JP2004278131A - Pile supporting device for batter pile construction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably and positively perform inclined support in batter pile construction by combining a novel pile supporting device for batter pile construction with a back hoe of excellent mobility. <P>SOLUTION: This pile supporting device for batter pile construction is constituted to support a batter pile 1 in an inclined state in allowing the batter pile 1 to penetrate the ground 5, and a batter pile support tool 15 is detachably mounted to the back hoe 8. The batter pile support tool 15 comprises a tool body 17 extended along the longitudinal direction of the pile and detachable from a power shovel mounting arm 9 of the back hoe 8, and a support member 18 provided at the tool body 17 and used also for bracing the batter pile. The support member 18 is formed in curved shape surrounding the periphery of the batter pile 1, and its inner support surface is provided with a movability accelerating mechanism for the batter pile 1 such as a ball bearing 25. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to various types of slopes such as rotary press-fit steel pipe piles that are pressed into the ground to support structures such as towers, roads and bridges, or structures such as buildings, and piles that are cast with a bi-block hammer. The present invention relates to a pile support device for slanted pile construction for constructing piles.
[0002]
[Prior art]
There are two types of pile construction methods: a method of placing a pile head with a hammer, which has been generally used for a long time, and a relatively recent technique of rotary press-fitting using a rotary press-fit steel pipe pile. In addition, there are cases where the pile is vertically driven or rotationally press-fitted into the ground, and where the pile is driven or press-fitted with an inclination.
[0003]
Both the method of constructing a slanted pile using the hammer and the method of constructing a slanted pile using a rotary press-fit steel pipe pile have problems in adjusting the angle of the slanted pile and supporting it in an inclined manner, and will be described below.
[0004]
Regarding the method of placing a slanted pile with a hammer, there is a prior art disclosed in Japanese Patent Application Laid-Open No. H11-81309 (Patent Document 1). This Patent Literature 1 discloses (1) a construction method in which a slanted pile is inclined and supported by a crane arranged on a yagler and a hammer is applied to the pile head with a hammer. In addition, (2) a support pile is vertically driven separately from the slant pile, a horizontal adjustment mechanism comprising a cylinder is provided at the upper end thereof, and the slant pile is inclined and supported at a predetermined angle by a holding arm provided on the cylinder. A construction method of hitting a pile head with a hammer is disclosed.
[0005]
In the case of the method of (1), in which a slanted pile is constructed by using a hammer, a large crane is required to install a crane and the equipment is large, and there is no device for properly supporting the slanted pile on the crane. become. In addition, in the case of supporting the slant pile at the upper end of the support pile of the above (2), it is necessary to cast the support pile separately from the slant pile, and there is a problem that it takes time to construct the slant pile. Further, since both the methods (1) and (2) are of a fixed type in which the support means of the inclined pile is installed on the ground, the supporting structure is not suitable for the construction of a large number of inclined piles as the place is moved.
[0006]
Since the technology of rotating press-fit steel pipe piles is a recent technology, there is no open technology for the method of constructing the piles as slant piles. As the press-fitting device for the rotary press-fitting steel pipe pile, an all-slewing all-casing machine is generally used. The all-slewing all-casing machine applies a rotational pressure input while tightening and gripping the periphery of a steel pipe pile. Therefore, when installing a rotary press-fit steel pipe pile as a slanted pile, it is difficult to perform the rotary press-fitting work while tilting the slanted pile and the all-slewing all-casing machine while adjusting the angle of the slanted pile. The situation tends to be unstable, which makes it difficult to manage the pile inclination at the time of the joint pile, and requires a tilt support device.
[0007]
[Patent Document 1]
JP-A-11-81309
[Problems to be solved by the invention]
Regardless of the method of placing slanted piles with a hammer and the method of slanting piles with a rotary press-fit steel pipe pile, the conventional support method makes the inclined piles unstable and difficult to support. Construction is difficult, and there is a problem that construction takes time, construction accuracy and construction efficiency are reduced.
[0009]
The present invention provides a pile support device for constructing a slanted pile that can smoothly support the slanted pile when constructing the slanted pile, and in particular, there are various types from small machines to large machines, mobility, The conventional problem is solved by combining the inclined pile support of the present invention with a backhoe excellent in mobility.
