

That is, when supporting the supporting reinforcing bar 31A, the longitudinal reinforcing bar supporting means 46A is in the state shown in FIG. 26B so that the supporting reinforcing bar 31A can be supported. In order to secure the passage gap, the state is moved to the state shown in FIG. The movement of the vertical muscle support means 46A is also performed in an unloaded state as described above.

That is, when moving the movable auxiliary tool 46B and the vertical bar support means 46A of the lower fixed vertical bar support means 41L, the support reinforcing bar 31A is supported by the upper vertical bar support means 41U, and the upper vertical bar When moving the movable auxiliary tool 46B and the longitudinal muscle support means 46A of the muscle support means 41U, the support reinforcing bar 31A may be supported by the lower fixed longitudinal muscle support means 41L.

At the time of this movement, the moving amount of the movable auxiliary tool 46B is only the support vertical line 31A, and the moving amount is determined. Therefore, a stopper that restricts the positions of both ends is provided as a movable auxiliary tool for the guide rings 42A, 43A. If it is provided in the portion where 46B is provided, the moving work can be easily and definitely performed. However, this is limited to the case where the supporting vertical bars 31A are connected up and down alternately in opposite directions.

FIG. 27 schematically shows a horizontal rebar basket included in the reinforcing bar assembling apparatus and method of FIG. 25, (a) is an overall front view, (b) is a top view of (a), and (c) is ( It is a principal part longitudinal cross-sectional view of a). 27 differs from the lateral muscle basket 49 described with reference to FIG. 4 in that the lateral muscle basket 49A includes lateral muscle receivers 49e that individually receive the lateral muscles 32 from the inside.

The horizontal muscle basket 49A includes a vertical member 49c provided at a position that divides the inner circumference of the horizontal muscle 32 into four equal parts, a horizontal member 49d that connects the vertical members 49c to each other at an inner portion of the horizontal muscle 32, and a horizontal stripe 32 of the vertical member 49c. The lateral bar receiver 49e provided on the side facing the inner periphery of the upper side member 49, and a hook portion 49f provided on the upper side of the upper lateral member 49d.

The vertical member 49c and the horizontal member 49d are preferably made of flat steel bars. The horizontal bar receiver 49e receives the horizontal bar 32 from the inner circumferential side of the circumference side. The horizontal bar 32 received by the horizontal bar receivers 49e at four positions is in a natural state by receiving at least a half circumference of the substantially round bar-shaped horizontal bar 32. Then it will not fall. The hook portion 49f is used when the horizontal muscle 32 with the horizontal muscle basket 49A is suspended with a crane or the like.

It is convenient in terms of assembling the reinforcing bars that the horizontal reinforcing bars 49A are attached with the number of horizontal bars 32 to be attached to the vertical bars 31 having a fixed length. That is, the number of the horizontal bars 32 of the horizontal bar basket 49 </ b> A at one time can secure the necessary number of the vertical bars 31 for one standard length.

This horizontal bar cage 49A is suspended in the state shown in FIG. 27A, and from the tip of the vertical bar 31A (31) ready on the vertical shaft side, as shown in FIG. Is lowered so that it enters between the longitudinal bars 31A (31) and 31 (A31), and when it becomes a height that a person can take from the longitudinal shaft side, as shown in FIG. By gradually expanding the inner diameter with human hands in order from the lower horizontal stripe 32, it can be easily removed from the horizontal stripe basket 49A, the outside of the existing vertical stripe 31A (31) is lowered, and the vertical stripe 31A at the target position. (31) can be attached.

As shown in FIG. 27 (c), in the horizontal muscle basket 49A, it is not necessary to pile up the upper and lower overlapping portions 32b of the horizontal muscles 32 so as to alternately face each other like the horizontal muscle basket 49 in FIG. These can be stacked at the same position, which is also the attachment position to the original longitudinal streak 31 (31A), so that the labor of attaching the transverse streak 32 is further saved.

