JP5649752B1 - Steel pipe pile driving aid - Google Patents

Abstract

A steel pipe pile driving assisting tool capable of obtaining a supporting force exceeding the capacity of a steel pipe pile driving apparatus is provided. A driving assisting tool main body 10 capable of mounting a weight for applying a vertical load to a steel pipe pile W driven by hammering of a steel pipe pile driving apparatus and assisting the ability of the steel pipe pile driving apparatus by the vertical load of the weight. Is provided. The placing assisting tool main body 10 has a sliding contact surface 11 that is in sliding contact with one side in the diameter direction of the steel pipe pile W, and protrudes radially outward from the sliding contact surface 11 to place a weight. And a fixing means 13 for fixing the sliding contact surface 11 in a state of being pressed against the steel pipe pile W. The fixing means 13 penetrates in the radial direction of the steel pipe pile W at the distal end portion of the arm portion 14 extending from the one end in the circumferential direction of the sliding contact surface 11 along the outer peripheral surface of the steel pipe pile W to the other side in the diameter direction. A screw hole 15 and a bolt that is screwed into the screw hole 15 and has a tip abutting against the other diameter side of the outer peripheral surface of the steel pipe pile W to press-contact the sliding contact surface 11 to one diameter direction of the outer peripheral surface of the steel pipe pile W Member 16. [Selection] Figure 2

Description

  The present invention relates to a driving aid that is attached to a steel pipe pile when the steel pipe pile is driven into the soil by vibration or hammering from a hammer of a steel pipe pile driving device.

  Conventionally, a steel pipe pile driving device is attached to the tip of a crane or the like of a work machine, and the steel pipe pile is driven into the ground by repeated vibration of hammer or vibration of the hammer mounted on the steel pipe pile driving device. (For example, refer to Patent Document 1).

Japanese Patent No. 3798859

  By the way, the supporting force of the steel pipe pile driven into the soil depends on the ability of the steel pipe pile driving device. That is, the steel pipe pile is driven deeper into the soil as the ability of the steel pipe pile driving device is higher, and the steel pipe pile is easily digged into the target hard ground to increase the supporting force.

  However, the steel pipe pile driving device is expensive depending on its capacity. For this reason, at present, a steel pipe pile driving device with the capacity according to the budget is selected, and the steel pipe pile driving device is driven into the soil using this selected steel pipe pile driving device, so that it can be obtained according to the capacity of the steel pipe pile driving device. The actual situation is to provide steel pipe piles with the required bearing capacity.

  This invention is made | formed in view of this point, The place made into the objective is to provide the driving assistance tool of the steel pipe pile which can obtain the support force more than the capability of a steel pipe pile driving device.

  In order to achieve the above object, the solution provided by the present invention is a load body that applies a vertical load to a steel pipe pile when the steel pipe pile is driven into the soil by vibration or hammering from a hammer of the steel pipe pile driving device. A steel pipe pile driving tool main body that is attachable and that assists the ability of the steel pipe pile driving device by a vertical load from the load body added to the steel pipe pile is provided.

In order to achieve the above object, the solution provided by the present invention is a load body that applies a vertical load to a steel pipe pile when the steel pipe pile is driven into the soil by vibration or hammering from a hammer of the steel pipe pile driving device. A steel pipe pile driving aid main body that can be mounted and assists the ability of the steel pipe pile driving device by a vertical load from the load applied to the steel pipe pile . And the said driving | operation assisting tool main body is mounted | worn so that it may protrude to the radial direction outer side in the axial direction lower part side of a steel pipe pile, and the sliding contact which slidably contacts to the one diameter direction side of the outer peripheral surface of the said steel pipe pile A mounting portion that protrudes radially outward of the steel pipe pile from the sliding contact portion, and the load body can be placed on the outer periphery of the steel pipe pile from the sliding contact portion of the mounting portion. And a fixing means that extends to the other side in the diameter direction along the surface and fixes the sliding contact portion in a state of being pressed against one side in the diameter direction of the outer peripheral surface of the steel pipe pile .

Further, the fixing means extends from one end or both ends in the circumferential direction of the sliding contact portion to the other diametrical side along the outer peripheral surface of the steel pipe pile, and has a tip portion on the other diametrical side of the outer peripheral surface of the steel pipe pile. An arm portion that is positioned, a screw hole that penetrates in a radial direction of the steel pipe pile at a tip portion of the arm portion, and a screw hole that is screwed into the screw hole, and the tip abuts against the other side in the diameter direction of the steel pipe pile. And a bolt member that presses the contact portion to one side in the diameter direction of the steel pipe pile.

In contrast, the fixing means extends from one end or both ends in the circumferential direction of the sliding contact portion to the other side in the diameter direction along the outer peripheral surface of the steel pipe pile, and to the other side in the diameter direction of the outer peripheral surface of the steel pipe pile. The arm part which has the contact part which touches is provided, The said arm part is bent by the substantially U shape with respect to the said mounting part by the side view of the said steel pipe pile. The sliding contact portion of the mounting portion and the contact portion of the arm portion each have a gap that is slidable with respect to the outer peripheral surface of the steel pipe pile when both are in a horizontal positional relationship with each other. When the load body is placed on the placement portion, the placement portion becomes substantially horizontal and causes a difference in height between the sliding contact portion of the previous placement portion and the contact portion of the arm portion. You may press-contact with the outer peripheral surface of a steel pipe pile.