[0010]
[Means for Solving the Problems]
To achieve the above object, the present invention is configured as follows.
[0011]
According to a first aspect of the present invention, there is provided a pile support device for mounting a slanted pile, wherein a slanted pile support jig for tilting and supporting the slanted pile is attached to a backhoe when the slanted pile penetrates into the ground. A jig main body along the longitudinal direction of the pile, an oblique pile steadying / supporting member provided on the front side of the jig main body, and a rear face of the jig main body, and a power shovel mounting arm of the backhoe. And a jig body attaching member which is detachable.
[0012]
A second aspect of the present invention is characterized in that the slanted pile steady rest and support member according to the first aspect of the invention has a curved shape surrounding the periphery of the slanted pile, and has a mechanism for facilitating the movement of the slanted pile on an inner support surface thereof. And
[0013]
A third invention is characterized in that the movement promoting mechanism in the second invention is constituted by any one of a ball bearing, a rotating roller, and a low friction sliding surface.
[0014]
According to a fourth aspect of the present invention, in the first to third aspects, the jig body attachment member is attached to the back surface of the jig body so as to be adjustable in position.
[0015]
According to a fifth aspect of the present invention, as the mounting position adjusting means in the fourth aspect, one or both of the bolt insertion holes provided at the joints of the jig main body and the jig main body mounting member are vertically elongated slots. A bolt is inserted through the bolt insertion hole.
[0016]
In a sixth aspect based on the first to third aspects, the jig main body along the pile longitudinal direction is divided into upper and lower portions, and each of the upper and lower divided members bolts a joint portion slidably overlapped up and down. The upper and lower divided members are joined so as to be adjustable by joining, and the slanted pile steadying and supporting member and the jig body attaching member are provided on each of the upper and lower divided members.
[0017]
[Action]
The pile support device for slant pile construction according to the present invention is provided with a slant pile support jig that has a simple configuration and can stably support the slant pile, and there are various types of slant pile support jigs from small machines to large machines. Since it is configured to be detachably attached to the power shovel mounting arm of the backhoe with excellent mobility and mobility, it is possible to easily and accurately adjust the inclination angle of the inclined pile using the characteristics of the backhoe. It is possible to perform pile inclination management at the time of joint pile smoothly. In addition, since the pile support device for constructing a slanted pile can be quickly moved by the backhoe, the workability is significantly improved when a large number of slanted piles are constructed in different places. Furthermore, by configuring the inclined pile support jig so as to be adjustable and attachable to the mounting arms of the large and small backhoes, it is possible to make the most of the advantage of the variety of combinations with the large and small backhoes, Accordingly, the workability is further increased, and effects such as a reduction in a construction period and a construction cost can be achieved.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
FIG. 1 is a side explanatory view showing an embodiment in which a slant pile is press-fitted by a backhoe to which a slant pile support jig according to the present invention is attached, and FIG. 2 is a side view of a slant pile support jig which is a main part of the present invention. FIG. 3 is a front view and a rear view of the jig main body along the pile longitudinal direction in the oblique pile support jig, FIG. 4 (a) is a view of an arrow A portion of FIG. 2, and FIG. FIG. 5C is a plan view of FIG. 2, showing the support member that also serves as the slanted pile steady rest.
[0020]
In FIG. 1, an inclined pile 1 is a rotary press-fit steel pipe pile having rotating blades at the tip of a steel pipe, and a full-turn all-casing machine 4 is installed at the lower end of the inclined pile 1 as a rotary press-fitting device. The figure shows a state in which the inclined pile 1 and the all-turn all-casing machine 4 are installed on an inclined plane. Therefore, both are suspended by the hanging ropes 3 of the crane 2 and are temporarily held in an inclined state. [0021]
In the above case, the all-slewing all-casing machine 4 needs to be arranged to be inclined in accordance with the inclination of the slant pile 1, and therefore, one or a plurality of The inclination is maintained by disposing the inclined base 6. The disposition of the inclined gantry 6 is performed by using the illustrated horizontal holding table 7, and the disposing step will be described later with reference to FIG.