The number of the vertical members 49c of the horizontal muscle basket 49A is not limited to four in this example, and may be two or more. In addition, when the horizontal bar 32 is securely fitted to the vertical member 49c, the crane can be suspended only by the vertical member 49c, and the horizontal member 49d is not necessarily essential.

Further, the horizontal bar receiving of the horizontal bar basket 49A is not limited to the semicircular one shown in the figure, and may be one using a corrugated plate or one having bar-like projections provided at predetermined intervals.

Now, a method for assembling a reinforcing bar using a vertical shaft using the reinforcing bar assembly device 60A using the vertical shaft having the above-described configuration will be described below with reference to FIGS. First, the required number of supporting vertical bars 31A on the ground is prepared in this example, twelve in this example, and connected to the vertical bar hanging ring 33 as described with reference to FIG. Suspend as shown in (d).

In this state, as shown in FIG. 28, after fixing the reinforcing bar support 47D to the supporting vertical bars 31A on the ground, a predetermined number of horizontal bars 32 are sequentially assembled to the supporting vertical bars 31A (initial process). At this time, if necessary, the joint portion of the supporting vertical bars 31A and the horizontal bars 32 may be welded in addition to simply binding them with a binding wire. When the welding is performed, not only the binding of the two but also the relative directionality of the two can be maintained, and the shape-maintaining strength of the cage shape of the rebar cage portion constituted by the supporting vertical bars 31A and the horizontal bars 32 is increased. .

In addition, the method itself of hanging the supporting vertical bars 31A in the free state in the required number by the crane first, and then attaching the horizontal bars etc. on the ground as necessary has not been so far tried. By adopting such a process, the first attaching operation of the horizontal bar 32 can be performed on the ground, and the attaching time can be shortened. Further, according to this initial process, there is no problem of difficulty in lifting the assembled reinforcing bars with a crane after the horizontal bars 32 are first assembled to the supporting vertical bars 31A.

In the case of using this reinforcing bar assembly device 60A, since it is necessary to attach the reinforcing bar support 47D to the first supporting reinforcing bar 31A, the above initial process is performed on the ground, and the necessary number of horizontal bars 32 in the flow. Is also attached. On the other hand, on the ground, only the reinforcing bar support 47D may be fixed to the first supporting reinforcing bar 31A as described with reference to FIG. 25, and the horizontal bars 32 may be attached using a vertical shaft.

The state in which the reinforcing bar in the state of FIG. 28 is placed in the shaft 15T of the reinforcing bar assembling apparatus 60A of the present invention is the state shown in FIG. In this state, the supporting reinforcing bar 31A is supported by the fixed longitudinal bar supporting means 41L.

FIG. 29 is a conceptual longitudinal sectional view showing a longitudinal bar adding step of the reinforcing bar assembling method using the reinforcing bar assembling apparatus shown in FIGS. Next to the above process, there is a vertical stripe adding process shown in FIG. That is, when the work of suspending the remaining vertical bars 31 sequentially with the crane CR and attaching them to the existing horizontal bars 32 is repeated, the crane CR does not exist in FIG. 29, and this vertical bar adding step is completed.

FIG. 30 shows a horizontal bar adding process of the reinforcing bar assembling method using the reinforcing bar assembling apparatus shown in FIGS. 25 to 27, and (a) and (b) are conceptual vertical sectional views thereof. In the horizontal bar adding step, as shown in FIGS. 30A and 30B, the horizontal bar 32 is taken out from the horizontal bar cage 49A on the stage 48A while the supporting reinforcing bar 31A is supported by the lower fixed vertical bar support means 41L. Then, it is attached to the outside of the vertical bars 31 + 31A at regular intervals.

31 (a) and 31 (b) are conceptual longitudinal sectional views showing the post-transverse post addition process of the reinforcing bar assembling method using the reinforcing bar assembling apparatus shown in FIGS. 25 to 27, and (c) is a state where the reinforcing bars are assembled. FIG. The post-transverse post addition process will be described.

