JP5292019B2 - Pile construction device and cast-in-place concrete pile construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide pile construction equipment capable of efficiently constructing a cast-in-place concrete pile even in a place adjacent to a railroad and a narrow place. <P>SOLUTION: The pile construction equipment 1 for use in the construction of the cast-in-place concrete pile 4 includes a drilling unit 2 which is arranged on one of sides interposing a construction site 40 and a material-and equipment-feeding device 3 arranged on the other side. The drilling unit includes a drilling-side truck section 21 provided with wheels 211, a drilling-side frame section 22 formed thereon, a swivel 23 mounted in a vertically slidable manner in the drilling-side frame section, and a drilling-side lifting section 25. In addition, the material-and equipment-feeding device 3 includes a material-and equipment-side truck section 31 provided with wheels 311, a material-and equipment-side frame section 32 formed thereon, a material-and equipment-side lifting section 33, and a lateral-movement section 34 for laterally moving the material and equipment. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a pile construction apparatus used when a cast-in-place concrete pile is constructed in a narrow place such as a side of a railway, and a method for constructing a cast-in-place concrete pile using the same.

  Conventionally, when a pile is constructed in a place adjacent to a railroad track, it is known to use a pile driving device in order to efficiently place the pile in a short period of time (see Patent Documents 1-3, etc.) ).

In other words, in order to run a railway in service safely, such construction must be carried out at night when the railway is closed or within a range that does not violate the railway building limits. For this reason, the pile driving device which was excellent in mobility and workability was developed, and pile construction is performed efficiently.
Japanese Patent Publication No. 8-30337 Utility Model Registration No. 2587546 JP 7-331655 A

  However, the pile driving device disclosed in Patent Literatures 1 to 3 is a dedicated machine for placing an H-shaped steel material.

  On the other hand, when a viaduct is constructed above a railroad track or road, the load acting on the pile foundation increases, so a pile with a large bearing capacity such as a cast-in-place concrete pile must be constructed.

  Accordingly, the present invention provides a pile construction apparatus capable of efficiently constructing a cast-in-place concrete pile even in a place adjacent to a railway or a narrow place, and a method for constructing a cast-in-place concrete pile using the same. The purpose is to provide.

  In order to achieve the above object, the pile construction apparatus of the present invention is a pile construction apparatus used when a cast-in-place concrete pile is constructed, and is disposed on one side across the construction spot of the cast-in-place concrete pile. A drilling device, and a material and equipment supply device arranged on the other side, the drilling device including a drilling side carriage unit provided with a moving means that enables movement to the construction site, and the excavation side carriage unit An excavation side frame portion formed on the excavation side frame portion, an excavator portion slidably attached to the excavation side frame portion, and an excavation side lifting portion attached to the excavation side frame portion or the excavation side carriage portion. The equipment supply device includes an equipment-side trolley part provided with a moving means that enables movement to the construction site, and an equipment-equipment-side frame part formed on the equipment-side trolley part. , The equipment side Characterized in that it comprises a equipment-side Agekasane portion attached to the frame part or the equipment-side carriage portion, and a transverse moving unit configured to traverse the equipment on the equipment side carriage portion.

  Here, the excavator may be provided with a height adjusting means for adjusting the height of the upper surface of the excavation side carriage part.

  Moreover, the said excavation side frame part and the said excavation side cart part can be formed separately, and the plane position adjustment means which adjusts the planar position of the said excavation side frame part on the said excavation side cart part can also be provided. Further, horizontal jacks may be arranged on both sides of the center of the excavation side carriage as the planar position adjusting means, and the horizontal jacks may be capable of independently adjusting the amount of expansion and contraction.

  Further, the moving means of the excavator may be a wheel for running a rail, and a gripping means for gripping the rail may be provided on the lower surface side of the excavation side carriage part.

  Further, as the excavation side lifting part and the equipment / material side lifting part, a gear to be engaged with a reinforcing bar on the excavation side carriage part and the construction site side of the cast-in-place concrete pile of the equipment / vehicle side truck part; Further, a configuration may be provided in which a gear support portion including a motor for rotating the motor is provided.

  Moreover, the construction method of the cast-in-place concrete pile of this invention is a construction method of the cast-in-place concrete pile performed using the said pile construction apparatus, Comprising: The said excavation apparatus and the said materials and equipment supply apparatus are the said cast-in-place concrete pile. When the excavator is moved by the moving means toward the construction site, and the excavator is used to supply the equipment necessary for excavation, the excavator-side lifting portion of the excavator And a rebar rod suspended together by the lifting part on the equipment side of the equipment supply apparatus is inserted into the excavation hole.

  Furthermore, it is a construction method of a cast-in-place concrete pile performed using a pile construction device in a place adjacent to the railway, and the construction limit of the railway is violated when the excavator and the equipment supply device move. A rail is laid at a position where no excavation is performed, and the excavation device and the equipment supply device are run along the rail toward the construction site of the cast-in-place concrete pile, and reach the construction site to start excavation. The method may be characterized in that the rail is gripped by the grip portion before.

  Further, it is a construction method of a cast-in-place concrete pile to be performed using a pile construction device, and the excavation device and the equipment supply device are moved by the moving means toward the construction site of the cast-in-place concrete pile, When excavating with the excavator, the equipment and materials supply device supplies the equipment and materials necessary for excavation, and after the excavation hole is formed, the gear support portion of the excavator and the equipment and equipment supply device The reinforcing bar can be supported by the gear support portion, and the reinforcing bar can be sent out to the excavation hole by rotating the motor.

  The pile construction device of the present invention configured as described above includes a drilling device for drilling a hole for constructing a cast-in-place concrete pile, and a material / equipment supply device for supplying materials such as equipment used during excavation and reinforcing bar It has.

  These excavation devices and equipment supply devices are provided with moving means, and can quickly move to a construction site on which necessary equipment and materials are mounted to construct a cast-in-place concrete pile.

  In addition, the excavator has an excavation side carriage and an excavation side lifting part, and the equipment supply unit has an equipment and truck side and an equipment lifting part. This can be done without using a crane. For this reason, even in confined places where cranes cannot be used or places where there are restrictions on the use of the sky, it is possible to efficiently perform excavation, rebar construction, and concrete placement required when constructing cast-in-place concrete piles. Can be done.

