JP2009161980A - Earth retaining object installation and collecting type foundation vertical pile construction system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earth retaining object for excavation capable of eliminating the need of pressing, from the ground, a hydraulic shovel and a telescopic device placed on the ground and enabling the excavation and cracking with necessary pressing forces. <P>SOLUTION: In this earth retaining object 10 for excavation to which a reaction force is applied by a fixed foundation hole, at least one of excavating means DM such as a sucking excavating device, a sucking excavating device 7 with a rock drill, a sucking earth auger, and a rock drill 6 is detachably or replaceably installed so as to be movable in the circumferential direction of the earth retaining object 10 for excavation, tiltable or fixed in the excavating direction, or movably or fixed in the radial direction of the earth retaining object 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a earth retaining body installation step in which the earth retaining body is pushed down in order by a separation mechanism fixed to the fixed base hole, and the earth retaining structure in which the concrete is placed while being pulled out and collected. The earth retaining body for excavation that can be used in the deepest part of the earth retaining body used in the recovery-type foundation vertical pile construction system that implements the body recovery process, and the foundation vertical pile construction system that uses this earth retaining body for excavation About.

  Buildings such as steel towers for transmission lines require strong foundation vertical piles on the foundation. The foundation vertical pile construction work is often done in an inconvenient place in a mountainous area, and it is desirable that the equipment and equipment to be used are as small as possible and easy to carry and install, and to the surrounding environment as much as possible during construction. After construction, it is necessary to completely remove everything except the main building.

  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 the techniques of the patent inventions described in Patent Documents 1 to 4 in order to solve such problems.

  The shaft excavation method and excavation apparatus using an earth auger described in Patent Document 1 are the same as the drilling and excavation at the shaft bottom by attaching the earth auger to the tip of a telescopic arm that is attached to the tip of a boom of a hydraulic excavator. It replaces the clam shell at the end of the boom and enables scraping and unloading of soil after excavation from the ground, making it difficult for workers at the bottom of the shaft to work in adverse environments. is there.

  The construction method and construction device for the earth retaining body described in Patent Document 2 are configured to install the earth retaining body in the downward direction in order using the separation and attachment mechanism installed on the fixed base, and after the completion of this installation process, Using the same separation and connection mechanism, it is possible to perform a recovery process in which concrete is placed while sequentially recovering the earth retaining body, and it is possible to reuse the earth retaining body that has remained in the soil. This greatly contributes to resource saving.

  The drilling tool and shaft excavation system described in Patent Document 3 is provided with a central shaft that rotates the drill tip for drilling simultaneously and the tip of the cylinder, a non-rotating lid is attached to the rear end of the cylinder, and a suction duct is installed in the lid Thus, it is possible to perform suction and discharge while excavating debris, and is a further evolution of the technique of Patent Document 1.

  The vertical shaft excavation unit and the vertical shaft excavation system described in Patent Document 4 are a combination of the excavator of Patent Document 4 with a rock drill so that rock, excavation, and debris can be discharged even with a harder rock mass.

However, in any of the above technologies, when excavating, it is necessary to press and move the excavator with a hydraulic excavator placed on the ground and a telescopic attached to the tip of the boom. When the depth becomes deeper and the telescopic length becomes longer, the movement and positioning become difficult, and a solution has been desired.
Japanese Patent No. 4000004 (FIG. 1) Japanese Patent No. 3947976 (FIGS. 1 to 4) Japanese Patent No. 3965421 (FIGS. 1 and 4) Japanese Patent No. 40222570 (FIGS. 1, 2, 5, and 6)

  The present invention is intended to ameliorate the above-mentioned problem, and excavation and retaining rocks that enable excavation and rock formation with necessary pressing force without the need to press from the ground such as a hydraulic excavator and telescopic on the ground when excavating. An object of the present invention is to provide a body and a foundation vertical pile construction system using the excavated earth retaining body.

The earth retaining body for excavation according to the present invention includes an earth retaining body installation process in which the earth retaining body is pushed down in order by a separation mechanism fixed to the fixed base hole, and the concrete is removed while being pulled out and collected in order. The earth retaining body for excavation that can be used in the deepest part of the earth retaining body used in the earth retaining body installation recovery-type vertical pile construction system that realizes the earth retaining body collecting process to be placed,
At least one of excavation means such as a suction excavator, a suction excavator with a rock drill, a suction earth auger, and a rock drill can be moved in the circumferential direction of the excavation retaining body, or and / or The excavation direction can be tilted or fixed, or and / or the radial position of the excavation retaining body can be moved or fixed, and can be installed detachably.

  The foundation vertical pile construction system of the present invention is characterized by using the above earth retaining body for excavation.

According to the earth retaining body for excavation of the present invention, the earth retaining body installation process in which the earth retaining body is pushed down in order by the separation / contact mechanism fixed to the fixed base hole, and the earth retaining body is pulled out and collected in order. The earth retaining body for excavation that can be used in the deepest part of the earth retaining body used in the earth retaining body installation recovery-type vertical pile construction system that realizes the earth retaining body collecting process for placing concrete,
At least one of excavation means such as a suction excavator, a suction excavator with a rock drill, a suction earth auger, and a rock drill can be moved in the circumferential direction of the excavation retaining body, or and / or Since the excavation direction can be tilted or fixed, and / or the radial position of the excavation earth retaining body can be moved or fixed, the excavation earth retaining body itself is fixed. Since the reaction force from the foundation hole can be received and a pressing force can be applied to the excavation means attached to it, the necessary pressing force is not required for excavation on the ground, such as a hydraulic excavator and telescopic on the ground. You can excavate and rock.

  Since the foundation vertical pile construction system of the present invention uses the excavation earth retaining body, the effect of the excavation earth retaining body can be exhibited as the foundation vertical pile construction system.