The above horizontal bar adding step can be continued during the lowering stroke of the upper vertical bar support means 41U. When the upper vertical bar support means 41U reaches the lowermost part, the support vertical bar 31A is once moved below the lower vertical bar support means 41U. It is necessary to support the fixed vertical bar support means 41L and raise the upper vertical bar support means 41U to its uppermost portion again. However, when the supporting vertical bar supporting length of the vertical bar supporting means 46A is longer than the mounting pitch of the horizontal bar 32 to the vertical bar 31 (depending on the specifications of the commercial product), the horizontal bar 32 is mounted at a predetermined pitch. The part that cannot be done inevitably occurs.

However, since the specified strength of the reinforcing bars cannot be satisfied, it is necessary to add the horizontal bars to the non-attached portion of the horizontal bars afterwards, which is herein referred to as a horizontal bar post-addition step, which will be described below. In FIG. 31 (a), it is assumed that the portion supported by the longitudinal muscle support means 46A of the fixed longitudinal muscle support means 41L is the lateral muscle non-attached portion.

As shown in FIG. 31 (b), with respect to the portion where the horizontal stripes are not attached, after the upper vertical stripe support means 41U is raised to about three-quarters of the vertical stroke, the vertical stripe support means 46A is used. After supporting the supporting vertical bar 31A, the support of the lower fixed vertical bar supporting means 41L at the vertical bar supporting means 46A is released, and this vertical bar supporting means 46A is separated from the supporting vertical bar 31A, and FIG. So that it is in the position shown in.

In that state, or ascending / descending vertical muscle support means 41U in a state where the supporting vertical muscle 31A is supported is once raised upward, and the horizontal muscle 32 is added to the opened horizontal muscle unattached portion. At this time, if the extra lateral streak 32 is left temporarily below the lateral streak 32 immediately above the portion where the lateral streak is not attached in the transverse streak adding step, this transverse streak adding step can be performed very smoothly.

In addition, in the above process, when the vertical bars 31 need to be added, first, only the supporting vertical bars 31A are added by the same method as described in FIG. Then, the upper and lower support vertical bars 31A are connected, and thereafter, the horizontal bars 32 are attached to the extent that the support vertical bars 31A can maintain the cage-like state (vertical bar addition step). Here, the vertical connection of the supporting vertical bars 31A may be bound by a binding wire or may be welding.

In this way, after the initial process, the vertical bar adding process, the horizontal bar adding process, the vertical bar adding process, and the post horizontal bar adding process are supported by at least one of the vertical vertical bar support means 41U and the fixed vertical bar support means 41L. When the reinforcing bars are assembled to the vicinity of the upper end of the vertical shaft 15T while supporting the vertical bars 31A, the state shown in FIG.

After that, with the rebar pedestal 47D remaining on the bottom of the well, the earth retaining bodies 15 are pulled up one after another and concrete is placed on the exposed part of the well wall, so that the construction of the vertical pile is completed, as shown in FIG. Vertical pile CC can be made. At this time, although it is repeated, since the concrete is directly cast on the exposed portion of the pit wall and solidifies, the circumferential friction of the vertical pile CC is significantly improved.

At the time of the initial placement of concrete, the reinforcing bar pedestal 47D is left at the bottom of the well, so that it becomes heavy and prevents the reinforcement from being lifted by the concrete placement, and ideal concrete placement is performed. Can do.

As can be seen from the above, according to the reinforcing bar assembly device 60A using the vertical shaft of this embodiment, a large crane is not required for hanging the vertical bars, which is an effect of the vertical bar assembling device 60, and the vertical bars It takes advantage of the fact that it does not take up extra space for assembling with the horizontal bars, and enables rebar assembly of the required length even in narrow mountainous areas. In addition, since the supporting vertical bar 31A, which is a part of the vertical bar, is used as the hanging unit, a separate hanging unit becomes unnecessary, and the cost can be reduced accordingly. Moreover, also when there is a restriction | limiting in the clearance gap between the vertical shaft 15T and the reinforcing bar which should be assembled, the effect that the assembly using the vertical shaft of a reinforcing bar can be performed can be exhibited. According to the reinforcing bar assembling method of the present invention, the effect of the reinforcing bar assembling apparatus can be exhibited as an assembling method.