  In addition, by providing the excavator with a height adjustment means that adjusts the height of the upper surface of the excavation side carriage, the upper surface can be leveled even if the installation surface is tilted, and the vertical pile is always accurate. Construction is possible.

  Furthermore, since the excavation side frame part and the excavation side carriage part are formed separately and the excavation side frame part can be moved by the plane position adjusting means, fine adjustment of the plane position is facilitated, and the accurate position is obtained. An excavated hole having a precise shape can be formed.

  In addition, by placing horizontal jacks on both sides of the center of the excavation side trolley part and adjusting the amount of expansion and contraction independently, the excavation side frame part on the excavation side trolley part can be adjusted in the front-rear direction, It becomes possible to move in the rotation direction, and alignment in any direction in the plane can be performed.

  Further, the moving means of the excavator is a wheel for running the rail, and the gripping means for gripping the rail is provided on the lower surface side of the excavation side carriage part, thereby easily ensuring the reaction force required when excavating. be able to.

  Further, by attaching the gear support portions that support the reinforcing bar rods to the excavation side carriage unit and the equipment side cart unit, the reinforcing bar rods inserted into the excavation holes can be supported and sent out stably. In other words, the rebar rod is stretched by joining sequentially in the longitudinal direction by welding or the like until the length required for the pile to be built, so the longer the pile length, the greater the weight, and the support and delivery work It becomes difficult.

  For this reason, the reinforcing bar is supported from both sides by the excavator and the equipment supply device, and can be sent out by the driving force of the motor, so that the reinforcing bar can be stably inserted into the drilling hole.

  In the method for constructing a cast-in-place concrete pile according to the present invention, the excavator and the equipment supply device are moved toward the construction site by the moving means, and the equipment necessary for the excavator is supplied from the equipment supply device during excavation. The rebar is suspended by the excavation side lifting part and the equipment side lifting part and inserted into the excavation hole.

  For this reason, in the process of constructing a cast-in-place concrete pile, excavation preparation, excavation, and insertion of a reinforcing bar can be performed quickly without being limited by work time.

  In addition, when a cast-in-place concrete pile is constructed in a location adjacent to the railway, a rail is laid in a position that does not violate the construction limit of the railway in advance.

  For this reason, even if construction work of cast-in-place concrete piles is performed by moving the excavator and equipment supply equipment during the business hours of the railway, the construction will be performed safely and efficiently without affecting the railway. be able to.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  As shown in FIG. 4, the pile construction apparatus 1 according to the present embodiment includes an excavation apparatus 2 disposed on one side of the construction site 40 of the cast-in-place concrete pile 4 and an equipment supply apparatus 3 disposed on the other side. And.

  First, the configuration of the excavator 2 will be described with reference to the side view of FIG. 1 and the plan view of FIG.

  The excavator 2 includes an excavation side carriage unit 21 provided with wheels 211 as movement means that enables movement to the construction site 40, and an excavation side frame unit formed separately on the excavation side carriage unit 21. 22, a swivel 23 as an excavator part that is slidably attached to the excavation side frame part 22 in the vertical direction, and an excavation side lifting part 25 suspended from the excavation side frame part 22.

  The excavation side carriage unit 21 is a portion that becomes a base of the excavator 2 and is formed in a frame shape or a disk shape in which a steel plate, a metal net, or the like is pasted on the upper surface thereof. A plurality of wheels 211 are attached to the lower surface side of the excavation side carriage unit 21. The wheel 211 is a bogie wheel for railroad for running the rail 11. The excavator 2 may be a self-propelled type provided with a driving force source, or may be a type that moves by being pulled or pushed by a driving vehicle.

  In addition, rail clamps 213,... As gripping portions are provided at both ends of the excavation side carriage unit 21. The rail clamp 213 is opened so as not to contact the rail 11 when the excavator 2 is moved. Moreover, after the excavator 2 moves to a desired position, the rail clamp 213 is closed and the rail 11 is gripped. By arranging such rail clamps 213,... At the four corners of the excavation side carriage unit 21, it is possible to prevent movement and lifting in the front-rear direction, left-right direction, and up-down direction during work.

  Further, a height adjustment jack 212 as a height adjustment means is provided on the lower surface side of the excavation side carriage unit 21. The height adjustment jack 212 extends and contracts in the vertical direction with its lower end pressed against the rail 11. And even if there is a height difference between the rails 11 and 11 by adjusting the amount of expansion / contraction of the height adjustment jacks 212,... Arranged near the four corners of the excavation side carriage part 21, the excavation side carriage part It can adjust so that the upper surface of 21 may become horizontal.

  Moreover, the excavation side frame part 22 arrange | positioned on this excavation side trolley | bogie part 21 is a frame body which attaches and supports the swivel 23 and the excavation side lifting part 25. FIG. This excavation side frame part 22 is formed separately from the excavation side carriage part 21, and moves on it by wheels 242,. Further, guide walls 243,... Are attached adjacent to the running surfaces 244,... On the excavation side carriage unit 21 on which the wheels 242,.

  These wheels 242,... Are attached to the lower frame 224 of the excavation side frame portion 22, and the base frame 225 and the column 223 are attached on the lower frame 224.

  On the other hand, the excavation side carriage unit 21 and the excavation side frame unit 22 are connected by horizontal jacks 24 and 24 as plane position adjusting means. As shown in FIG. 2, the horizontal jacks 24 and 24 are disposed on both sides of the center of the excavator 2.

  The horizontal jack 24 has a rear end fixed to the excavation side carriage unit 21 and a front end connected to the excavation side frame unit 22 via a connecting member 241. The connecting member 241 includes a pair of plate members 2411 and pins 2412 that are suspended from the lower surface of the mounting beam 241 a that spans the lower frame 224, and the tip of the horizontal jack 24 is connected to the pins 2412.

  When the horizontal jacks 24 and 24 are expanded and contracted, the excavation side frame portion 22 moves in the front-rear direction while being parallel to the excavation side carriage unit 21 when the expansion and contraction amounts of both are equal. Further, as shown in the plan view of FIG. 2, when the horizontal jacks 24, 24 arranged on the left and right have different expansion / contraction amounts, the excavation side frame unit 22 is inclined and rotated on the excavation side carriage unit 21. Become.