Embodiments of the present invention will be described below with reference to the drawings.
<Embodiment 1>
FIG. 1 shows an example of an earth retaining body for excavation according to the present invention. FIG. 1 (a) is a top view thereof, FIG. 1 (b) is a detailed view of a main part A in FIG. 1 (a), and FIG. It is a front view of a partial fracture.

  The excavating earth retaining body 10 corresponds to the earth retaining body construction apparatus described in Patent Document 2, and is installed by pushing down the earth retaining body in order by a separating mechanism fixed to the fixed base hole. In the deepest part of the earth retaining body used in the earth retaining body installation recovery type vertical pile construction system, which realizes the process and the earth retaining body collecting step of placing concrete while pulling out and collecting the earth retaining body in order It is the earth retaining body 10 for excavation which can be used.

  The features of the earth retaining body 10 for excavation include a suction excavator 8 (see FIG. 12), a suction excavator 7 with a rock drill, a suction earth auger 9 (see FIG. 12), a rock drill 6 and the like. At least one of the excavation means (DM) can be moved in the circumferential direction of the excavation retaining body 10 and / or its excavation direction can be tilted or fixed, or and / or The position in the radial direction can be moved or fixed, and can be installed so as to be removable.

  In this way, the fixed foundation hole 30 firmly fixed to such an extent that the earth retaining body 10 for excavation itself can be installed and recovered (pressed down and pulled up) by the separating mechanism 13 with respect to the ground E (both of them). Refer to Fig. 2. Basically, it has the same configuration as that of Patent Document 2.) Since the pressing force is received, the excavation means (DM) is suitably pressed and excavated using the pressing force. Can cause rocks.

  That is, according to this excavation earth retaining member 10, excavation means (DM) installed therein excavates with a necessary pressing force without the need to press from the ground such as a hydraulic excavator and telescopic on the ground during excavation. The rock can be made possible. This will be described in more detail below.

  The earth retaining body 10 for excavation has at least the outer diameter of the earth retaining body main body 1 having the same outer diameter as that of the ordinary earth retaining body 11, and the support ring 2 detachably installed on the inner peripheral wall of the earth retaining body main body 1. A radial support beam 3 rotatably installed on the support ring 2, a fixed support 4 fixed to one end in the longitudinal direction of the radial support beam 3, and a diameter on the radial support beam 3. And a movable support 5 supported so as to be movable in the direction.

  In this example, a rock drill 6 is installed on the fixed support 4 and a suction drilling tool 7 with a rock drill is installed on the moving support 5 as the excavating means DM.

  In this example, the earth retaining body main body 1 is thicker than the other earth retaining bodies 11 (see FIG. 2 and FIG. 2 of Patent Document 2) having a thin steel frame structure. It is made of real steel and is heavier than the earth retaining body 11.

  In this way, only the weight can assist the pressing force that gives the excavation force to the excavation means DM installed in the excavation earth retaining body 10, and the weight (more precisely, the mass) can be used for excavation and dredging. The influence of vibration associated with rocks can be reduced.

  In order to increase the weight of the main body 1, the main body 1 is simply made of a solid cylindrical steel with the same inner and outer diameter as the normal main body 11, and its length is made longer than that of the normal main body. Alternatively, the inner diameter may be reduced, or the weight may be separately detachably or fixedly fixed.

  On the support ring 2, a radial support beam 3 is mounted so as to be rotatable in the circumferential direction. For this purpose, the support ring 2 is installed at both ends of the radial support beam 3 composed of two parallel square steel pipes. And a pair of left and right rotating rollers 3c attached to the roller supporting plate 3b so as to rotate by sandwiching the supporting ring 2 from above and below.

  The support ring 2 includes a roller chain 2a attached to the inner peripheral wall of the retaining body 1 below the support ring 2 so as to be detachable, a sprocket 2b meshing with the roller chain 2a, A rotating means 2c for rotating the sprocket 2b at an appropriate speed and a rotating means support plate 2d for supporting and installing the rotating means 2c on the roller support plate 3b are provided.

  The parts necessary for rotating the radial support beam 3 on the support ring 2 are provided in pairs at positions symmetrical to the radial support beam 3 as shown in FIG. ing. Further, the radial support beam 3 made of this square steel pipe has its internal space used as a hydraulic tank, and hydraulic oil of this hydraulic tank is supplied to the rotational drive means 2c and the like on one side surface of the radial support beam 3. A hydraulic pump 3d for supplying (including a control valve and the like) is provided.

  As described above, the radial support beam 3 has two square steel pipes generally used as a building structure material mounted on the support ring 2 in parallel, and with respect to the support ring 2, the earth retaining body main body 1 has the above-described configuration. It is possible to turn inside.

  The fixed support 4 is fixed between the two square steel pipes of the radial support beam 3 in a both-side supported state. The moving support 5 is a pair of racks 3 a provided on the upper surface of the radial support beam 3, and a pair of gears engaged with the rack 3 a and rotated by rotating means (not shown) built in the moving support 5. The pinion gear 5a and a pair of left and right rollers 5b supported by the movable support 5 and rotating in contact with the inner upper side of the square steel pipe of the radial support beam 3 are supported so as to be movable in the radial direction in a both-end supported state. .

  A rock drill (excavation means) 6 (DM) supported by the fixed support 4 so as to be detachable and replaceable, as indicated by an imaginary line of a two-dot chain line, directly below the rock formation or at the center of the earth retaining body 1 Can be tilted to the outer and outer sides. That is, as a result, as shown in FIGS. 3 to 5, the diameter-enlarged bottom hole EA required for the diameter-enlarged bottom 34 </ b> A required for the foundation vertical pile 35 can be excavated.