Further, in order to achieve the above object, the other solution provided by the present invention is to apply a vertical load to the steel pipe pile when the steel pipe pile is driven into the soil by vibration or hammering from the hammer of the steel pipe pile driving device. A load body to be mounted can be mounted, and a steel pipe pile driving assisting tool main body that assists the ability of the steel pipe pile driving device by a vertical load from the load body added to the steel pipe pile is similarly provided. And the said driving assistance tool main body is formed in the substantially cylindrical shape, and is provided with the two division pieces divided | segmented in the circumferential direction, and the substantially semicircular disk-shaped mounting part is respectively provided at the upper end of each division piece. Each of the divided pieces is provided with a fastening seat at one end adjacent to each other, and the other end adjacent to each other is supported so as to be rotatable about a hinge axis extending in the vertical direction, The mounting portion is configured so that the load body is placed in a substantially annular shape when the fastening seats are fastened to each other by a bolt member and a nut member at one end of each divided piece. Yes.
Further, in order to achieve the above object, the other solution provided by the present invention is to apply a vertical load to the steel pipe pile when the steel pipe pile is driven into the soil by vibration or hammering from the hammer of the steel pipe pile driving device. A load body to be mounted can be mounted, and a steel pipe pile driving assisting tool main body that assists the ability of the steel pipe pile driving device by a vertical load from the load body added to the steel pipe pile is similarly provided. And the said driving assistance tool main body is formed in the substantially cylindrical shape, and is provided with the two division pieces divided | segmented in the circumferential direction, and the substantially semicircular disk-shaped mounting part is respectively provided at the upper end of each division piece. Prepare. Furthermore, each of the divided pieces is provided with clamping seats at one end and the other end adjacent to each other, and the mounting portion is arranged between the clamping seats at one end and the other end of each divided piece. When the bolt is tightened with a bolt member and a nut member, the load body is placed in a substantially annular shape.
Further, in order to achieve the above object, the other solution provided by the present invention is to apply a vertical load to the steel pipe pile when the steel pipe pile is driven into the soil by vibration or hammering from the hammer of the steel pipe pile driving device. A load body to be mounted can be mounted, and a steel pipe pile driving assisting tool main body that assists the ability of the steel pipe pile driving device by a vertical load from the load body added to the steel pipe pile is similarly provided. And the said driving | operation assisting tool main body is equipped with the bottomed cylindrical cap covered on the upper end of the said steel pipe pile, The said load body is suspended by this cap on the outer side of the said steel pipe pile. .
Furthermore, in order to achieve the above-mentioned object, the other solution provided by the present invention is to apply a vertical load to the steel pipe pile when the steel pipe pile is driven into the soil by vibration or hammering from the hammer of the steel pipe pile driving device. A load body to be mounted can be mounted, and a steel pipe pile driving assisting tool main body that assists the ability of the steel pipe pile driving device by a vertical load from the load body added to the steel pipe pile is similarly provided. And the said driving | operation assisting tool main body is equipped with the bottomed cylindrical cap covered on the upper end of the said steel pipe pile, The said load body is suspended by the inner side of the said steel pipe pile at this cap, It is characterized by the above-mentioned. .

  In addition, by mounting the driving aid body so that it protrudes radially outward on the lower side in the axial direction of the steel pipe pile, the vertical load from the driving aid body balances from the radially outer side of the steel pipe pile. Works well and can drive steel pipe piles smoothly.

  Furthermore, the distal end portion of the arm portion extending from the one end or both ends in the circumferential direction of the sliding portion of the mounting portion on the one side in the diameter direction of the steel pipe pile to the other side in the diameter direction along the outer peripheral surface of the steel pipe pile In this case, a bolt member is screwed into a screw hole penetrating in the radial direction of the steel pipe pile, and the tip of the bolt member is brought into contact with the other side in the diameter direction of the outer peripheral surface of the steel pipe pile so that the sliding contact portion of the mounting portion is the steel pipe pile. The mounting portion is fixed to the steel pipe pile in a state where the sliding contact portion is in pressure contact with the one side in the diameter direction of the outer peripheral surface of the steel pipe pile. As a result, by loosening or tightening the bolt member, the driving aid can be easily fixed at an arbitrary position in the axial direction of the steel pipe pile, and the driving aid is attached to the steel pipe pile with a simple work procedure. be able to.

  On the other hand, an arm portion having a contact portion that extends along the outer peripheral surface of the steel pipe pile from one end or both ends in the circumferential direction of the sliding portion of the mounting portion on the one side in the diameter direction of the steel pipe pile and contacts the other side in the diameter direction. The steel pipe pile is bent when the steel pipe pile is bent in a substantially U shape in a side view of the mounting part, and the sliding part of the mounting part and the contact part of the arm part are in a horizontal positional relationship with each other. Each having a slidable gap with respect to the outer peripheral surface of the mounting portion, and when the load body is mounted on the mounting portion, the mounting portion is substantially horizontal, and the sliding portion of the mounting portion and the contact portion of the arm portion By causing a height difference between the two, the both are pressed against the outer peripheral surface of the steel pipe pile, and the mounting portion is fixed to the steel pipe pile. As a result, the loading body is lowered from the mounting portion and the sliding contact portion of the mounting portion and the contact portion of the arm portion are in a horizontal positional relationship with each other, so that the driving aid can be placed at an arbitrary position in the axial direction of the steel pipe pile. If it is moved and a load body is placed on the mounting portion at an arbitrary position, the driving aid can be easily fixed, and the driving aid can be attached to the steel pipe pile by a simple work procedure.