  Moreover, the excavation side frame part 22 moves on the excavation side cart part 21 by the wheels 242,..., But the movable range of the wheels 242,. Since it is restricted by the guide walls 243,..., The excavation side frame portion 22 does not fall off from the excavation side carriage portion 21.

  Further, the excavation side frame portion 22 can be moved in the horizontal direction on the excavation side carriage portion 21 by the wheels 242,..., But after the plane position adjustment, the excavation side frame portion 22 can move in the horizontal direction and the vertical direction. The load that is restricted and acts on the excavation side frame portion 22 from the swivel 23 and the excavation side lifting portion 25 is transmitted to the excavation side carriage portion 21. That is, a stopper (not shown) is provided so that the excavation side frame portion 22 is not separated from the excavation side carriage portion 21 and falls.

  Further, the support column 223 of the excavation side frame portion 22 protrudes upward from the base frame 225, and the front arm 221 extends horizontally from the upper end toward the front of the excavation side carriage unit 21. Further, a rear arm 222 is extended in a direction opposite to the front arm 221.

  Further, the excavation side lifting part 25 is suspended from the tip of the front arm 221. The excavation side lifting part 25 is attached to a block 251 suspended from the front arm 221, a hook 252 provided on the block 251, a pulley 253 attached to the front end of the front arm 221, and a rear end of the rear arm 222. And a winch 256 installed on the base frame 225, and a wire rope 255 that is hooked on the block 251, spanned on the pulleys 253 and 254, and wound around the winch 256.

  That is, when the wire rope 255 is sent out from the winch 256, the block 251 is lowered, and when the wire rope 255 is wound by the winch 256, the block 251 is raised, so that the materials and equipments moored to the hook 252 can be raised and lowered. .

  Further, the swivel 23 is attached to the column 223 of the excavation side frame portion 22 so as to be slidable in the vertical direction along the column 223. That is, a guide rail 233g extends vertically along the support 223 on the front surface of the support 223, and a slider 231 provided on the back side of the swivel 23 is engaged with the guide rail 233g. Slide up and down.

  The swivel 23 is configured to slide upward or downward when the lifting jack 233 is operated. As shown in FIG. 1, the lifting jack 233 is a hydraulic jack mainly composed of a double rod type double acting cylinder 2331 and rods 2332 and 2332 arranged on both sides thereof. When the double-action cylinder 2331 is fixed to the excavation side frame portion 22 and the double-action cylinder 2331 is operated, the rods 2332 and 2332 on both sides move upward or downward.

  On the other hand, the upper chain 233a is connected to the upper end of the slider 231 and the lower chain 233b is connected to the lower end. The upper chain 233a is meandered by being spanned between a sprocket 233d attached near the upper end of the column 223 and a sprocket 233c attached to the upper rod 2332 of the lifting jack 233, and the end of the upper chain 233a is attached to the rear arm 222. Connected.

  In addition, the lower chain 233b is meandered by being spanned between a sprocket 233e attached near the lower end of the support post 223 and a sprocket 233f attached to the lower rod 2332 of the lifting jack 233, and is attached to the lower frame 224. The ends are connected.

  When the lifting jack 233 configured as described above is operated, when the rods 2332 and 2332 are raised, the swivel 23 is lowered, and when the rods 2332 and 2332 are lowered, the swivel 23 is raised.

  The swivel 23 has a function of rotating the drill pipe 35 connected to the lower end 23a. Further, the drill water in the drill hole 41 rises through the drill pipe 35 and is discharged via the swivel 23 by the drain hose 232 connected to the upper end 23b.

  Next, the configuration of the equipment supply device 3 will be described with reference to the perspective view of FIG.

  This equipment supply device 3 includes an equipment / equipment side carriage 31 provided with wheels 311 as moving means for enabling movement to the construction site 40, and the equipment / equipment side formed on the equipment / equipment side carriage 31. It is mainly comprised by the frame part 32, the equipment side lifting part 33 suspended from the equipment side frame part 32, and the lateral movement part 34 which carries out the lateral movement of the equipment on the equipment side trolley part 31. .

  The material / equipment-side trolley unit 31 is a portion serving as a base of the material / equipment supply device 3, and a cargo bed is formed by affixing a steel plate or a wire mesh on the upper surface of the frame-shaped member. In addition, a plurality of wheels 311,... Are attached to the lower surface side of the equipment / material-side carriage unit 31. This wheel 311 is a bogie wheel for railways for running the rail 11. Note that, similarly to the excavator 2, the equipment supply device 3 may be a self-propelled type provided with a driving force source, or may be a type that moves by being pulled or pushed by a driving vehicle.

  In addition, rail clamps 312... As gripping portions are provided at both ends of the material / material-side cart unit 31. The rail clamp 312 is opened so as not to contact the rail 11 when the equipment supply device 3 is moved. Moreover, after the equipment supply device 3 moves to a desired position, the rail clamp 312 is closed and the rail 11 is gripped. By arranging such rail clamps 312,... At the four corners of the equipment-side cart section 31, the equipment supply apparatus 3 can be moved in the front-rear direction, the left-right direction, and the up-down direction during operations such as lifting the equipment. It can be prevented from moving or floating.

  In addition, the equipment / material-side frame section 32 arranged on the equipment / equipment-side carriage section 31 is a frame that attaches and supports the equipment / material-side lifting section 33 and the lateral movement section 34. The material / equipment side frame 32 is fixed to and integrated with the material / equipment side carriage 31.

  The equipment / material-side frame section 32 is mainly composed of a front frame 321 that serves as a support for the equipment / material-side lifting section 33 and a lateral frame 323 that serves mainly as a support for the lateral movement section 34.

  The front frame 321 is assembled in a frame shape so as to secure a height necessary for lifting the equipment. In addition, an opening is formed in front of the front frame 321 so that the supplied materials can pass therethrough.

  Further, an arm 322 that extends forward is bridged around the top of the front frame 321. Then, the material / material-side lifting portion 33 is suspended from the tip of the arm 322.

  The equipment / lifting portion 33 is attached to a block 331 suspended from the tip of the arm 322, a hook 332 provided on the block 331, a pulley 333 attached to the tip of the arm 322, and a rear end of the arm 322. The pulley 334 is mainly composed of a winch 336 installed below the pulley 334, and a wire rope 335 that is hooked on the block 331, bridged on the pulleys 333 and 334, and wound around the winch 336.