  Since the rock drilling suction digging tool (digging means) 7 (DM) supported on the movable support 5 in a detachable and replaceable manner is the same as that described in Patent Document 4 (FIGS. 1 and 2), Although a detailed description is omitted, a central rock rod 7a, a cylindrical excavation drill tip 7b, and a suction discharge port 7c for sucking and discharging the rock and the excavated debris are provided.

  Hereafter, the construction process of the earth retaining body installation collection type | formula vertical pile construction system using the earth retaining body 10 for excavation of such a structure is demonstrated.

  FIG. 2 shows the construction process by the earth retaining body setting recovery type vertical pile construction system using the earth retaining body for excavation in FIG. 1 in order. (A), (b) shows the earth retaining body while excavating. It is sectional drawing which shows the process currently installed. Accordingly, the same parts as those already described are denoted by the same reference numerals, and redundant description is omitted.

  The foundation of this construction is the fixed foundation hole 30, but the configuration is substantially the same as that described in Patent Document 2, so the details will be omitted. A base 15 having a predetermined depth for the hole 30 (for example, 1 meter) and a predetermined inner diameter (for example, 3.5 meters) is excavated and an H-shaped steel is formed in the bottom of the hole. A corrugated cylindrical liner plate 12 is installed.

  The base 15 and the liner plate 12 are firmly fixed so as not to be separated from each other in the vertical direction, and then the concrete 16 is placed between the base 15 and the liner plate 12 and the foundation lower hole to be solidified. Thereafter, the base side of the separating / connecting mechanism 13 constituted by a double-acting hydraulic jack or the like is fixed to the base 15, and the earth retaining body 10 is connected to the distal end side (vertical movement side) of the separating / connecting mechanism 13 via the fixing ring 14. (11) is fixed.

  At first, the separation mechanism 13 is set to the maximum extension state, the fixing ring 14 is fixed to the earth retaining body 10 for excavation which is the deepest part, and excavation is performed by the separation mechanism 13 while excavating with the excavating tools 6 and 7 and sucking and discharging debris. Depending on the degree, the excavation earth retaining body 10 is pushed downward in order. This process is referred to as an earth retaining body installation process. Reference numeral 36A denotes a debris suction / discharge duct.

  At this time, it is necessary that the fixed foundation hole 30 is fixed to the ground E so as to be able to withstand the reaction force of the push-down. In general, if the fixed foundation hole 30 is provided in the ground of a hard rock base. Can withstand the reaction force of this depression.

  Now, when the uppermost part of one earth retaining body 10, 11 has reached the shortest position at the tip of the separating / connecting mechanism 13, the installation process is continued in order by placing a new earth retaining body 11.

  2 (a) and 2 (b) shown here, such an installation process has progressed, and a three-stage earth retaining body 11 has already been constructed on the deepest earth retaining body 10 for excavation. The state where the separating / connecting mechanism 13 contracts from the state to the state of (b), the earth retaining bodies 10 and 11 are pushed down, and the excavation progresses is shown.

  Note that FIG. 2 is still in the middle of excavation of the foundation vertical hole, but in order to show that the rock drill 6 can also perform bottom-bottom excavation, the deepest part is also widened in this state. . However, in practice, the bottom expansion process is performed when the target depth is reached.

  FIG. 3 shows the construction process by the earth retaining body installation / recovery type foundation vertical pile construction system in the same manner as FIG. 2, and (a) shows the excavation tool from the earth retaining body for excavation by completing the earth retaining body installation process. Sectional drawing which shows the state which removed A, (b) is a figure which shows the vertical bar for concrete placement prepared on the ground, (c) is a front view which shows the state which suspended the vertical bar of (b), (D) is a lower view of (c).

  When the installation process described with reference to FIG. 2 is completed, the portions other than the main body 1 of the deepest excavation retaining body 10 can be separated, so that the excavating tools 6 and 7 and other parts are removed and taken to the ground. Thus, the state shown in FIG. Here, it is confirmed that the diameter-enlarged bottom hole EA is formed below the deepest body retaining body 1.

  Next, as shown in FIG.3 (b), the vertical bar 31 for the concrete placement of a foundation vertical pile is prepared, and the vertical bar hanging which becomes the target vertical bar arrangement | positioning radius first in the state laid on the ground. Connect the required number of lowering rings 33.

  When the vertical bar suspension ring 33 in this state is suspended by appropriate suspension means CF (for example, a hook of a crane), the state shown in FIG. 3C is obtained. When this state is viewed from below, the state shown in FIG. looks like. Here, in this state, it is confirmed that the horizontal line (hoop line) is not yet attached.

  FIG. 4 shows the construction process by the earth retaining body installation / recovery-type foundation vertical pile construction system in the same manner as FIG. 2, and (a) shows the order of the uppermost earth retaining body part in the suspended vertical line. Sectional drawing which shows the state which has been lowered | hung while installing a horizontal line (hoop line), (b) is placing concrete while collecting a retaining body in order after installation of a vertical line and a horizontal line is completed. It is sectional drawing which shows a state.

  The vertical bars 31 in the suspended state of FIG. 3 (c) are gradually put into the earth retaining bodies 10 and 11 after the installation process. At that time, as shown in FIG. From the outer side of the lowermost part of the vertical bar 31 in the lowered state, the horizontal bar (hoop bar) 32 in the divided state is inserted in order on the uppermost part of the earth retaining member 10.

  In this way, the construction process can be greatly simplified as compared to the case where the vertical bars 31 and the horizontal bars 32 are prepared in advance, and the vertical bars 31 and the horizontal bars 32 in the assembled state can be placed and transported. You can save money.

  In this way, when the vertical bar is lowered to the deepest part of the earth retaining bodies 10 and 11 (the bottom surface of the enlarged diameter bottom hole EA) while the horizontal bars 32 are attached in order, the recovery step shown in FIG. As shown in the figure, this recovery step is to place concrete 34 in order in the portion where the earth retaining body 10 is removed while the earth retaining bodies 11 and 10 are pulled out in order by the separation / contact mechanism 13.