It is explanatory drawing which shows the working condition in the driving | running site of the steel pipe pile which equipped with the driving | operation assistance tool which concerns on the 1st Embodiment of this invention. It is a top view of the state which mounted | wore the steel pipe pile with the driving | operation assistance tool of FIG. FIG. 3 is a perspective view of the driving aid of FIG. 2. It is a side view of the state temporarily mounted to the steel pipe pile, without placing a weight on the driving assistance tool which concerns on the 2nd Embodiment of this invention. It is a side view of the state which mounted the weight on the driving | operation assistance tool of FIG. 4, and was attached to the steel pipe pile. FIG. 6 is a plan view of the driving aid of FIG. 5. It is a top view of a driving aid concerning a modification of a 2nd embodiment. It is a side view of the state temporarily mounted to the steel pipe pile, without putting a weight on the driving assistance tool which concerns on the 3rd Embodiment of this invention. FIG. 9 is a side view of a state in which a weight is placed on the driving aid of FIG. 8 and mounted on a steel pipe pile. FIG. 10 is a plan view of the driving aid of FIG. 9. It is a top view of a driving aid concerning a modification of a 3rd embodiment. It is a side view of the state which mounted | wore the steel pipe pile with the driving | operation assistance tool which concerns on the 4th Embodiment of this invention. It is a top view of the driving assistance tool of FIG. It is a top view of a driving aid concerning a modification of a 4th embodiment. It is a side view of the state which mounted | wore the steel pipe pile with the driving | operation assistance tool which concerns on the 5th Embodiment of this invention. It is the bottom view which looked at the driving aid of Drawing 15 from the lower part. It is a bottom view of a driving aid concerning a modification of a 5th embodiment. It is a side view of the state which mounted | wore the steel pipe pile with the driving | operation assistance tool which concerns on the 6th Embodiment of this invention. It is the side view partially notched in the state with which the driving assistance tool which concerns on the 7th Embodiment of this invention was mounted | worn with the steel pipe pile.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: The thing of the character which limits the technical scope of this invention is not.

  FIG. 1: has shown explanatory drawing which shows the working condition in the driving field of the steel pipe pile which equipped with the driving assistance tool which concerns on the 1st Embodiment of this invention. This driving site is a narrow space that is blocked by buildings.

  In FIG. 1, W is a steel pipe pile to which the driving aid 1 according to the first embodiment of the present invention is attached. A plurality of the steel pipe piles W are prepared, and steel pipe piles are added while adding each steel pipe pile W. The pile driving device K is driven into the soil one after another by hitting the hammer K1. In this case, as the steel pipe pile driving device K, a portable hydraulic hammer type device is used because the driving site is a narrow space and a large in-vehicle type steel pipe pile driving device cannot enter. Further, the steel pipe piles W are successively added until the tip reaches a strong support ground formed by consolidating gravelly soil or the like below the surface layer of the ground G.

  As each steel pipe pile W, the thing of the length 1500mm-1800mm formed in the cross-section annular | circular shape, and the internal diameter was set to 105.7 mm and the outer diameter was respectively set to 114.3 mm is used. Each steel pipe pile W is not limited to this, and may have other various sizes.

  The steel pipe pile driving device K includes a pair of left and right manual operation handles K3 and K3 provided on both sides of the device main body K2, and a hammer K1 protruding from the lower end of the device main body K2 is attached to the uppermost steel pipe pile W. The impact applied from the upper end of the uppermost reinforcing pile W is transmitted to the tip of the lowermost reinforcing pile W in a state of being fitted in the recess of the cap 18 attached to the upper end. Since the steel pipe pile driving device K is known per se, the details of the internal structure are omitted. Moreover, 19 in FIG. 1 is a joint that joins the upper and lower steel pipe piles W, W together.

  FIG. 2 is a plan view showing a state in which the driving aid 1 is mounted on the steel pipe pile W, and FIG. 3 is a perspective view of the driving aid 1.

  The driving aid 1 is a weight as a load body that applies a vertical load to the uppermost steel pipe pile W located on the ground when the steel pipe pile W is driven into the soil by hammering the hammer K1 of the steel pipe pile driving device K. (Not shown) can be mounted, and is provided with a driving assist tool main body 10 that assists the ability of the steel pipe pile driving device K by the vertical load of the weight added to the steel pipe pile W. This driving assist tool main body 10 has a sliding contact surface 11 as a sliding contact portion that is in sliding contact with one side in the diameter direction (left side in FIG. 2) of the outer peripheral surface of the steel pipe pile W. A mounting portion 12 that protrudes toward the side and is capable of mounting a weight, and the diameter direction and the like along the outer peripheral surface of the steel pipe pile W from one end (the upper end in FIG. 2) of the sliding contact surface 11 of the mounting portion 12 And a fixing means 13 that extends to the side (right side in FIG. 2) and fixes the slidable contact surface 11 in pressure contact with one of the outer peripheral surfaces of the steel pipe pile W in the diameter direction. And the driving | operation assisting tool main body 10 is mounted | worn so that the mounting part 12 may be protruded in the radial direction outer side in the axial direction lower part side of the steel pipe pile W. As shown in FIG. The vertical load of the weight is not limited to the weight but may be the weight of the worker X. In this case, the worker puts his / her feet on the placement unit 12 and performs the driving work.

  The fixing means 13 extends from the one end in the circumferential direction of the sliding contact surface 11 (the upper end in FIG. 2) toward the other side in the diameter direction along the outer peripheral surface of the steel pipe pile W, and the tip portion extends to the other side in the diameter direction of the steel pipe pile W. The arm portion 14 positioned, the screw hole 15 penetrating in the radial direction of the steel pipe pile W at the distal end portion of the arm portion 14, the screw hole 15 screwed into the screw hole 15, and the distal end of the outer peripheral surface of the steel pipe pile W in the diametrical direction, etc. And a bolt member 16 that abuts on the side and presses the sliding contact surface 11 to one side in the diameter direction of the outer peripheral surface of the steel pipe pile W. The arm portion 14 extends from one end in the circumferential direction of the sliding contact surface 11 to the other side in the diameter direction of the steel pipe pile W, and then turns around so as to surround the other side in the radial direction of the steel pipe pile W from the outside in the radial direction. It is formed in a substantially L shape.

  The slidable contact surface 11 is formed in an arc shape conforming to the outer diameter of the steel pipe pile W, and is cut out in a substantially square shape in plan view so as to be in line contact with the outer peripheral surface of the steel pipe pile W at two locations in the circumferential direction. It is. The two line contact portions in the circumferential direction of the sliding contact surface 11 with respect to the outer peripheral surface of the steel pipe pile W are subjected to the stellite metalworking S and the bolt member 16 that contacts the outer peripheral surface of the steel pipe pile W. The tip is also subjected to stellite metal forming S, and wear resistance of the contact portion and the contact portion with the outer peripheral surface of the steel pipe pile W is achieved.