  That is, when the wire rope 335 is sent out from the winch 336, the block 331 is lowered, and when the wire rope 335 is wound up by the winch 336, the block 331 is raised, so that the materials and equipment moored on the hook 332 can be raised and lowered. .

  In addition, the horizontal movement unit 34 supported by the horizontal frame 323 includes a horizontal rail 341 extending in the front-rear direction (longitudinal direction) on the equipment / vehicle-side carriage unit 31 and a horizontal slider that moves along the horizontal rail 341. 342, a winding winch 343 suspended from the horizontal slider 342, and a chain 344 for connecting the winding winch 343 and materials (such as the drill pipe 35).

  The horizontal slider 342 includes a pair of rollers that sandwich the horizontal rail 341 in which grooves are formed. The horizontal slider 342 may be slid by human power or slid by power.

  Further, the horizontal frame 323 is formed by a rectangular frame member that can bridge the horizontal rail 341 to the top and a pillar member that supports the rear of the rectangular frame member, and the front of the rectangular frame member is connected to the front frame 321. Joined and supported.

  Next, the construction method of the cast-in-place concrete pile 4 using the pile construction apparatus 1 of this Embodiment is demonstrated, referring FIGS. 4-8.

  Such a pile construction apparatus 1 is used for construction of cast-in-place concrete piles 4... Constructed on both sides adjacent to the railway R. 5 is a plan view of the site where the cast-in-place concrete piles 4,... Are constructed on both sides of the railway R, and FIG.

  When construction is performed adjacent to such a railway R in service, as shown in FIGS. 5 and 6, sheet piles R3, protective fences R1, R2, R4, etc. are provided on both sides of the railway R. Further, as shown in FIG. 6, the protective fence R <b> 1 is provided at a position that does not invade the building limit R <b> 5 of the railway R. That is, if the equipment does not protrude inside the building limit R5, the railway R can operate safely. Furthermore, protective fences R2 and R4 are provided outside the place where the cast-in-place concrete piles 4,.

  And the sleepers 11a, ... are arranged in the space between the protective fences R1, R2, and the rails 11, 11 are laid in parallel in accordance with the position of the construction site 40 of the cast-in-place concrete pile 4. Here, the rails 11 and 11 are laid at a position where the rail R does not protrude from the protective fence R1 when the excavator 2 and the equipment supply device 3 are run.

  Further, a stand pipe 42 and a corrugated pipe 43 are built in the construction location 40 before starting excavation.

  Subsequently, as shown in FIGS. 4 and 5, the excavator 2 and the equipment supply device 3 are opposed to each other with the construction point 40 interposed therebetween. The excavator 2 and the equipment supply device 3 constitute the pile construction device 1 according to the present embodiment.

  Moreover, after arrange | positioning the excavation apparatus 2 and the equipment supply apparatus 3 in the predetermined position of the construction location 40 vicinity, these are fixed to the rails 11 and 11 by the rail clamps 213 and 312 respectively. The excavator 2 is secured to the rails 11 and 11 by rail clamps 213 and after the upper surface of the excavation side carriage unit 21 is leveled by the height adjusting jacks 212 and so on.

  Further, a power supply unit carriage 26, a hydraulic unit carriage 27, and a suction pump carriage 28 are disposed behind the excavator 2. These carts 26-28 are also fixed to the rails 11, 11 by rail clamps (not shown).

  Further, as shown in FIG. 4, a drainage hose 232 extending from the excavator 2 and a transport hose 281 connected to a settling water tank (not shown) are connected to the suction pump carriage 28.

  Furthermore, the power supply unit carriage 26 and the hydraulic unit carriage 27 are connected to the excavator 2 and the equipment supply unit 3 by electric wires and hydraulic hoses (not shown). That is, electric power and hydraulic pressure for operating the lifting jack 233, the swivel 23, the horizontal jack 24, the winches 256, 336, the winding winch 343, and the like are supplied from the power supply unit carriage 26 and the hydraulic unit carriage 27.

  On the other hand, excavation by the excavator 2 is performed by a reverse method. In the reverse construction method, the drill pipe 35 is rotated by the swivel 23 so that the drill bit 351 connected to the lower side rotates to cut the ground.

  Therefore, first, the horizontal jacks 24 and 24 are operated so that the center of the drill bit 351 coincides with the center of the construction location 40 (the center of the stand pipe 42 and the corrugated pipe 43), and the excavation side frame portion 22 is moved to the excavation side. It moves on the carriage unit 21 to finely adjust the plane position of the swivel 23.

  Subsequently, a drill pipe 35 having a drill bit 351 attached to the lower end is connected to the swivel 23 located at the adjusted accurate position. Here, a large number of drill pipes 35,... Are loaded on the material / equipment supply device 3 and the subsequent carriage 36 (see FIG. 5) behind the materials and equipment supply apparatus 3, and these drill pipes 35,. The drilling device 2 is supplied.

  That is, the drill pipe 35 loaded on the material / equipment supply device 3 is lifted by the lateral movement unit 34 as shown in FIG. 4, and the horizontal rail 341 is arranged on the construction site 40 side (the horizontal rail 361 in the subsequent carriage 36, see FIG. 5). Are moved horizontally (transversely moved) along and are suspended on the equipment / lifting section 33 and carried to the excavator 2 side. At this time, the excavation side lifting part 25 of the excavator 2 may be used to perform further suspension or co-hanging.

  4 and 6, the length of the drill pipe 35 is adjusted by sequentially adding according to the depth of the drill hole 41. For example, when a new drill pipe 35 is added to the drill pipe 35 connected to the swivel 23 for further deep excavation, the swivel 23 and the upper end 352 of the drill pipe 35 are separated as shown in FIG. The lower end of the new drill pipe 35 suspended by the side lifting portion 33 is connected to the upper end 352, and the swivel 23 and the newly added drill pipe 35 are joined.