[0022]
In FIG. 1, when the all-slewing all-casing machine 4 is tilted by the tilting base 6 and the slanted pile 1 is rotationally press-fitted in this mode, the slanted pile 1 is tilted and unstable, so a tilting support mechanism is required, In particular, a tilt support mechanism is required for managing the pile tilt at the time of joint piles. In the present invention, a slanted pile support jig 15 is detachably attached to the power shovel mounting arm 9 of the backhoe 8 to constitute a pile inclined support device capable of supporting the slanted pile 1 rotatably and slidably in the pile axis direction. I have.
[0023]
The backhoe 8 includes a traveling device 10, and a first arm 12 whose angle can be adjusted is provided on a main body 11 that is rotatable horizontally, and the excavator mounting arm 9 is provided at a tip of the first arm 12 as a second arm. Are provided so as to be rotatable up and down around the support shaft 13. At the lower end of the power shovel mounting arm 9, a power shovel is detachably provided via a connecting shaft 14, but the power shovel is removed when the slant pile support jig 15 is mounted as shown in the figure.
[0024]
The configuration of the inclined pile support jig 15 is shown in FIGS. Referring to the drawings, the slanted pile support jig 15 includes a jig main body 17 extending in the longitudinal direction of the sled pile 1 when the slanted pile 1 is supported, and a slanted pile runout provided on a front side of the jig main body 17. It comprises a stop / support member 18 and a jig body attachment member 19 provided on the back of the jig body 17 and detachably attached to the power shovel attachment arm 9 of the backhoe 8.
[0025]
The jig body 17 cuts, for example, a long H-shaped steel into a predetermined length, and provides a reinforcing rib at a portion where reinforcement is required. A plurality is provided above and below at predetermined intervals. In the case shown in the drawing, the slant pile anti-sway / support member 18 is attached to the upper, middle, and lower portions. Further, the jig body attachment member 19, which is obtained by cutting the H-section steel into a predetermined short dimension and performing necessary reinforcement with a reinforcement rib, is attached to the rear flange 21.
[0026]
As shown in FIG. 5 (a), the inclined pile steady rest supporting member 18 is constructed by assembling a steel material into a plane curved shape so as to surround the periphery of the inclined pile 1, and the back surface is reinforced by the reinforcing rib 22. At the same time, the joining member 16 at the center of the back surface is applied to the front flange 20 of the jig main body 17, and the contact portion is joined by the bolt joining portion 24. The slant pile steadying support member 18 is provided at three places in the upper part, the middle part and the lower part of the front side of the jig body 17.
[0027]
The inclined pile steady rest supporting member 18 supports the inclined pile 1 rotatably and slidably in the axial direction. In order to make the movement smooth, the inclined pile 1 is supported on the inner support surface of the steady rest dual purpose supporting member 18. It is preferable to provide a movement promoting mechanism. In the embodiment shown in FIG. 5A, a plurality of unit-type ball bearings 25 are arranged along the circumferential direction of the inner support surface of the steady rest / support member 18. In the case of the present embodiment, since the inclined pile 1 is a rotary press-fit steel pipe pile, the inner support surface requires both horizontal rotation and vertical rotation of the pile, and the ball bearing 25 is used in this relation. When the slanted pile is inclined and supported in the hammer casting method, the slanted pile does not rotate, and therefore, a roll bearing having a rotating shaft arranged horizontally can be used on the inner support surface of the steady rest and support member 18 (about this). Is not shown).
[0028]
Further, as shown in FIG. 5 (b), the steady rest supporting member 18 of the inclined pile 1 is formed by cutting a circular steel pipe having a predetermined diameter into a predetermined length, and further cutting the steel pipe into a curved shape at a predetermined angle. The back surface may be fixed to the front part of the jig main body 17 via the joint member 23 with the bolt joint 24. In this embodiment, a mechanical movement promoting mechanism such as a ball bearing is not provided.However, if necessary, a member having a small frictional resistance and being slippery, for example, a movement promoting portion formed of a layer of a fluororesin or the like may be formed. Thereby, the rotation and the axial movement of the inclined pile 1 are further smoothed.
[0029]
2 and 3, a bolt insertion hole 26 is provided in a flat joint between the rear flange 21 of the jig main body 17 and the jig main body attachment member 19 along the pile longitudinal direction, and a bolt inserted into the bolt insertion hole 26 is provided. The two members are removably connected to each other by a bolt joint portion 27 formed by fastening a nut to the nut. In this case, one or both of the rear flange 21 side of the bolt joint portion 27 and the bolt insertion hole 26 of the jig body attachment member 19 are vertically elongated holes, and the jig body attachment member 19 is connected to the jig body 17. The jig 15 can be attached to the backhoe 8 of various sizes, in accordance with the length of the power shovel mounting arm 9 in the backhoe 8 of various sizes.