  Therefore, in this embodiment, when the steel pipe pile W is driven into the soil by striking the hammer K1 of the steel pipe pile driving apparatus K, the vertical load of the weight is applied to the steel pipe pile W to increase the capacity of the steel pipe pile driving apparatus. Since the assisting driving tool body 10 to be assisted is mounted, a reaction force is obtained by the vertical load of the weight from the driving tool body 10 when the steel pipe pile W is driven into the soil. As a result, the vertical load of the weight from the driving tool main body 10 is added to the hammering force of the hammer K1 of the steel pipe pile driving device K, and the steel pipe pile W is smoothly driven into the ground. A supporting force exceeding the capability of the device K can be obtained.

  Further, since the driving assisting tool main body 10 is mounted on the lower side in the axial direction of the steel pipe pile W so as to project the mounting portion 12 outward in the radial direction, the vertical load of the weight from the driving assisting tool main body 10 Acts in a balanced manner from the radially outer side of the steel pipe pile W, and the steel pipe pile W can be driven smoothly.

  Furthermore, the arm part 14 extends along the outer peripheral surface of the steel pipe pile W from the one end in the circumferential direction of the sliding contact surface 11 of the mounting portion 12 on which the weight is placed on the one side in the diameter direction of the steel pipe pile W. The tip of the bolt member 16 screwed into the screw hole 15 at the tip is brought into contact with the other side in the diameter direction of the outer peripheral surface of the steel pipe pile W, and the sliding contact surface 11 of the mounting portion 12 is brought into contact with the outer peripheral surface of the steel pipe pile W. The mounting portion 12 is fixed to the steel pipe pile W in a state in which the sliding contact surface 11 is pressed against the one side in the diameter direction of the outer peripheral surface of the steel pipe pile W. Thereby, by loosening or tightening the bolt member 16, the driving assisting tool 1 can be easily fixed at an arbitrary position in the axial direction of the steel pipe pile W, and the driving assisting tool 1 is installed in the steel pipe by a simple work procedure. It can be attached to the pile W.

Next, a second embodiment of the present invention will be described with reference to FIGS.
In this embodiment, the configuration of the driving aid is changed. The other configurations except for the driving aid are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 4 is a side view of a state in which the weight is temporarily mounted on the steel pipe pile W without placing a weight on the driving aid according to the second embodiment of the present invention, and FIG. FIG. 6 shows a plan view of the driving aid, and FIG.

  4 to 6, the driving assisting tool 2 can be attached with a weight R as a load body that applies a vertical load to the uppermost steel pipe pile W, and the weight R added to the steel pipe pile W can be mounted. A driving assist tool main body 20 that assists the ability of the steel pipe pile driving device K by a vertical load is provided. The driving assist tool main body 20 has a sliding contact portion 21 that is in sliding contact with the other side in the diameter direction (right side in the drawing) of the outer peripheral surface of the steel pipe pile W, and protrudes radially outward from the sliding contact portion 21. A substantially rectangular mounting portion 22 that allows R to be mounted, and extends from the sliding contact portion 21 of the mounting portion 22 to one side in the diameter direction (left side in the drawing) along the outer peripheral surface of the steel pipe pile W, Fixing means 23 is provided for fixing in a state where the substantially central portion of the sliding contact portion 21 is pressed against the other side in the diameter direction of the outer peripheral surface of the steel pipe pile W.

  The fixing means 23 extends from one end in the circumferential direction of the sliding contact portion 21 (the lower end in FIG. 6) toward the one side in the diameter direction along the outer peripheral surface of the steel pipe pile W, and the tip end is on one side in the diameter direction of the steel pipe pile W. The arm part 25 located is provided. The arm portion 25 extends from one end in the circumferential direction of the sliding contact portion 21 to one side in the diameter direction of the steel pipe pile W, and then wraps around to surround one side in the diameter direction of the steel pipe pile W from the outside in the radial direction. It is formed in a substantially L shape when viewed. And the arm part 25 is bent by the substantially square shape by the side view (FIG. 4 and FIG. 5 front view of a paper surface) of the steel pipe pile W with respect to the mounting part 22. FIG. Further, the arm portion 25 has a substantially rectangular one-side extending piece 251 that extends linearly from one end in the circumferential direction of the sliding contact portion 21 along the outer peripheral surface of the steel pipe pile W toward one side in the diameter direction. The one-side extending piece 251 is bent by about 90 ° from the tip of the one-side extending piece 251 and is formed of a one-side opposed piece 252 having a substantially rectangular cross section extending linearly so as to face one side in the diameter direction of the steel pipe pile W. Furthermore, the contact part 24 which contact | connects the diameter direction one side of the outer peripheral surface of the steel pipe pile W is provided in the longitudinal direction approximate center part of the one side opposing piece 252. As shown in FIG. And the sliding part 21 of the mounting part 22 and the contact part 24 of the arm part 25 are the outer peripheral surface of the steel pipe pile W, when both 21 and 24 have a horizontal positional relationship mutually (position shown in FIG. 4). On the other hand, there are slidable gaps T and T, respectively. On the other hand, the slidable contact portion 21 of the placement portion 22 and the contact portion 24 of the arm portion 25 are arranged so that the placement portion 22 becomes substantially horizontal when the weight R is placed on the placement portion 22. Since the contact portion 24 has a positional relationship that causes a height difference (the positional relationship shown in FIG. 5), the both 21 and 24 are both pressed against the one side and the other side in the diameter direction of the outer peripheral surface of the steel pipe pile W. ing. In this case, the sliding contact portion 21 and the contact portion 24 face each other when the both 21 and 24 are in a horizontal positional relationship with each other, and the placement portion 22 becomes substantially horizontal and both 21 , 24 are in pressure contact with the outer peripheral surface of the steel pipe pile W when the positional relationship is such that a height difference is generated. Needless to say, stellite plating may be applied to the contact portions of the sliding contact portion 21 and the contact portion 24 with respect to the outer peripheral surface of the steel pipe pile W.