  On the other hand, the drilling hole 41 is filled with fresh water or muddy water, and the water pressure prevents the hole wall from collapsing during drilling. Then, the borehole water (drilling water) mixed with the excavated earth and sand is sucked from a suction port (not shown) of the drill bit 351, the drill pipe 35,..., The swivel 23, the drain hose 232, and the suction pump carriage 28. And discharged through a transfer hose 281 to a settling water tank (not shown). Moreover, the water conveyed by the water pipe 29 from the supernatant of the settling water tank is appropriately supplied into the excavation hole 41 from the discharge port 29a. A corrugated pipe 43 and a stand pipe 42 are disposed above the excavation hole 41, and a high water pressure can be secured by raising the water level to the upper part of the excavation hole 41.

  Then, excavation is performed to a predetermined depth in this way, and most of the excavated sediment is discharged from the excavation hole 41, and then the drill pipe 35,... And the drill bit 351 are taken out from the excavation hole 41.

  Thereafter, the reinforcing bar 44 is inserted into the excavation hole 41 and concrete is placed. There are a plurality of methods for inserting the reinforcing bar 44, and in this embodiment, a part of the method is used. A method of using the mobile crane 5 will be described, and other methods will be described in the embodiments.

  In the method described in the present embodiment, the mobile crane 5 is used to move the reinforcing bar 44 over the construction site 40. The work using the mobile crane 5 is performed at night when the operation of the railway R is completed.

  First, the reinforcing bar 44 that has been transported to the site by a truck or the like is moved to the sky above the construction site 40 by the mobile crane 5 as shown in FIG. The standard of the mobile crane 5 may be such that the integral reinforcing bar 44 can be lifted.

  Further, FIG. 7 shows a process of joining a new reinforcing bar rod 44 to the reinforcing bar rod 44 supported by the temporary support member 45 spanned over the upper end of the excavation hole 41. This newly supplied rebar rod 44 is suspended by the mobile crane 5 until it abuts the upper end of the rebar rod 44 already inserted into the excavation hole 41 after being carried over the construction point 40 and welded. Alternatively, the upper and lower reinforcing bar rods 44 are joined to each other by a joint tool.

  Then, as shown in FIG. 8, the hook 252 of the excavation side lifting part 25 of the excavator 2 and the hook 332 of the equipment side lifting part 33 are connected to the rebar rod 44 after joining, and the mobile crane Change from 5.

  In this way, the temporary support member 45 is removed from the reinforcing bar rods 44 and 44 suspended from the excavation side lifting portion 25 and the equipment / material side lifting portion 33, and the winches 256 and 336 are operated to make the excavation hole 41. Reinforcement rods 44 and 44 are lowered inside. Here, by synchronizing the two winches 256 and 336, the reinforcing bar rods 44 and 44 can be lowered without being tilted.

  The reinforcement rod 44 is added and lowered until the rebar rods 44 are inserted until reaching a predetermined depth of the excavation hole 41. And the earth and sand which settled in the excavation hole 41 in which the rebar rod 44, ... was inserted is removed with a muddy water pump etc., and the drill pipe 35, ... is inserted in the excavation hole 41 again. Also when the drill pipes 35 are inserted, the excavation side lifting unit 25 of the excavator 2 and the equipment side lifting unit 33 of the equipment supply unit 3 are used.

  The drill pipes 35,... Inserted in this step are used as tremey pipes for placing concrete. Concrete is poured from the upper ends of the drill pipes 35,..., And conveyed downward by the drill pipes 35,.

  Further, the drill pipe 35 and the stand pipe 42 are sequentially removed according to the concrete launch status. Also in this removal, the excavation side lifting part 25 and the equipment side lifting part 33 can be used, and the drill pipe 35 and the stand pipe 42 removed using them are the equipment side carriage of the equipment supply unit 3. The unit 31 is loaded.

  Next, the effect | action of the construction method of the pile construction apparatus 1 of this Embodiment and the cast-in-place concrete pile 4 using the same is demonstrated.

  The pile construction apparatus 1 according to the present embodiment configured as described above includes the excavator 2 for excavating the excavation hole 41 for constructing the cast-in-place concrete pile 4, the equipment such as the drill pipe 35 used for excavation, and the reinforcing bars. A material / equipment supply device 3 for supplying a material such as a basket 44 is provided.

  The excavator 2 and the equipment supply device 3 are provided with wheels 211 and 311, and can move quickly to the construction site 40 where the cast-in-place concrete pile 4 is constructed.

  In addition, since equipment and materials necessary for construction can be mounted in advance on the excavator 2 and the equipment supply device 3, construction can be started immediately after reaching the construction location 40.

  Further, since the excavator 2 has an excavation side carriage unit 21 and an excavation side lifting unit 25, and the equipment supply unit 3 has an equipment side cart 31 and an equipment lifting unit 33, Equipment can be transported and suspended without using a crane.

  For this reason, even in a place adjacent to the railway R during business hours where the mobile crane 5 cannot be used, it is possible to efficiently perform excavation, concrete placement, etc. necessary for constructing the cast-in-place concrete pile 4 Can be done.

  Furthermore, by providing the excavator 2 with height adjustment jacks 212,... For adjusting the height of the upper surface of the excavation side carriage unit 21, the upper surface can be easily leveled. For example, in the railway R, there is a cant in a curved portion, and even if the rails 11 and 11 are laid, the height on the outer peripheral side and the inner peripheral side may be different. In addition, height differences such as ascending and descending slopes may occur in the extending direction of the rails 11 and 11. If the rails 11 and 11 have different heights as described above, the top surface of the excavation side carriage 21 of the excavator 2 installed on the rails 11 is inclined, and a pile is constructed obliquely when excavation is performed as it is. There is a risk.

  Therefore, by adjusting the height with the height adjusting jacks 212,... And preliminarily keeping the upper surface of the excavation side carriage unit 21 horizontal, the subsequent excavator unit can be easily aligned and controlled in posture. Can do.

  Further, by finely adjusting the plane position of the excavation side frame portion 22 by the horizontal jack 24, the swivel 23 can be arranged at an accurate position, and the excavation hole 41 having an accurate shape can be formed.

  In addition, the plane position adjusting means is composed of two horizontal jacks 24 and 24 that can adjust the amount of expansion and contraction independently, so that the excavation side frame portion 22 is moved in the front-rear direction and the rotation direction on the excavation side carriage portion 21. It becomes possible to make it. In other words, the two horizontal jacks 24, 24 are arranged across the center of the excavation side carriage unit 21, and the excavation side frame pushed out by the horizontal jacks 24, 24 by changing the expansion / contraction amount of the left and right horizontal jacks 24, 24. The part 22 can be tilted in the plane. For this reason, not only the front-rear direction but also the lateral position adjustment is possible, and fine adjustment to an accurate excavation position can be easily performed.