  Here, it is confirmed that the concrete 34 is also placed in the deepest diameter expanded bottom hole EA to form the diameter expanded bottom 34A.

  FIG. 5 shows the construction process by the earth retaining body installation / recovery-type foundation vertical pile construction system in the same manner as FIG. 2, the concrete placing is completed, the earth retaining body is completely recovered and removed, and the separation mechanism is also installed. It is sectional drawing which shows the state removed.

  When the collection process described in FIG. 4 proceeds and the concrete is placed to the bottom of the fixed foundation hole 30, the last earth retaining body 10 is removed, and the separation mechanism 13 is also removed, so that the state shown in FIG. The construction of the foundation vertical pile 35 by the earth retaining body installation recovery type foundation vertical pile construction system is completed.

  Here, a part of the vertical bar 31 protrudes from the upper surface of the concrete placement portion of the foundation vertical shaft 35. After this, the fixed foundation hole 30 is removed, and the ground foundation of the building such as the original transmission line tower is constructed, but this is for connection with the ground foundation.

  In addition, the outer diameter of the earth retaining bodies 10 and 11, that is, the outer diameter of the foundation shaft 35 is, for example, 2.5 meters, and the depth of the foundation shaft is 20 meters depending on the specifications of the building. Although it is set as 30 meters, it is not restricted to this, The earth retaining body installation collection type | formula vertical pile construction system of this invention can respond to an outer diameter and depth other than this.

  In addition, the fixed foundation hole used by the foundation vertical pile construction system of the present invention has a simple configuration of the liner plate 12, the base 15, and the concrete 16 as described above, which is convenient for construction in mountainous areas. Also, removal after foundation vertical pile construction is easy.

<Embodiment 2>
In the earth retaining body installation / recovery type foundation vertical pile construction system of the present invention, it is very important whether the fixed foundation hole can withstand the reaction force (pressing force) required to push down and pull out the earth retaining body. . In general, when the ground E is a hard rock, the one shown in FIG. 2 (the same as Patent Document 2) is sufficient, but may be insufficient when the ground is soft.

  Therefore, the applicant has studied various types of fixed base holes that can increase the binding force with the ground E and ensure a sufficient reaction force even on soft ground, etc. It is proposed to use the foundation hole according to the softness of the ground.

  FIG. 6A is a cross-sectional view showing another example of a fixed foundation hole used in the earth retaining body installation recovery-type foundation vertical pile construction system of the present invention, and FIG. 6B shows the reaction force pile fixing bracket of FIG. A front view and (c) are side views of (b).

  Compared to the fixed foundation hole 30 in FIG. 2, the fixed foundation hole 30A has a plurality of reaction force piles 19 driven in a diagonally downward direction around the fixed foundation hole 30A from the lower part of the fixed foundation hole 30A. The reaction force pile 19 is different in that it is fixed to the fixed foundation hole 30A so that the inclined direction is maintained and to be removable after use.

  Further, for this reason, the fixed base hole 30A is lower than the fixed base hole 30 of FIG. 2 in that the lower part of the base hole 30A is not an H-shaped steel but an angle steel base 18, and the horizontal side of the base 18 and the reaction force The difference is that the pile 19 is fixedly connected by the reaction force pile fixing bracket 20 so that the inclination direction of the reaction force pile 19 is maintained.

  For example, assuming that the reaction force pile 19 has an outer diameter of 48.6 mm and a length of 1535 mm, is tilted 45 degrees and is driven radially, and the reaction force of the fixed foundation hole 30A is measured. Compared to the case where there is no reaction force pile on the ground, we were able to obtain approximately twice the reaction force.

  As shown in FIGS. 6B and 6C, the reaction force pile fixing bracket 20 includes a base fixing portion 20a and a reaction force pile fixing portion that can be fixed to the base fixing portion 20a with a variable inclination angle. 20b.

  The base fixing portion 20a includes a “U” -shaped portion, and sandwiches the horizontal side of the base 18, and the fixing bracket 20 is fastened and fixed to the base 18 with fixing bolts 20c. Moreover, the base fixing | fixed part 20a is provided with the projection part provided with the radial uneven | corrugated | grooved part 20d on both sides under the said "U" shaped part.

  The reaction force pile fixing portion 20b is a pair of upper portions provided on the inside with the same radial uneven portion 20d of the base fixing portion 20a, and a cylindrical shape connected to the upper portion, and the reaction force pile 19 is And a lower portion having a fixing hole 20e for receiving and fastening. A part of the fixing hole 20e is provided with a kerf 20f over the entire axial length thereof.

  The central portion of the radial uneven portion 20d in the upper portion of the reaction force pile fixing portion 20b is provided with a fastening fixing bolt 20g so as to penetrate the pair of upper portions, and the reaction force pile 19 is placed in the fixing hole 20e, By tightening the bolt 20g, the reaction force pile fixing portion 20b is fixed to the base fixing portion 20a while being adjusted to the inclination angle of the reaction force pile 19, and the reaction force pile 19 is fastened and fixed by the fixing hole 20e. Can do.

  Therefore, according to the reaction force pile fixing bracket 20 having such a configuration, after driving the reaction force pile 19, the reaction force pile fixing metal 20 is fixed to the base 18 on the base fixing portion 20a side, and on the reaction force pile fixing portion 20b side. The force pile 19 can be fixed, and the two can be fixedly connected while maintaining the inclination angle.

  Further, after use, both the reaction force pile fixing bracket 20 and the reaction force pile 19 can be removed, and after all, this fixed foundation hole 30A can be completely removed after the foundation vertical pile construction. In addition, according to the fixed base hole 30A, even when a sufficient reaction force cannot be obtained due to the ground, a reaction force approximately twice as large can be obtained.