  Therefore, in the present embodiment, when the steel pipe pile W is driven into the soil by hitting the hammer K1 of the steel pipe pile driving device K, the vertical load of the weight R is applied to the steel pipe pile W and the steel pipe pile driving device K is used. Since the driving assist tool main body 20 that assists the ability is mounted, a reaction force is obtained by the vertical load of the weight R from the driving assist tool main body 20 when the steel pipe pile W is driven into the soil. As a result, the vertical load of the weight R from the driving tool body 30 is applied to the hammering force of the hammer K1 of the steel pipe pile driving device K, and the steel pipe pile W is driven smoothly into the ground. Support force exceeding the capability of the hammering device K can be obtained.

  Furthermore, the arm part which has the contact part 24 extended along the outer peripheral surface of the steel pipe pile W from the circumferential direction one end of the sliding part 21 of the mounting part 22 in the diameter direction other side of the steel pipe pile W, and contacting the diameter direction other side. 25 is bent in a substantially U-shape with respect to the mounting portion 22, and the sliding contact portion 21 of the mounting portion 22 and the contact portion 24 of the arm portion 25 are both in a horizontal positional relationship. While sometimes having gaps T, T that are slidable with respect to the outer peripheral surface of the steel pipe pile W, when the weight R is placed on the placement portion 22, the placement portion 22 is made substantially horizontal and the sliding contact portion 21. By causing a difference in height between the contact portion 24 and the contact portion 24, both the portions 21 and 24 are brought into pressure contact with the outer peripheral surface of the steel pipe pile W to fix the mounting portion 22 to the steel pipe pile W. As a result, the weight R is lowered from the mounting portion 22 so that the sliding contact portion 21 of the mounting portion 22 and the contact portion 24 of the arm portion 25 are in a horizontal positional relationship with each other. If it moves to the arbitrary positions of an axial direction, and the weight R is mounted on the mounting part 22 in the arbitrary positions, the driving assistance tool 2 can be fixed easily, and the driving assistance tool 2 can be attached to the steel pipe pile W by a simple work procedure. Can be installed.

  In the present embodiment, a substantially L-shaped arm having a contact portion 24 that extends along the outer peripheral surface of the steel pipe pile W from one end in the circumferential direction of the sliding contact portion 21 of the mounting portion 22 and contacts one side in the diameter direction. Although the part 25 was formed, as shown in FIG. 7, it extends linearly along the outer peripheral surface of the steel pipe pile W from the circumferential direction both ends (upper and lower ends in FIG. 7) of the sliding contact part 21 of the mounting part 22 and has a diameter. An approximately U-shaped arm portion 26 may be formed in a plan view having a contact portion 24 in contact with one side in the direction at the center. In this case, the driving aid 2 is mounted from above the steel pipe pile W through the arm portion 26, and the substantially U-shaped arm portion 26 can fix the outer periphery of the steel pipe pile W more firmly. Become.

Next, a third embodiment of the present invention will be described with reference to FIGS.
In this embodiment, the configuration of the driving aid is changed. The other configurations except for the driving aid are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 8 is a side view showing a state where the weight R is temporarily mounted on the steel pipe pile W without placing the weight R on the driving aid according to the third embodiment of the present invention, and FIG. FIG. 10 is a side view showing a state of being mounted on W, and FIG. 10 is a plan view of the driving aid.

  8 to 10, the driving assisting tool 3 is configured such that a weight R for applying a vertical load to the upper steel pipe pile W can be mounted, and the steel pipe is formed by the vertical load of the weight R added to the steel pipe pile W. A driving aid main body 30 that assists the ability of the pile driving device K is provided. This driving assist tool main body 30 has a first sliding contact portion 31 that is in sliding contact with the other side in the diameter direction (right side in the drawing) of the outer peripheral surface of the steel pipe pile W, and is radially outward from the first sliding contact portion 31. A first mounting portion 32 having a substantially rectangular shape that allows the weight R to be protruded from the first mounting portion 32, and the diameter direction of the first mounting portion 32 along the outer peripheral surface of the steel pipe pile W from the first sliding contact portion 31. First fixing means 33 extending in one direction (leftward in the figure) and fixing in a state in which a substantially central portion of the first sliding contact portion 31 is pressed against one side in the diameter direction of the outer peripheral surface of the steel pipe pile W is provided. ing.

  The first fixing means 33 extends from one end in the circumferential direction of the first sliding contact portion 31 (the lower end in FIG. 10) along the outer peripheral surface of the steel pipe pile W toward the one side in the diameter direction, and the tip is the diameter of the steel pipe pile W. A first arm portion 35 is provided on one side in the direction. The first arm portion 35 extends from one end in the circumferential direction of the first sliding contact portion 31 to one side in the diameter direction of the steel pipe pile W, and then surrounds one side in the diameter direction of the steel pipe pile W from the outside in the radial direction. It wraps around and is formed in a substantially L shape in plan view. And the 1st arm part 35 is bent by the substantially square shape by the side view (FIG. 8 and FIG. 9 front view of a paper surface) of the steel pipe pile W with respect to the 1st mounting part 32. FIG. Further, the first arm portion 35 is a one-side extending piece having a substantially rectangular cross section extending linearly from one end in the circumferential direction of the first sliding contact portion 31 along the outer peripheral surface of the steel pipe pile W toward one side in the diameter direction. 351 and a one-side-facing piece 352 having a substantially rectangular cross section that is bent approximately 90 ° from the tip of the one-side extending piece 351 and extends linearly and faces one side in the diameter direction of the steel pipe pile W. . A first contact portion 34 that is in contact with one side in the diameter direction of the outer peripheral surface of the steel pipe pile W is provided at a substantially central portion in the longitudinal direction of the one side facing piece 352.