[0030]
As shown in the drawing, the jig main body mounting member 19 and the power shovel mounting arm 9 are mounted on the lower jig main body mounting member 19 by using a connecting shaft 14 for mounting the power shovel. The jig body attachment member 19 is attached to a connection shaft 33 provided on a support portion 32 of the power shovel attachment arm 9 (see FIG. 2).
[0031]
Therefore, by attaching the jig body attachment member 19 to the jig body 17 via the long holes so as to be freely adjustable, as described above, the connection shaft 33 of the power shovel attachment arm 9 can be connected to the large and small backhoes 8. When the distance between the connecting shafts 14 is different, the mounting position of the jig body mounting member 19 with respect to the jig body 17 can be adjusted so that the connecting shafts 33 and the connecting shafts 14 having the different distances can be accommodated. The pile support jig 15 can be applied to various backhoes 8 of various sizes.
[0032]
Although not shown, as another means for adjusting and attaching the inclined pile support jig 15 to the various backhoes 8 of large and small sizes, the jig body 17 along the pile longitudinal direction is divided into upper and lower parts. The joints vertically slidably overlapped are joined by bolting so that the vertical position can be adjusted freely, and the upper and lower divided members are provided with a slant pile anti-swing / supporting member 18 and a jig body attaching member 19. May be configured. In this case, even if the jig main body attaching member 19 is fixed to the upper and lower divided members in a non-adjustable manner, one kind of slant pile supporting jig 15 can be applied to various types of backhoes 8.
[0033]
Next, the construction process of the inclined pile according to the present invention will be described. FIGS. 6A, 6B, and 6C show first, second, and third steps of rotationally press-into a diagonal pile into the ground using a diagonal pile construction pile support device, and FIG. ) And (b) show the fourth and fifth steps, and FIGS. 8 (a) and (b) show the sixth and seventh steps.
[0034]
In FIG. 6 (a), a fully swiveling all-casing machine 4 is arranged below the slant pile 1, which is a rotary press-fitting steel pipe pile, and a plurality of inclined mounts 6 are arranged below the fully swiveling all-casing machine 4. And the jack 30 are used to install the slanted pile 1 and the all-slewing all-casing machine 4 on a predetermined pile installation ground 5 in a state of being held vertically (first step). Next, in FIG. 6B, by removing the jack 30, the inclined pile 1 and the all-turn all-casing machine 4 are inclined by the inclined stand 6, and at the same time, the backhoe 8 to which the inclined pile supporting jig 15 is attached is moved to the position shown in FIG. To a standby state (second step).
[0035]
Next, in FIG. 6C, a counterweight (shown by oblique lines) 31 is installed below the all-casing machine 4 and on the side opposite to the inclined side of the inclined pile 1 (third step). Next, in FIG. 7A, a reaction force bar 34 is installed on the opposite side of the counterweight (shown by oblique lines) 32 (fourth step). Next, in FIG. 7B, after adjusting the power shovel mounting arm 9 of the backhoe 8 to a predetermined angle and fixing the slant pile support jig 15, the slant pile support jig 15 fixes the slant pile 1 to a predetermined angle. Support at an angle (fifth step).
[0036]
Next, in FIG. 8A, the end of the reaction force bar 34 is fixed by the crawler crane 2 (sixth step). Next, in FIG. 8B, the power shovel mounting arm 9 of the backhoe 8 fixed to the slant pile support jig 15 is operated to adjust the tilt angle of the slant pile 1 and press-fit the ground 5 with the ground. At the same time, even during the construction, the backhoe 8 is operated as necessary to perform the press-fitting operation while continuously adjusting the angle of the inclined pile 1 (seventh step).
[0037]
Although the embodiment and the operation mode have been described above, the present invention may be implemented by appropriately changing the design of the above configuration.