  Fig.7 (a) is sectional drawing which shows the other example of the fixed foundation hole used for the earth retaining body installation collection type | formula vertical pile construction system of this invention, (b) is a figure which shows the arrangement | positioning state of the lock bolt of (a). It is.

  This fixed foundation hole 30B is different from the fixed foundation hole 30 of FIG. 2 in that a plurality of lock bolts 21 are driven in the horizontal direction at appropriate positions on the liner plate 12.

  This lock bolt 21 is a so-called horizontal anchor bolt, and steel bolts are driven horizontally in an arrangement as shown in FIG. 7 (b), and concrete 21a is press-fitted around it to be solidified. On the rear end side, the liner plate 12 is firmly fixed using a washer 21c and a nut 21b.

  According to the fixed base hole 30 </ b> B having such a configuration, the reaction force can be increased as compared with the fixed base hole 30.

  FIG. 8: is sectional drawing which shows the other example of the fixed foundation hole used for the earth retaining body installation collection type | formula vertical pile construction system of this invention.

  The fixed base hole 30C is fixed at the center fixing position of the fixed base hole C and at two external fixing positions at the same radius from the central portion outside the fixed base hole 30C, as compared with the fixed base hole 30 of FIG. The base hole fixing anchors 22A and 22B are driven in and fixed to the upper portion of the fixed base hole 30C in this example so that a vertical reaction force is transmitted by a fixed beam 23 made of H-shaped steel. It is a thing.

  Also in this case, the concrete 22a is pressed and solidified around the anchors 22A and 22B, and the upper ends of the anchors 22A and 22B are fixed to the fixed beam 23 with washers 22c and nuts 22b. This is the same as the case of 7.

  According to the fixed base hole 30 </ b> B having such a configuration, the reaction force can be increased as compared with the fixed base hole 30.

  Note that the anchor for fixing the fixed base hole may be only at one central position of the fixed base hole, or at least two internal fixing positions inside the basic hole that are the same radius away from the central portion. There may be only at least two external fixing positions separated by the same radius from the outer central portion, or these may be used in combination.

<Embodiment 3>
FIG. 9 is a configuration diagram showing the overall configuration of the earth retaining body installation / recovery-type foundation vertical pile construction system using the excavation earth retaining body of FIG. 1.

  This earth retaining body installation recovery-type foundation vertical pile construction system 50 (hereinafter referred to as “foundation vertical pile construction system 50”) includes the excavation earth retaining body 10 and the fixed foundation hole 30 described with reference to FIGS. In addition, suction discharge ducts 36A to 36D are provided for allowing a mixture of soil and suction air sucked and discharged by excavation to pass through.

  The foundation vertical pile construction system 50 includes a debris collector 40 that separates and collects debris sucked and discharged from the underground suction-type excavator 7, and a debris storage bag for the debris separated by the debris collector 40. A conveyor 41 for transporting to 41a, and a fine-grained sediment collector 42 that is provided on the upstream side of the debris collector and separates the fine soil that still remains are provided.

  Further, the foundation vertical pile construction system 50 includes a suction machine 43 provided on the upstream side of the fine debris collector 42, and an open / close bag type filter that exhausts while removing fine dust from the exhaust discharged from the suction machine 43. 44.

  The suction type excavator 7 and the debris collector 40 are suction suction ducts 36A, and the debris collector 40 and the fine sediment collectors 42 are suction discharge ducts 36B. The fine sediment collector 42 and the suction machine 43 Is a suction / discharge duct 36C, and the suction machine 43 and the opening / closing bag type filter 44 are connected by a suction / discharge duct 36D.

  With this configuration, the foundation vertical pile construction system 50 exhibits the effects of the excavation earth retaining body 10 and the fixed foundation hole 30 as the system 50, efficiently separates and collects the sucked and discharged debris, and The effect of not affecting the surrounding environment as much as possible can be exhibited. Hereinafter, further characteristic points of the system 50 will be described.

  10 (a) is an enlarged view of a debris collector that constitutes the system of FIG. 9, (b) is an upper cross-sectional view of (a), and (c) is a lower vertical cross-sectional view of (a). (D) is the principal part enlarged view of (c), (e) is BB arrow sectional drawing of (c).

  The debris collector 40 shown in FIG. 10 includes an upper cyclone-type debris separation unit 37, and a debris discharge unit 38 provided with a plurality of butterfly-shaped oblique shielding debris discharge lids 38b below the separation unit. .

  The cyclone type debris separation part 37 is a cylindrical body, and a cyclone inlet 37a for introducing a mixture of debris and suction air sucked above the outer peripheral wall of the cylindrical body in a tangential direction, and this introduction An air outlet 37b that opens to a lower portion of the downward vortex generated by the port 37a and guides the suctioned air after the separation is provided above the separation unit 37.

  Although the principle of this cyclone type is well-known, it is not a general vacuum cleaner, but is characterized by the use of a cyclone to separate debris and air in a mixture of debris and suction air generated during excavation of a shaft It is. The separated debris falls to the debris discharge part 38 below by gravity.

  The debris discharge portion 38 includes a cylindrical portion 38a, butterfly-shaped oblique shielding debris discharge lids 38b provided at three locations above and below the inner peripheral wall of the cylindrical portion 38a, and when the discharge lid 38b is shielded. And a semicircular ring-shaped peripheral ring plate 38c that is in contact with the upper and lower peripheral edge portions on the rotation limit side of the discharge lid 38b and maintains hermeticity.

  As shown in FIG. 10 (d), the butterfly-shaped oblique shielding type debris discharge lid 38b has an outer peripheral end that is in airtight contact with the inner peripheral wall of the cylindrical portion 38a while being inclined at a certain angle. In addition, the above-described peripheral ring plate 38c maintains airtightness with the outer peripheral side surface of the discharge lid 38b.