  Furthermore, by providing the rail clamp 213 for gripping the rail 11 on the lower surface side of the excavation side carriage part 21, a reaction force required when excavation can be easily ensured. That is, the ground reaction force acting on the drill bit 351 during excavation is transmitted through the drill pipes 35,. And when this pushing-up force exceeds the weight of the excavator 2, the excavator 2 may be lifted or tilted.

  On the other hand, by holding the rail 11 with the rail clamp 213, the excavator 2 is fixed to the rail 11, and it is possible to prevent lifting and tilting. If the reaction force is insufficient even with the gripping force of the rail clamp 213, adjustment is performed by loading a counterweight or integrating the excavator 2 and the equipment supply device 3 with a connecting member (not shown). can do.

  Moreover, in the construction method of the cast-in-place concrete pile 4 of the present embodiment, when the cast-in-place concrete pile 4 is constructed in a place adjacent to the railway R, the rail is placed at a position that does not invade the building limit R5 of the railway R in advance. 11 and 11 are laid.

  Therefore, even if the excavator 2 and the equipment supply device 3 are moved during the business hours of the railway R and the construction work of the cast-in-place concrete pile 4 is performed, the railway R is not affected, and it is safe and efficient. Work can be carried out.

  Moreover, positioning can be quickly performed by laying the rails 11 and 11 according to the construction location 40 of the cast-in-place concrete pile 4.

  Furthermore, if the group of rebar bars 44,... Is hung together by the excavation side lifting part 25 of the excavator 2 and the equipment / lifting part 33 of the equipment supply unit 3, the mobile crane 5 is The size of the rebar rod 44 may be large enough to be lifted, and the construction time and construction place are less restricted as in the case of using a large crane.

  Hereinafter, Example 1 of the above-described embodiment will be described. The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  In the first embodiment, the case where the reinforcing bar 44 is carried by the equipment supply device 6 and inserted into the excavation hole 41 will be described with reference to FIG. In addition, since it is the same as that of the said embodiment, the process until it forms the excavation hole 41 and the excavation apparatus 2 is abbreviate | omitted.

  As shown in FIG. 9, the equipment / equipment supply device 6 includes an equipment / equipment side carriage unit 61 provided with wheels 611 as movement means that enables movement to the construction site 40, and The equipment / material side frame 62 fixed to the equipment / equipment side frame 62, the equipment / material lifting section 63 suspended from the equipment / equipment side frame 62, and the lateral movement section 64 for laterally moving the equipment on the equipment / truck side 61 , Mainly composed.

  The material / equipment-side trolley 61 is a portion serving as a base of the material / equipment supply device 6, and a loading platform is formed by attaching a steel plate, a wire mesh, or the like on the upper surface of the frame-shaped member. In addition, a plurality of wheels 611,. The wheel 611 is a railway bogie wheel for running the rail 11. Note that this equipment and equipment supply device 6 is also towed or pushed by the driving vehicle even if it is a self-propelled type equipped with a driving force source, similarly to the equipment and equipment supply device 3 described in the above embodiment. A moving system may be used.

  In addition, rail clamps 612,... As gripping portions are provided at both ends and the center of the material / material-side carriage unit 61. The rail clamp 612 is opened so as not to contact the rail 11 when the equipment supply device 6 is moved. Moreover, after the equipment supply device 6 moves to a desired position, the rail clamp 612 is closed and the rail 11 is gripped. By placing such rail clamps 612,... At a plurality of locations on the equipment-side trolley 61, not only the drill pipe 35 but also the heavy equipment such as the rebar rod 44 is lifted. In addition, the equipment supply device 6 can be prevented from moving or floating in the front-rear direction, the left-right direction, and the up-down direction.

  In addition, the equipment / material-side frame section 62 disposed on the equipment / equipment-side carriage section 61 is a frame that attaches and supports the equipment / material-side lifting section 63 and the lateral movement section 64. Further, the material / equipment-side frame 62 is formed of a frame material in a large rectangular parallelepiped shape so that a large reinforcing bar 44 can be loaded.

  Further, an arm 621 projecting forward is attached to the top of the equipment / material-side frame 62. Then, the material / material-side lifting part 63 is suspended from the tip of the arm 621.

  The equipment / lifting portion 63 is attached to a block 631 that is lifted from the tip of the arm 621, a hook 632 provided on the block 631, a pulley 633 that is attached to the tip of the arm 621, and a rear end of the arm 621. The pulley 634 mainly includes a winch 636 installed behind the pulley 634, and a wire rope 635 that is hooked on the block 631, bridged on the pulleys 633 and 634, and wound around the winch 636.

  That is, when the wire rope 635 is sent out from the winch 636, the block 631 is lowered, and when the wire rope 635 is taken up by the winch 636, the block 631 is raised, so that the materials and equipment moored on the hook 632 can be raised and lowered. .

  Further, the lateral movement unit 64 includes a horizontal rail 641 extending in the front-rear direction (longitudinal direction) on the equipment-side carriage unit 61, a horizontal slider 642 that moves along the horizontal rail 641, and the horizontal slider 642. The hoisting winch 643 suspended from the hoisting wire 643 and the hoisting wire 644 for connecting the hoisting winch 643 and materials such as the reinforcing bar 44 are mainly constituted.

  The horizontal slider 642 includes a pair of rollers that sandwich the horizontal rail 641 in which grooves are formed. The horizontal slider 642 may be slid by human power or slid by power.

  Further, the horizontal rail 641 projects forward from the arm 621 in plan view. As shown in FIG. 9 (c), the amount of overhang is preferably formed to a length that can move to just above the excavation hole 41 when the reinforcing bar 44 is erected.

  Next, conveyance and erection of the reinforcing bar 44 will be described with reference to FIGS. The equipment supply device 6 is used to supply the drill pipe 35 during excavation.

  First, as shown in FIG. 9A, the reinforcing bar 44 is loaded sideways on the equipment / material-side cart unit 61 and moved to the construction location 40. Then, after arriving at a predetermined position, the rail 11 is gripped by the rail clamps 612... And the lower end of the suspension wire 644 is connected to the approximate center of the reinforcing bar 44. Although not shown in the figure, the depth side of the reinforcing bar 44 is also connected by a suspension wire 644 in the same manner as the front side.