In addition, in the conventional reinforcing bar assembly method, before installing the original vertical bars, temporary vertical bars are installed in the vertical shaft after excavation by welding or the like, and the horizontal bars are temporarily fixed inside the temporary vertical bars. After that, after placing the original vertical streaks inside, binding the vertical streaks and the horizontal streaks, etc., an extra step of removing the provisional vertical streaks was necessary, but in the rebar assembly method of the present invention, Such an extra process becomes unnecessary, and a significant process reduction can be achieved.

Further, in the above conventional reinforcing bar assembling method, it has been necessary to maintain the horizontal bars horizontally and between each other from the inside of the horizontal bars, so it takes time and cannot be performed accurately. However, in the reinforcing bar assembling method of the present invention, the horizontal bar 32 attached to the outside of the original vertical bar 31 (31A) can be performed on the stage 48A or in the work space 51 on the vertical shaft, and the entire circumference of the horizontal bar 32 can be seen. However, since the horizontal and mutual distance can be maintained, it can be accurately performed.

Furthermore, according to the reinforcing bar assembly device 60A using this vertical shaft and the assembling method, the supporting vertical bars 31A are connected to each other by the reinforcing bar connecting means 34 in the vertical direction, and the concrete is firmly integrated from the bottom to the top of the shaft. Since the reinforcing bar connecting means 34 is placed in the inside and functions as a position restricting structure in the vertical and horizontal and front and rear directions in the concrete, the structural strength of the formed vertical pile CC is improved accordingly. It seems to be.

The effect of the reinforcing bar assembly apparatus 60A using the vertical shaft and the assembly method is also exhibited in the vertical pile construction method using these.

<Ninth Embodiment>
Fig.32 (a) is a principal part longitudinal cross-sectional view which shows the other example of the vertical hole excavation apparatus used with the vertical pile construction method using the reinforcing bar assembly method of this invention, (b) shows a commercially available electric backhoe. FIG. The vertical hole excavation method shown in FIG. 32 uses a part of a commercially available electric backhoe as the vertical hole excavator 20A instead of the vertical hole excavator 20 described with reference to FIGS.

As shown in FIG. 32 (b), this electric backhoe type vertical hole excavator 20A has a crawler portion for horizontal movement and a swivel portion (two-dot chain line) connected to this crawl portion from a commercially available electric backhoe DB. The main body 77 from which the above-mentioned is removed is installed on the movable table 4 of the vertical hole excavator 20. The electric backhoe-type vertical hole drilling device 20A also includes a double-ended bucket 6A similar to the vertical hole drilling device 20, a crusher 8A, and a strong suction cylinder 10A connected to the crusher 8A. Drilling can be performed.

With such a configuration, the excavation method using the electric backhoe type vertical hole excavator 20A exhibits the same effects as the excavation method when the vertical hole excavator 20 is used, and the main body of a commercial product. Since the portion 77 can be used as it is, the effect that the manufacturing of the excavator 20A is simplified is exhibited.

FIG. 33 is a longitudinal sectional view of an essential part showing another example of the vertical hole excavating device used in the vertical pile construction method using the reinforcing bar assembling method of the present invention. The vertical hole excavation method shown in FIG. 33 uses a commercially available electric backhoe type vertical hole excavator 20B instead of the vertical hole excavator 20 described with reference to FIGS.

This electric backhoe type vertical hole excavator 20B is a commercial product as it is, and includes a crusher 8B similar to the vertical hole excavator 20 described in FIGS. 10 to 15 and a strong suction cylinder 10B connected to the crusher 8B. It is possible to drill a vertical shaft.

With such a configuration, the excavation method using the electric backhoe type vertical hole excavator 20B exhibits the same effect as the excavation method when the vertical hole excavator 20 is used, and a commercially available product is used as it is. Since it can be used, the production of the excavator 20B becomes very simple.