[0038]
【The invention's effect】
The pile support device for slant pile construction according to the present invention is provided with a slant pile support jig that has a simple configuration and can stably support the slant pile, and there are various types of slant pile support jigs from small machines to large machines. Because it is configured to be detachably attached to the excavator mounting arm of the backhoe with excellent mobility and mobility, it is possible to easily and accurately adjust the inclination angle of the inclined pile using the characteristics of the backhoe. It is possible to control pile inclination at the time of joint piles. In addition, since the pile support device for constructing a slanted pile can be quickly moved by the backhoe, the workability is significantly improved when many slanted piles are constructed in different places. Furthermore, by configuring the inclined pile support jig so as to be adjustable and attachable to the mounting arms of the large and small backhoes, it is possible to make the most of the advantage of the variety of combinations with the large and small backhoes, Accordingly, the workability is further increased, and effects such as a reduction in a construction period and a construction cost can be achieved.
[Brief description of the drawings]
FIG. 1 is an explanatory side view showing a mode in which a slant pile is press-fitted with a backhoe to which a pile support device for slant pile construction according to an embodiment of the present invention is attached.
FIG. 2 is a side view of a slant pile support jig which is a main part of the present invention.
3A and 3B are a front view and a rear view of a jig main body along a pile longitudinal direction in a slanted pile support jig.
4A is a diagram of a portion viewed from an arrow A in FIG. 2, FIG. 4B is a diagram of a portion viewed from an arrow B, and FIG.
5 (a) is a plan view of FIG. 2 showing a slanted pile steadying / supporting member, and FIG. 5 (b) is a plan view of another example of a slanted pile steadying / supporting member.
FIGS. 6 (a), (b), and (c) show first, second, and third steps of press-fitting a diagonal pile into the ground using the pile support device for diagonal pile construction according to the present invention. FIG.
FIGS. 7 (a) and 7 (b) are process diagrams showing fourth and fifth steps of rotationally pressing a slant pile into the ground using the pile support device for slant pile construction according to the present invention.
8 (a) and 8 (b) are process diagrams showing sixth and seventh steps of rotationally press-into a diagonal pile into the ground using the diagonal pile construction pile support device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sloping pile 2 Crane 3 Suspension rope 4 Full-turn all casing machine 5 Ground 6 Inclined pedestal 7 Horizontal holding stand 8 Backhoe 9 Power shovel mounting arm 10 Traveling device 11 Main body 12 First arm 13 Support shaft 14 Connecting shaft 15 Jig 16 Joining member 17 Jig body 18 Skew pile steadying support member 19 Jig body attaching member 20 Front flange 21 Rear flange 22 Reinforcement rib 23 Joining member 24 Bolt joint 25 Ball bearing 26 Bolt insertion hole 27 Bolt joint Part 28 inclined base 29 horizontal holder 30 jack 31 counterweight 32 support part 33 connecting shaft 34 reaction force bar

Claims (6)

When penetrating the slant pile into the ground, a slant pile support jig for supporting the slant pile in an inclined manner, the slant pile support jig is attached to a backhoe, and the slant pile support jig is arranged in the pile longitudinal direction. A jig body along the jig body, a swash pile anti-sway / support member provided on the front side of the jig body, and a jig provided on the back of the jig body and detachable from a power shovel mounting arm of the backhoe. A pile support device for slanted pile construction, comprising a main body mounting member. The slanted pile construction according to claim 1, wherein the slanted pile steadying / supporting member has a curved shape surrounding the periphery of the slanted pile, and has a mechanism for promoting the movement of the slanted pile on an inner support surface thereof. For pile support. The pile support device for slant pile construction according to claim 2, wherein the movable acceleration mechanism is configured by one of a ball bearing, a rotating roller, and a low friction sliding surface. The pile support device for slant pile construction according to any one of claims 1 to 3, wherein the jig body attachment member is attached to a rear portion of the jig body so as to be adjustable in position. The mounting position adjusting means according to claim 4, wherein one or both of the bolt insertion holes provided at the respective joints of the jig body and the jig body mounting member are vertically elongated holes, and A pile support device for constructing a slanted pile, wherein the device is constructed by inserting bolts. The jig body along the pile longitudinal direction is divided into upper and lower parts, and each of the upper and lower divided members is joined by bolting joints slidably overlapped vertically so that the vertical position can be adjusted freely, and The pile support device for slant pile construction according to any one of claims 1 to 3, wherein the divided pile member is provided with the slant pile steadying support member and a jig body attachment member.

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