  Subsequently, the horizontal bar 642 moves the reinforcing bar 44 forward in a horizontal direction, and when the horizontal slider 642 reaches just above the construction site 40, the hoisting wire 644 is moved by the winding winch 643 while pushing down the rear end of the reinforcing bar 44. Roll up gradually. Then, as shown in FIG. 9 (b), the reinforcing bar rod 44 gradually rotates and gets up.

  Then, as shown in FIG. 9C, the rebar bar 44 is completely upright immediately above the construction site 40, and the rebar bar already inserted into the excavation hole 41 as described in the above embodiment. The hoisting winch 643 is operated and suspended until it abuts on the upper end of 44, and the two are joined by welding or a fitting.

  After that, the hook 632 of the equipment / lifting side 63 and the hook 252 of the excavating side 25 are connected to the reinforcing bar 44 to support the reinforcing bar 44. Then, the winches 256, 636 are operated in synchronism to lower the rebar rods 44,...

  The material / equipment supply device 6 according to the first embodiment configured as described above can supply not only the drill pipes 35,.

  For this reason, all the work necessary for the construction of the cast-in-place concrete pile 4 such as excavation, building of the reinforcing bar 44, and placing of concrete can be performed without using the mobile crane 5. The work can be performed even during business hours, and the cast-in-place concrete pile 4 can be completed at an early stage. Furthermore, the reinforcing bar 44 can be easily built even in places where the use of the crane is not possible or where the use is limited or narrow.

  Moreover, even if the pile length becomes long by carrying it sequentially by the following trolley | bogie (illustration omitted), it can respond.

  Other configurations and functions and effects are substantially the same as those in the above-described embodiment, and thus description thereof is omitted.

  Hereinafter, Example 2 of the above-described embodiment will be described. The description of the same or equivalent parts as those described in the above embodiment or Example 1 will be given the same reference numerals.

  In the second embodiment, the configuration of a pile construction apparatus 1A provided with gear support portions 7 and 7 as an excavation side lifting portion and an equipment / lifting portion will be described with reference to FIG. The steps up to forming the excavation hole 41 and the excavation apparatus 2A are the same as those in the above embodiment, and the same procedure as in Example 1 is performed until the reinforcing bar 44 is conveyed and suspended above the excavation hole 41. Therefore, the description is omitted.

  In the pile construction apparatus 1A described in the second embodiment, gear support portions 7 and 7 for supporting the reinforcing bar 44 and inserting it into the excavation hole 41 are provided in front of the excavation apparatus 2A and the equipment supply apparatus 6A, respectively. It has been.

  The gear support 7 is mainly composed of a gear 71 and a motor 72 as a driving force source for rotating the gear 71. Further, the gears 71, 71 protrude from the front end surfaces of the excavation side carriage unit 21 and the material / equipment side carriage unit 61 toward the excavation hole 41. The gear support portions 7 and 7 are configured to be detachable, and may be attached to the excavation side carriage unit 21 and the material / equipment side carriage unit 61 after excavation is completed.

  On the other hand, the reinforcing bar rod 44 is mainly composed of main bars 44a arranged in the vertical direction (vertical direction) and circular band bars 44b arranged orthogonally. The Then, the rebar bar 44 is supported by the gear 71 being engaged with the band bars 44b of the rebar bar 44 configured as described above. In addition, the connection part of the band reinforcement 44b and the main reinforcement 44a which mesh | engage the gearwheel 71 is reinforced as needed.

  And the reinforcing bar 44 is conveyed by the method demonstrated in Example 1, is made to stand upright, and is joined to the upper end of the reinforcing bar 44 (illustrated with a two-dot chain line) in the excavation hole 41 as shown in FIG. Further, the rebar bars 44, 44 integrated by joining are supported from both sides by the gear support portion 7 of the excavator 2 and the gear support portion 7 of the equipment supply device 6.

  Further, in this state, when the motor 72 on the excavator 2 side is rotated in the clockwise direction and the motor 72 on the equipment supply unit 6A side is rotated in the counterclockwise direction, the reinforcing bar rods 44 and 44 are sent out downward to form the excavation hole. 41 is inserted. Here, by synchronizing the two motors 72, 72, the reinforcing bar rods 44, 44 can be lowered without being inclined.

  The pile construction apparatus 1A of the second embodiment configured as described above is provided with gear support portions 7 and 7 for supporting the reinforcing bar 44 on the excavation side carriage unit 21 and the material / equipment side carriage unit 61. It is possible to stably support and feed the reinforcing bar rod 44 inserted into the frame.

  That is, the reinforcing bar rods 44 are sequentially joined in the longitudinal direction by welding or the like until the length required for the pile to be constructed, so that the number of reinforcing bar rods 44,. The weight increases and the support and delivery work becomes difficult.

  On the other hand, the gear support 7 of the excavator 2 and the gears 71 and 71 of the gear support 7 of the equipment supply device 6 are meshed between the strips 44b and 44b, and the reinforcing bar 44 is supported from both sides. The rebar bar 44 can be suspended in the excavation hole 41 without using the mobile crane 5 or the temporary support member 45.

  Moreover, if the gears 71 and 71 are rotated by the driving force of the motors 72 and 72 and the reinforcing bar 44 is sent out, the reinforcing bar 44 can be inserted into the excavation hole 41 at a stable and constant speed.

  Other configurations and functions and effects are substantially the same as those of the above-described embodiment or Example 1, and thus description thereof is omitted.

  The best embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment and example, and the design does not depart from the gist of the present invention. Such modifications are included in the present invention.

  For example, in the above-described embodiments and examples, the moving means has been described as the wheels 211, 311 and 611 running on the rail 11, but the moving means is not limited thereto, and a tire that can run without a track is used as the moving means. There may be.

  In the above embodiment, the two horizontal jacks 24, 24 are arranged as the planar position adjusting means. However, the present invention is not limited to this, and the number of horizontal jacks 24 may be one or three or more. Furthermore, you may adjust the position of the excavation side frame part 22 by rotating the wheel 242 by human power, without using power, such as the horizontal jack 24. FIG.