  As a result, the discharge lid 38b opens and closes only in the angle range C shown in FIG.

  Further, the debris discharge unit 38 is provided with a set of debris discharge lids 38b and peripheral ring plates 38c having such a configuration at three locations in the vertical direction, and always drops the separated debris downward. Two of the three discharge lids 38b are closed (shown).

  Therefore, according to the debris discharge unit 38, more specifically, the butterfly-shaped oblique shielding debris discharge lid 38b provided at a plurality of locations ensures more inflow of air from the lower opening side than before. Therefore, the suction force of the debris collector 40 can be maintained significantly better, and even debris mixed with large stones can be efficiently sucked out and separated.

  In addition, what is necessary is just to provide the set of the debris discharge lid 38b and the peripheral ring plate 38c two or more places up and down.

  11 (a) is an enlarged view of the fine-grained sediment collector constituting the system of FIG. 9, (b) is an upper cross-sectional view of (a), and (c) is an open / close bag type filter constituting the system. (D) is an essential part longitudinal cross-sectional view of (c).

  11 (a) and 11 (b) collects fine sediment that cannot be collected by the debris collector 40, and is similar to the cyclone-type debris separator 37 of the debris collector 40. The cyclone inlet 42a and the air outlet b are provided, and the same separation effect can be exerted on the fine earth and sand.

  In addition, the lower part of the fine earth and sand collector 42 can be opened and closed, and the separated fine earth and sand can be taken out and collected as appropriate.

  The open / close bag type filter 44 of FIGS. 11C and 11D uses four open / close bag type filter units 44b that allow only air to pass without passing fine dust that could not be separated even by the fine sand collection machine 42. In the distribution pipe 44a, the exhaust from the suction device 43 is evenly distributed to these units 44b.

  The distribution pipe 44a has an intake portion at the center in the longitudinal direction, and has exhaust portions to the two units 44b on both sides around the intake portion, thereby achieving the above-described equal exhaust distribution.

  The open / close bag type filter unit 44b is detachably fixed to the distribution pipe 44a by the upper binding part 44c, and the lower binding part 44d can be released to discharge and collect the fine dust accumulated inside.

<Embodiment 4>
FIGS. 12A and 12B are external perspective views illustrating a suction type excavator that can be attached to and detached from the excavation retaining body of the present invention.

  A suction excavation tool (excavation means) 8 (DM) in FIG. 12A is the same as the excavation tool described in Patent Document 3, and includes an attachment portion 8a, a rotation means 8b, and an excavation drill tip 8d. 8e is provided at the center shaft that rotates simultaneously and the tip of the cylinder 8c, and a non-rotating lid is attached to the rear end of the cylinder 8c, and a suction duct port 8f is installed in the lid, and suction is performed while excavating debris. It can be discharged.

  The suction type excavator 8 is effective for excavation of a ground having a hardness that does not need to be rocked by a rock drill. Demonstrate as.

  A suction type earth auger (excavating means) 9 (DM) in FIG. 12B is an earth auger used as an excavation drill tip of the suction type excavator 8 in FIG. 12A. A moving means 9b, a non-rotating cylinder 9c with a lid, an earth auger 9d rotated by a rotating means 9B, and a suction duct port 9f provided in the cylinder 9C are provided.

  This suction-type earth auger 9 is suitable for excavation of the ground that can be drilled by the earth auger 9d, and can be sucked and discharged while excavating the earth and sand. Is exhibited as the excavating earth retaining member 10.

  Thus, according to the foundation vertical pile construction system 50, a small-diameter vertical hole necessary for construction of a steel tower foundation construction or a landslide prevention pile in a remote mountainous area was excavated by remote operation from the ground. Since the debris can be discharged and collected in a sealed system, it is possible to provide an environment-symbiotic system that preserves the environment without affecting the surrounding environment as much as possible.

  In addition, the earth retaining body for excavation and the foundation vertical pile construction system of the present invention are not limited to the above-described embodiment, and various modifications and combinations are possible within the scope described in the claims and the scope of the embodiment. These modifications and combinations are also included in the scope of the right.

  The excavation earth retaining body and foundation vertical pile construction system of the present invention can enable excavation and rock formation with the necessary pressing force without the need to press from the ground such as a hydraulic excavator and telescopic on the ground during excavation. It can be used in required industrial fields.