  Further, the driving assist tool main body 30 has a second sliding contact portion 36 slidably contacting one side in the diameter direction of the outer peripheral surface of the steel pipe pile W, and protrudes radially outward from the second sliding contact portion 36 and has a weight. A substantially rectangular second mounting portion 37 that can mount R, and a second sliding contact portion 36 of the second mounting portion 37 extend along the outer peripheral surface of the steel pipe pile W to the other side in the diameter direction. The second slidable contact portion 36 is provided with a second fixing means 38 that fixes the substantially center portion of the second slidable contact portion 36 in a state of being pressed against one of the outer peripheral surfaces of the steel pipe pile W in the diameter direction.

  The second fixing means 38 extends from one end in the circumferential direction of the second sliding contact portion 36 (the lower end in FIG. 10) toward the other side in the diameter direction along the outer peripheral surface of the steel pipe pile W, and the tip portion is the diameter of the steel pipe pile W. A second arm portion 40 is provided on the other side in the direction. The second arm portion 40 extends from the one end in the circumferential direction of the second sliding contact portion 36 to the other side in the diameter direction of the steel pipe pile W, and then surrounds the other side in the diameter direction of the steel pipe pile W from the outside in the radial direction. It wraps around and is formed in a substantially L shape in plan view. And the 2nd arm part 40 is bent by the substantially U shape with the 2nd mounting part 37 by the side view of paper pipe pile W (front view on paper surface in FIG.8 and FIG.9). Further, the second arm portion 40 is the other side extending piece having a substantially rectangular cross section extending linearly from the one end in the circumferential direction of the second sliding contact portion 36 along the outer peripheral surface of the steel pipe pile W toward the other side in the diameter direction. 401 and the other-side opposing piece 402 having a substantially rectangular cross section facing the other side in the diameter direction of the steel pipe pile W by bending approximately 90 ° from the tip of the other-side extending piece 401 and extending linearly. . A second contact portion 39 that is in contact with the other side in the diameter direction of the outer peripheral surface of the steel pipe pile W is provided at a substantially central portion in the longitudinal direction of the other side facing piece 402. Further, the one-side extending piece 351 and the other-side extending piece 401 of the first and second arm portions 35, 40 are supported in a swingable manner by a shaft 44 extending in a substantially horizontal direction at a substantially central position in the longitudinal direction. Has been.

  The first and second sliding contact portions 31 and 36 of the first and second mounting portions 32 and 37 and the first and second contact portions 34 and 39 of the first and second arm portions 35 and 40 are When the both 31, 34, 36, and 40 are in a horizontal positional relationship (the positional relationship shown in FIG. 8), they have gaps T and T that are slidable with respect to the outer peripheral surface of the steel pipe pile W. On the other hand, the first and second sliding contact portions 31 and 36 of the first and second mounting portions 32 and 37 and the first and second contact portions 34 and 39 of the first and second arm portions 35 and 40 are When the weight R is placed on the first and second placement portions 32 and 37, the placement portions 32 and 37 become substantially horizontal and the first and second sliding contact portions 31 and 36 and the first and second contact portions Since the portions 34 and 39 are in a positional relationship (positional relationship shown in FIG. 9) that causes a height difference, both the 31, 34, 36, and 39 are both on the diametrical side of the outer peripheral surface of the steel pipe pile W and others. It is pressed against the side. In this case, the first and second sliding contact portions 31, 36 and the first and second contacting portions 34, 39 are in a horizontal positional relationship with the respective sliding contact portions 31, 36 and the respective contact portions 34, 39. Sometimes the surfaces of each other face each other, and the first and second mounting portions 32 and 37 are substantially horizontal, and the sliding contact portions 31 and 36 and the respective contact portions 34 and 39 cause a height difference. When the positional relationship is reached, the corners are pressed against the outer peripheral surface of the steel pipe pile W, respectively. In addition, the stellite metal forming process may be given to the contact part with respect to the outer peripheral surface of the steel pipe pile W of the 1st and 2nd sliding contact parts 31 and 36 and the 1st and 2nd contact parts 34 and 39. Not too long.

  Therefore, in the present embodiment, when the steel pipe pile W is driven into the soil by hitting the hammer K1 of the steel pipe pile driving device K, the vertical load of the weight R is applied to the steel pipe pile W and the capability of the steel pipe pile driving device. Therefore, when the steel pipe pile W is driven into the soil, a reaction force is obtained by the vertical load of the weight R from the driving assist tool main body 30. As a result, the vertical load of the weight R from the driving tool body 30 is applied to the hammering force of the hammer K1 of the steel pipe pile driving device K, and the steel pipe pile W is driven smoothly into the ground. Support force exceeding the capability of the hammering device K can be obtained.

  Furthermore, the 1st contact | attachment extended along the outer peripheral surface of the steel pipe pile W from the circumferential direction end of the 1st sliding contact part 31 of the 1st mounting part 32 in the diameter direction other side of the steel pipe pile W, and contact | connects one diameter direction side. The first arm portion 35 having the portion 34 is bent in a substantially U shape with respect to the first placement portion 32, while the second placement portion 37 on the one side in the diameter direction of the steel pipe pile W is in the second sliding contact. The second arm portion 40 having a second contact portion 39 extending from the circumferential end of the portion 36 along the outer peripheral surface of the steel pipe pile W and in contact with the other side in the diametrical direction with respect to the second mounting portion 37. Steel pipe pile when the first and second sliding contact portions 31, 36 and the first and second contact portions 34, 39 are both in a horizontal positional relationship. While having gaps T and T that are slidable with respect to the outer peripheral surface of W, when the weight R is placed on the first and second placement parts 32 and 37, the placement parts 32 and 37 are By creating a level difference between the first and second slidable contact portions 31 and 36 and the first and second contacted portions 34 and 39 in the horizontal direction, both the 31, 34, 36, and 39 are both steel pipe piles. The first and second mounting portions 32 and 37 are fixed to the steel pipe pile W by pressing the corners against the outer peripheral surface of W. As a result, the weight R is lowered from the first and second mounting portions 32 and 37 so that the first and second sliding contact portions 31 and 36 and the first and second contact portions 34 and 39 are in a horizontal positional relationship. Thus, the driving assisting tool 3 is moved to an arbitrary position in the axial direction of the steel pipe pile W, and the driving assisting tool 3 is mounted by placing the weight R on the first and second mounting portions 32 and 37 at the arbitrary position. It can be easily fixed, and the driving aid 3 can be attached to the steel pipe pile W by a simple work procedure.