  Further, in the above embodiment, the construction in the place adjacent to the railway R has been described. However, the construction is not limited to this, and the height is limited to a narrow place where the roadside or the mobile crane 5 cannot enter or the sky. Even if it is a place where a crane cannot be used, the cast-in-place concrete pile 4 can be constructed | assembled by using the pile construction apparatus 1,1A of this invention.

  Further, in the second embodiment, the reinforcing bar 44 is supported and sent out by meshing the band 71 b of the reinforcing bar 44 with the gear 71. However, the present invention is not limited to this. 44. Protrusions or the like that can mesh with the gear 71 are provided on the main bars 44a,..., And the reinforcing bar 44 is supported and delivered by the gear support parts 7 and 7 via the main bars 44a,. It may be.

It is a side view of the excavation apparatus which comprises the pile construction apparatus of the best embodiment of this invention. It is a top view of a drilling apparatus. It is a perspective view of the materials and equipment supply apparatus which comprises the pile construction apparatus of the best embodiment of this invention. It is a side view explaining the structure of the pile construction apparatus of the best embodiment of this invention. It is a top view explaining the structure of the pile construction apparatus of the best embodiment of this invention. It is a cross-sectional view explaining the structure of the pile construction apparatus of the best embodiment of this invention. It is a side view explaining the process of arrange | positioning a reinforcing bar rod using a mobile crane. It is a side view explaining the process of inserting a reinforcing bar rod into a drilling hole. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the materials and equipment supply apparatus of Example 1, Comprising: (a) is explanatory drawing of the process of conveying a reinforcing rod, (b) is explanatory drawing of the state in the middle of raising a reinforcing rod, (c) is a figure. It is explanatory drawing of the state which made the reinforcement bar erect. It is a side view explaining the process of inserting the reinforcing bar rod of Example 2 into an excavation hole.

Explanation of symbols

1,1A Pile construction device 11 Rail 2,2A Excavation device 21 Excavation side bogie part 211 Wheel (moving means)
212 Height adjustment jack (height adjustment means)
213 Rail clamp (grip)
22 Excavation side frame part 23 Swivel (excavator part)
24 Horizontal jack (planar position adjustment means)
25 Excavation-side lifting section 3 Equipment / equipment supply equipment 31 Equipment / equipment-side cart section 311 Wheel (moving means)
312 Rail clamp (grip)
32 Equipment and material side frame section 33 Equipment and equipment side lifting section 34 Horizontal movement section 35 Drill pipe (material and equipment)
4 Cast-in-place concrete pile 40 Construction site 41 Excavation hole 44 Reinforcement rod (materials)
6,6A Material / Equipment Supply Unit 61 Material / Equipment Side Dolly Unit 611 Wheel (Moving means)
612 Rail clamp (grip)
62 Material and equipment side frame 63 Material and equipment side lifting part 64 Lateral movement part 7 Gear support part 71 Gear 72 Motor R Railway R5 Building limit

Claims (8)

A pile construction device used when constructing cast-in-place concrete piles,
A drilling device arranged on one side across the construction site of the cast-in-place concrete pile, and a material and equipment supply device arranged on the other side,
The excavation apparatus includes an excavation side carriage portion provided with a moving means that enables movement to the construction site, an excavation side frame portion formed on the excavation side carriage portion, and an upper and lower sides of the excavation side frame portion. An excavator part that is slidably mounted in a direction, and an excavation side lifting part that is attached to the excavation side frame part or the excavation side carriage part,
The equipment supply device includes a material / equipment side carriage section provided with a movement means that enables movement to the construction site, an equipment / equipment side frame section formed on the equipment / equipment side carriage section, and the equipment / equipment side frame section. An equipment-side lifting section attached to the equipment-side frame section or the equipment-equipment-side carriage section, and a lateral movement section that laterally moves the equipment-equipment on the equipment-equipment-side carriage section ,
As the excavation side lifting part and the equipment side lifting part, a gear to be engaged with a reinforcing bar on the construction site side of the cast-in-place concrete pile of the excavation side carriage part and the equipment side truck part, and pile construction device according to claim Rukoto gear support portion is provided that includes a motor for rotating the.   The pile construction apparatus according to claim 1, wherein a height adjusting means for adjusting an upper surface height of the excavation side carriage part is provided in the excavation apparatus.   The excavation side frame part and the excavation side carriage part are formed separately, and planar position adjusting means for adjusting the planar position of the excavation side frame part on the excavation side carriage part is provided. Item 3. A pile construction apparatus according to item 1 or 2.   The horizontal jacks are respectively disposed on both sides of the excavation side carriage part as the plane position adjusting means, and the horizontal jacks can be independently adjusted for expansion and contraction. The pile construction device described.   The moving means of the excavation apparatus is a wheel for running a rail, and gripping means for gripping the rail is provided on the lower surface side of the excavation side carriage part. The pile construction apparatus according to item. A method for constructing a cast-in-place concrete pile using the pile construction device according to any one of claims 1 to 5 ,
The excavator and the equipment supply device are moved by the moving means toward the construction site of the cast-in-place concrete pile,
When excavating with the excavator, supply the equipment necessary for excavation with the equipment supply device,
A method for constructing a cast-in-place concrete pile, comprising inserting a reinforcing bar jointed together by the excavation side lifting part of the excavation device and the material / equipment side lifting part of the equipment supply unit into an excavation hole . A method for constructing a cast-in-place concrete pile performed using the pile construction device according to claim 5 at a location adjacent to a railway,
Laying rails at a position that does not violate the building limits of the railway when the excavator and the equipment supply device move,
The excavator and the equipment supply device are run along the rails respectively toward the construction site of the cast-in-place concrete pile,
A construction method of a cast-in-place concrete pile, wherein the rail is gripped by the grip portion before reaching the construction site and starting excavation. It is a construction method of a cast-in-place concrete pile performed using the pile construction apparatus according to claim 1 ,
The excavator and the equipment supply device are moved by the moving means toward the construction site of the cast-in-place concrete pile,
When excavating with the excavator, supply the equipment necessary for excavation with the equipment supply device,
After the excavation hole is formed, the reinforcing bar rod is supported by the gear support portion of the excavator and the gear support portion of the equipment supply device,
A method for constructing a cast-in-place concrete pile, wherein the steel bar is sent out to the excavation hole by rotating the motor.

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