An example of the earth retaining body for excavation of this invention is shown, (a) is the upper side figure, (b) is the A view principal part detailed drawing of (a), (c) is the partially fractured front view Figure The construction process by the earth retaining body installation collection type | formula vertical pile construction system using the earth retaining body for excavation of FIG. 1 is shown in order, (a), (b) is installing the earth retaining body while excavating. Cross-sectional view showing the process The construction process by the earth retaining body installation recovery type foundation vertical pile construction system is shown in order as in FIG. 2, and (a) shows the state in which the earth retaining body installation process is completed and the excavator is removed from the excavation earth retaining body. (B) is a figure which shows the vertical line for concrete placement prepared on the ground, (c) is a front view which shows the state which suspended the vertical line of (b), (d) The lower view of (c) As shown in FIG. 2, the construction process by the retaining body installation / recovery type foundation vertical pile construction system is shown in order. ) Is a cross-sectional view showing a state of being lowered while installing, and (b) is a cross-sectional view showing a state in which concrete is placed while collecting the retaining members in order after the installation of the vertical and horizontal bars is completed. Figure As in Fig. 2, the construction process by the earth retaining body installation and recovery-type foundation vertical pile construction system is shown in order, the concrete placement is completed, the earth retaining body is completely recovered and removed, and the separation and attachment mechanism is also removed. Cross section showing (A) is sectional drawing which shows the other example of the fixed foundation hole used for the earth retaining body installation collection type | formula vertical pile construction system of this invention, (b) is a front view which shows the reaction force pile fixing metal fitting of (a). , (C) is a side view of (b) (A) is sectional drawing which shows the other example of the fixed foundation hole used for the earth retaining body installation collection type | formula vertical pile construction system of this invention, (b) is a figure which shows the arrangement | positioning state of the lock bolt of (a). Sectional drawing which shows the other example of the fixed foundation hole used for the earth retaining body installation collection-type foundation vertical pile construction system of this invention The block diagram which shows the whole structure of the earth retaining body installation collection-type foundation vertical pile construction system using the earth retaining body for excavation of FIG. (A) is an enlarged view of a debris collector that constitutes the system of FIG. 9, (b) is an upper cross-sectional view of (a), (c) is a lower vertical cross-sectional view of (a), and (d). Is an enlarged view of the main part of (c), (e) is a sectional view taken along the arrow BB of (c). (A) is an enlarged view of a fine sediment collector that constitutes the system of FIG. 9, (b) is an upper cross-sectional view of (a), and (c) is an enlarged view of an open / close bag type filter that constitutes the system. Figure, (d) is a longitudinal sectional view of the main part of (c). (A), (b) is an external appearance perspective view which illustrates the suction-type excavation tool which can be detachably installed in the earth retaining body for excavation of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Earth retaining body 2 Support ring 3 Radial support beam 4 Fixed support 5 Moving support 6 (DM) Rock drill (excavation means)
7 (DM) Suction drilling rig with rock drill (drilling means)
8 (DM) Suction drilling tool (drilling means)
9 (DM) Suction earth auger (drilling means)
DESCRIPTION OF SYMBOLS 10 Earth retaining body for excavation 11 Earth retaining body 13 Separation / detachment mechanism 19 Reaction force pile 20 Reaction force pile fixing bracket 21 Lock bolt 22A, 22B Fixed base hole fixing anchor 30-30C Fixed base hole 31 Longitudinal muscle 32 Horizontal muscle (Hoop muscle)
34 Concrete 34A Large-diameter bottom 35 Foundation vertical pile 37 Cyclone type debris separation unit 38 Debris discharge unit 38b Butterfly-shaped oblique shielding type debris discharge lid 40 Debris collector 42 Fine soil and sand collector 43 Suction machine 44 Opening and closing bag type filter 50 Soil Base installation pile type vertical pile construction system DM Excavation means E Ground EA Expanded bottom hole

This FIG. 2 is still in the middle of excavation of the foundation shaft , but in order to show that the rock drilling machine 6 is also capable of expanding the bottom, the state where the deepest part is expanded is shown in this state as well. Yes. However, in practice, the bottom expansion process is performed when the target depth is reached.

Thus, according to the foundation vertical pile construction system 50, a small-diameter vertical shaft required for construction of a steel tower foundation construction or a landslide prevention pile in a mountainous remote area was excavated by remote operation from the ground. Since debris can be discharged and collected in a sealed system, it is possible to provide an environment-symbiotic system that preserves the environment without affecting the surrounding environment as much as possible.

The earth retaining body installation recovery type foundation vertical pile construction system of the present invention is the earth retaining body installation step in which the earth retaining body is pushed down in order by the separation mechanism fixed to the fixed foundation hole, and the earth retaining body in order. The earth retaining body installation recovery type vertical pile construction system that realizes the earth retaining body recovery process of placing concrete while pulling out and collecting,
The excavation earth retaining body that can be used at the deepest part of the earth retaining body used in the system includes a drilling means including any one of a suction excavation tool, a suction excavation tool with a rock drill, and a suction earth auger, The excavation retaining body can be moved in the circumferential direction, or and / or its excavation direction can be tilted or fixed, or or the radial position of the excavation retaining body 1 can be moved or fixed, It can be installed detachably ,
A support ring detachably installed on the inner peripheral wall of the excavation earth retaining body main body, a radial support beam rotatably installed on the support ring, and a longitudinal end of the radial support beam are fixed to the support ring. A fixed support and a movable support supported so as to be movable in the radial direction on the radial support beam, and the fixed support can be detachably installed with any of the excavating means. Or alternatively, the moving support can be detachably installed in any of the excavation means,
From the lower part of the fixed foundation hole, a plurality of reaction force piles are driven radially diagonally downward about the fixed foundation hole so that the reaction force pile is maintained in the inclined direction in the fixed foundation hole. And it is fixed so that it can be removed after use .

The foundation vertical pile construction system of the present invention is also provided with a debris collector that separates and collects the debris sucked and discharged to the ground by a suction type excavation means, and the separation part of this debris collector is a cyclone type, A feature is that a plurality of butterfly-shaped oblique shielding type debris discharge lids are provided above and below the separation portion.

The earth retaining body installation recovery type foundation vertical pile construction system of the present invention is the earth retaining body installation step in which the earth retaining body is pushed down in order by the separation mechanism fixed to the fixed foundation hole, and the earth retaining body in order. The earth retaining body installation recovery type vertical pile construction system that realizes the earth retaining body recovery process of placing concrete while pulling out and collecting,
The excavation earth retaining body that can be used at the deepest part of the earth retaining body used in the system includes a drilling means including any one of a suction excavation tool, a suction excavation tool with a rock drill, and a suction earth auger, The excavation retaining body can be moved in the circumferential direction, or and / or its excavation direction can be tilted or fixed, or or the radial position of the excavation retaining body 1 can be moved or fixed, It can be installed detachably,
A support ring that is detachably installed directly on the inner peripheral wall of the main body for excavation, a radial support beam that is rotatably installed on the support ring, and a longitudinal end of the radial support beam. A fixed support that is fixed, and a movable support that is supported so as to be movable in a radial direction on the radial support beam, wherein the fixed support can be detachably installed in any one of the excavation means. Alternatively, or alternatively, the moving support body is configured such that any of the excavation means can be detachably installed.