  In the present embodiment, the first and second mounting portions 32 and 37 extend along the outer circumferential surface of the steel pipe pile W from the circumferential ends of the first and second sliding contact portions 31 and 36 and have a uniform diameter direction. Although substantially L-shaped first and second arm portions 35 and 40 having first and second contact portions 34 and 39 in contact with the side and the other side are formed, as shown in FIG. The first and second sliding contact portions 31 and 36 of the mounting portions 32 and 37 extend along the outer peripheral surface of the steel pipe pile W from both circumferential ends (upper and lower ends in FIG. 11) and contact one side and the other side in the diametrical direction. The substantially U-shaped first and second arm portions 41 and 42 having the first and second contact portions 34 and 39 may be formed. The first and second arm portions 41 and 42 are extended from a pair of one side and the other side that extend from the circumferential ends of the first and second sliding contact portions 31 and 36 to one side and the other side in the diameter direction. The pieces 411, 412, 421, 422, and the one side and the other side extending pieces 411, 412, 421, 422 are bent from the tips of the outer circumferences of the steel pipe piles W and face each other in the diametrical direction, Shafts for swingably supporting the one-side and other-side opposing pieces 413, 423 having the second contact portions 34, 39 in the longitudinal center and the one-side and other-side extending pieces 411, 412, 421, 422, respectively. 44. In this case, the driving aid 3 is mounted from above the steel pipe pile W through the first and second arm portions 41 and 42, and the outer periphery of the steel pipe pile W is formed by the substantially U-shaped first and second arm portions 41 and 42. It becomes possible to make the fixing to the surface more rigid.

Next, a fourth embodiment of the present invention will be described with reference to FIGS.
In this embodiment, the configuration of the driving aid is changed. The other configurations except for the driving aid are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 12 is a side view showing a state in which the driving aid according to the fourth embodiment of the present invention is mounted on the steel pipe pile W, and FIG. 13 is a plan view of the driving aid.

  The driving assisting tool 5 can be equipped with a weight R for applying a vertical load to the top steel pipe pile W, and the ability of the steel pipe pile driving device K can be increased by the vertical load of the weight R added to the steel pipe pile W. An assisting driving tool main body 50 is provided. This driving assist tool main body 50 has a sliding contact surface 51 as a sliding contact portion that is in sliding contact with the other side in the diameter direction (right side in FIG. 2) of the outer peripheral surface of the steel pipe pile W. A mounting portion 52 that protrudes toward the side and allows the weight R as a load body to be mounted, and one side in the diameter direction along the outer peripheral surface of the steel pipe pile W from the sliding contact surface 51 of the mounting portion 52 (see FIG. 2, and includes a fixing means 53 that fixes the sliding contact surface 51 in a state in which the sliding contact surface 51 is pressed against one of the outer peripheral surfaces of the steel pipe pile W in the diameter direction. And the driving | operation assisting tool main body 50 is mounted | worn so that the mounting part 52 may protrude in the radial direction outer side in the axial direction lower part side of the steel pipe pile W. As shown in FIG.

  The fixing means 53 extends from the other end in the circumferential direction of the sliding contact surface 51 (the lower end in FIG. 13) along the outer peripheral surface of the steel pipe pile W toward the one side in the diametrical direction, and the tip portion is one side in the diametrical direction of the steel pipe pile W. The arm part 54 located in is provided. The arm portion 54 extends from the other end in the circumferential direction of the sliding contact portion 51 to one side in the diameter direction of the steel pipe pile W, and then wraps around the one side in the diameter direction of the steel pipe pile W from outside in the radial direction. It is formed in a substantially L shape in plan view. And the arm part 54 is extended in the diameter direction one side substantially horizontally with respect to the mounting part 52 by the side view of the steel pipe pile W. As shown in FIG. Further, the arm portion 54 has a one-side extending piece 541 having a substantially rectangular cross section extending linearly from the other end in the circumferential direction of the sliding contact portion 51 along the outer peripheral surface of the steel pipe pile W toward one side in the diameter direction thereof, The one-side extending piece 541 is provided with a one-side opposed piece 542 having a substantially rectangular cross section that is bent approximately 90 ° from the tip of the piece 541 and extends in a straight line and faces one side in the diameter direction of the steel pipe pile W. A facing surface 55 that faces one side in the diameter direction of the outer peripheral surface of the steel pipe pile W is provided at a substantially central portion in the longitudinal direction of the one side facing piece 542.

  The fixing means 53 is screwed into the screw hole 56 that penetrates in the radial direction of the steel pipe pile W at a substantially central portion in the longitudinal direction of the one-side opposed piece 542 of the arm part 54, and the tip thereof is steel pipe pile. And a bolt member 57 that abuts on one side in the diameter direction of the outer peripheral surface of W and presses the sliding contact surface 51 against the other side in the diameter direction of the outer peripheral surface of the steel pipe pile W. Needless to say, the stellite plating process may be applied to the contact portion of the sliding contact surface 51 and the bolt member 57 with respect to the outer peripheral surface of the steel pipe pile W.

  Therefore, in the present embodiment, when the steel pipe pile W is driven into the soil by hitting the hammer K1 of the steel pipe pile driving device K, the vertical load of the weight R is applied to the steel pipe pile W and the capability of the steel pipe pile driving device. Therefore, when the steel pipe pile W is driven into the soil, a reaction force is obtained by the vertical load of the weight R from the driving assist tool main body 50. As a result, the vertical load of the weight R from the driving tool body 50 is applied to the hammering force of the hammer K1 of the steel pipe pile driving device K, and the steel pipe pile W is driven smoothly into the ground. Support force exceeding the capability of the hammering device K can be obtained.