The vertical hole drilling apparatuses 20A and 20B described here, the vertical hole drilling apparatus 20 described above, and the vertical hole drilling unit 74 described with reference to FIG. It can be combined with any of the rebar assembly methods using any one of the eight shafts, and in that case, the respective effects are synergistically exhibited.

In addition, the reinforcing bar assembly apparatus using the vertical shaft of the present invention, the reinforcing bar assembly method using the vertical shaft, and the vertical pile construction method using this method are not limited to the above embodiment, but in the scope of the claims. Various modifications and combinations are possible within the scope described and the scope of the embodiments, and these modifications and combinations are also included in the scope of the right, and these combinations are the effects of the individual parts to be combined. Can be exhibited synergistically.

For example, as for the lifting hydraulic cylinder, it is not necessary to divert the connection / disconnection mechanism 13 used in the earth retaining body setting recovery type vertical pile construction system described in Patent Document 2, or a vertical shaft is used. It may be a hydraulic cylinder with a check valve that is used exclusively in a reinforcing bar assembling apparatus. Further, the fixed base hole 30 is not limited to that of Patent Document 2.

Moreover, although the example of the double reinforcing bar was shown in FIG. 9, the reinforcing bar assembly apparatus and assembly method using the vertical shaft of the present invention can be similarly used for a triple reinforcing bar or more. Moreover, the apparatus which excavates using the descent of the earth retaining body is not limited to the apparatus demonstrated here, The vertical hole excavation unit of patent 40225570 gazette, the excavation tool of the patent 3965421, excavation apparatus, patent A vertical hole excavation unit described in Japanese Patent No. 4022257, a vertical excavation device using an earth auger disclosed in Japanese Patent No. 4000004, or other conventional manual digging or excavation devices may be used.

The rebar assembly device using the vertical shaft of the present invention, the rebar assembly method using the vertical shaft, and the vertical pile construction method using this method do not require a large crane for hanging the vertical bars, and Buildings such as power transmission towers, bridges, and elevated railways that do not take up extra space for assembling the bars and horizontal bars and are required to be able to assemble reinforcing bars of the required length even in narrow mountainous areas It can be used in civil engineering-related industrial fields such as constructing strong foundation vertical piles.

Claims (1)

When assembling a reinforcing bar composed of vertical and horizontal bars provided in a vertical shaft after excavation, this is a rebar assembly device using a vertical shaft that uses this vertical shaft,
Reinforcing bar suspension means that can suspend the vertical bars supplied by hanging with a crane and the horizontal bars to be assembled to them until the end of rebar assembly,
The reinforcing bar suspending means is fixedly supported at least at the tip of a part of the lowermost vertical bar, and can removably attach a reinforcing bar receiving other vertical bars and a supporting vertical bar fixedly supported by the reinforcing bar support At least two sets of vertical bar supporting means are provided on the upper and lower sides, one vertical bar supporting means being fixed vertical bar supporting means fixed to the upper part of the vertical shaft, and the other vertical bar supporting means being the vertical bar supporting means. It is an elevating vertical muscle support means that is above the pit and is capable of elevating and being fixed to the end of the elevating means,
At least one of the said fixed longitudinal muscle support means the elevating longitudinal muscle support means, while supporting the supporting longitudinal muscle, Ru assembling rebar up and down elevator until downhole cradle iron muscle from above of the shafts using the iron muscle assembly equipment,
It is a method of excavating vertical holes and constructing vertical piles while lowering the earth retaining bodies sequentially,
Drilling a vertical hole with a vertical hole drilling device;
In the vertical shaft formed in this way, the required length is obtained by the reinforcing bar assembly method in which the supporting vertical bars are supported by the reinforcing bar hanging means, and the horizontal bars and the vertical bars are sequentially added to assemble the reinforcing bars of the required length. The process of installing the rebar of
A process of constructing a vertical pile by placing concrete directly into a vertical hole without a debris, while pulling up the debris sequentially while leaving the reinforcing bar cradle at the bottom
A vertical pile construction method characterized by comprising

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