The present invention relates to an earth retaining body installation step in which the earth retaining body is sequentially pushed down and installed by a separation mechanism fixed to the fixed base hole, and an earth retaining body in which concrete is placed while being pulled out and collected. It is related with the earth retaining body installation recovery type vertical pile construction system which realizes a recovery process.

The present invention is intended to ameliorate the above-mentioned problem, and during excavation, there is no need to press from the ground such as a hydraulic excavator and telescopic on the ground, and the earth retaining body that enables excavation and rock formation with the necessary pressing force. It aims at providing an installation collection type foundation vertical pile construction system.

The earth retaining body installation / recovery-type foundation vertical pile construction system of the present invention is the earth retaining body installation step in which the earth retaining body is pushed down in order by the separation / contact mechanism fixed to the fixed foundation hole, and the earth retaining body is pulled out in order. A retaining body installation recovery type vertical pile construction system that realizes the retaining body recovery process of placing concrete while collecting
The earth retaining body for excavation, which is the deepest earth retaining body used in the system, is detachably fixed and installed so as to be in contact with the entire circumference of the cylindrical retaining body main body and the inner peripheral wall of the retaining body main body. A support ring that moves up and down as the earth retaining body is pushed down and pulled out, a radial support beam that is rotatably installed on the support ring, and a longitudinal end of the radial support beam. A fixed support, and a movable support supported to be movable in the radial direction on the radial support beam,
The fixed support body and / or the moving support body is characterized in that any one of a suction excavator, a suction excavator with a rock drill, and a suction earth auger is detachably installed .

The earth retaining body installation recovery type vertical pile construction system of the present invention also includes a debris collector that separates and collects debris sucked and discharged to the ground by a suction type excavation means, and the debris collector is separated. The part is a cyclone type, and a plurality of butterfly-shaped oblique shielding type debris discharge lids are provided above and below the separation part.

According to the earth retaining body installation recovery-type vertical pile construction system of the present invention, the earth retaining body installation step of installing the earth retaining body by pushing down the earth retaining body in order by the connecting / disconnecting mechanism fixed to the fixed foundation hole and the earth retaining body The earth retaining body installation recovery type vertical pile construction system that realizes the earth retaining body recovery process of placing concrete while pulling out in order,
The earth retaining body for excavation, which is the deepest earth retaining body used in the system, is detachably fixed and installed so as to be in contact with the entire circumference of the cylindrical retaining body main body and the inner peripheral wall of the retaining body main body. A support ring that moves up and down as the earth retaining body is pushed down and pulled out, a radial support beam that is rotatably installed on the support ring, and a longitudinal end of the radial support beam. A fixed support, and a movable support supported to be movable in the radial direction on the radial support beam,
Since the fixed support body and / or the movable support body is detachably installed with either a suction type excavator, a suction excavator with a rock drill, or a suction earth auger, Since the reaction force from the fixed foundation hole is received and a pressing force can be applied to the excavation means attached thereto, the necessary pressing force can be applied without excavation from the ground such as a hydraulic excavator and telescopic on the ground. Drilling and dredging can be done with pressure.

According to the earth retaining body installation / recovery type foundation vertical pile construction system of the present invention, it is also provided with a debris collector that separates and collects debris sucked and discharged to the ground by a suction-type excavating means. Since the separation part is a cyclone type and a plurality of butterfly-shaped oblique shielding type debris discharge lids are provided above and below the separation part, the inflow of air from the lower opening side is surely prevented, and a debris collector The suction force can be maintained at a very good level, and even if the stone is mixed with large stones, it can be efficiently sucked out and separated .

Claims (8)

The earth retaining body installation step of installing the earth retaining body by sequentially pushing down the earth retaining body by the separation / contact mechanism fixed to the fixed base hole, and the earth retaining body collecting step of placing the concrete while pulling out the earth retaining body in order and collecting it. The earth retaining body for excavation that can be used in the deepest part of the earth retaining body used in the collection pile vertical pile construction system that realizes
At least one of excavation means such as a suction excavator, a suction excavator with a rock drill, a suction earth auger, and a rock drill can be moved in the circumferential direction of the excavation retaining body, or and / or The excavation earth retaining body can be installed so as to be attachable / detachable by tilting or fixing the excavation direction, and / or by moving or fixing the radial position of the excavation earth retaining body. .   2. The excavation earth retaining member according to claim 1, wherein the excavation earth retaining member is made of a thick steel material and is heavier than an ordinary earth retaining member having a thin steel plate frame structure.   A foundation vertical pile construction system using the earth retaining body for excavation according to claim 1 or 2.   From the lower part of the fixed foundation hole, a plurality of reaction force piles are driven radially diagonally downward about the fixed foundation hole so that the reaction force pile is maintained in the inclined direction in the fixed foundation hole. And the foundation vertical pile construction system of Claim 2 fixed so that removal is possible after use.   At least two internal fixing positions at the central fixing position of the fixed base hole, or at the same radius from the central portion, and / or at least two positions at the same radius from the central portion outside the fixed base hole The fixed base hole fixing system according to claim 3 or 4, wherein an anchor for fixing the fixed base hole is driven into an external fixing position of the base. Equipped with a debris collector that separates and collects debris sucked and discharged to the ground by a suction-type drilling means,
The foundation vertical pile according to any one of claims 3 to 5, wherein a separation part of the debris collector is a cyclone type, and a plurality of butterfly-shaped oblique shielding debris discharge lids are provided below the separation part. Construction system.   The foundation vertical pile construction system according to any one of claims 3 to 6, wherein a fine earth and sand collector is provided on the upstream side of the debris collector, and the fine earth and sand collector is a cyclone type.   8. The opening and closing bag type filter that exhausts while removing a fine dust from the exhaust discharged from the suction machine is provided on the upstream side of the fine-grained debris collector. Any vertical foundation pile construction system.

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