  Furthermore, the arm part extended on the one side of the diameter direction along the outer peripheral surface of the steel pipe pile W from the circumferential direction other end of the sliding contact surface 51 of the mounting part 52 which mounts the weight R in the diameter direction other side of the steel pipe pile W 54, the tip of the bolt member 57 screwed into the screw hole 56 of the one-side opposed piece 542 is brought into contact with one side in the diameter direction of the outer peripheral surface of the steel pipe pile W, so that the sliding contact surface 51 of the mounting portion 52 is made into the steel pipe pile. The mounting portion 52 is fixed to the steel pipe pile W in such a state that the outer peripheral surface of W is pressed against the other side in the diameter direction. Thereby, by loosening or tightening the bolt member 57, the driving assisting tool 5 can be easily fixed at an arbitrary position in the axial direction of the steel pipe pile W, and the driving assisting tool 5 is installed in the steel pipe by a simple work procedure. It can be attached to the pile W.

  In the present embodiment, a substantially L-shape having a facing surface 55 that extends along the outer circumferential surface of the steel pipe pile W from the other circumferential end of the sliding contact surface 51 of the mounting portion 52 and faces one side in the diameter direction. As shown in FIG. 14, as shown in FIG. 14, the diameters of the steel pipe piles W are respectively extended from the circumferentially opposite ends (upper and lower ends in FIG. 14) of the sliding contact surface 51 of the placement portion 52. A substantially U-shaped arm portion 58 may be formed in a plan view extending in one direction and having a one-side opposed piece 582 connected between the ends. In this case, the driving aid 5 is mounted from above the steel pipe pile W through the arm portion 58, and the substantially U-shaped arm portion 58 can fix the outer periphery of the steel pipe pile W more firmly. Become.

Next, a fifth embodiment of the present invention will be described with reference to FIGS.
In this embodiment, the configuration of the driving aid is changed. The other configurations except for the driving aid are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 15 is a side view showing a state in which the driving aid according to the fifth embodiment of the present invention is mounted on a steel pipe pile, and FIG. 16 shows a bottom view of the driving aid seen from below.

  The driving assisting tool 6 can be equipped with weights R1 and R2 for applying a vertical load to the uppermost steel pipe pile W, and a steel pipe pile driving device by the vertical load of the weights R1 and R2 added to the steel pipe pile W. A driving assisting tool main body 60 that assists the ability of K is provided. The driving aid main body 60 is formed in a substantially cylindrical shape and includes two divided pieces 61 and 62 divided in the circumferential direction. The divided pieces 61 and 62 are provided with fastening seats 613 and 623 at one end portions 612 and 622 adjacent to each other. The fastening seats 613 and 623 are fastened by a fastener 63. On the other hand, the other end portions 614 and 624 of the divided pieces 61 and 62 adjacent to each other are supported so as to be rotatable around a hinge shaft 64 extending in the vertical direction.

  Fasteners 63 are provided at two locations in the vertical direction of the fastening seats 613 and 623. The fastener 63 includes a bolt member 631 that is inserted into a bolt insertion hole (not shown) that opens to each of the fastening seats 613 and 623, and a bolt member 631 that is inserted through the bolt insertion holes of both the fastening seats 613 and 623. And a nut member (not shown) screwed to the tip. And the inner peripheral surface of the division | segmentation pieces 61 and 62 is formed in the outer periphery slightly shorter than the outer periphery of the steel pipe pile W, a nut member is fastened with respect to the bolt member 631, and the outer peripheral surface of the steel pipe pile W is formed. On the other hand, there is a slight amount of gap (for example, about 4 mm) between the fastening seats 613 and 623 when fixed.

  Further, the driving assisting tool main body 60 includes a substantially semi-disc-shaped mounting portion 65 that is integrally provided at the upper end of each of the divided pieces 61 and 62. The mounting portion 65 has a substantially annular shape when the fastening seats 613 and 623 are fastened by the bolt member 631 and the nut member, and the weights R1 and R2 are placed thereon. The weights R1 and R2 are formed in an annular shape, and a crane hook (not shown) is suspended and hung on a wheel provided at a position where the outer peripheral surfaces are shifted from each other by 180 °. Placed.

  Furthermore, each divided piece 61, 62 is provided with a hole 611 (only one is shown in FIG. 15). At the corresponding position of the steel pipe pile W corresponding to each hole 611, a hole W0 smaller than each hole 611 is provided. A pin (not shown) is inserted into the hole W0 through the hole 611 of each divided piece 61, 62, and the bolt member 631 is secured when the fastening seats 613, 623 are fixed to the steel pipe pile W. Further, in combination with the tightening by the nut member, the fixing strength to the steel pipe pile W is increased. Further, the holes W0 of the steel pipe pile W are provided at equal intervals in the axial direction of the steel pipe pile W, and the driving aid main body 60 can be fixed at an arbitrary position according to the driving amount of the steel pipe pile W.

  Therefore, in the present embodiment, when the steel pipe pile W is driven into the soil by hitting the hammer K1 of the steel pipe pile driving apparatus K, the vertical load of the weights R1, R2 is applied to the steel pipe pile W so that the steel pipe pile driving apparatus. Since the driving assist tool main body 60 that assists the ability of K is mounted, a reaction force is obtained by the vertical loads of the weights R1 and R2 from the driving assist tool main body 60 when the steel pipe pile W is driven into the soil. As a result, the vertical load of the weight R from the driving tool main body 60 is added to the hammering force of the hammer K1 of the steel pipe pile driving device K, and the steel pipe pile W is driven smoothly into the ground. Support force exceeding the capability of the hammering device K can be obtained.

  Further, a pin is inserted into the hole W0 through the hole 611 of each divided piece 61, 62 at an arbitrary position on the outer peripheral surface of the steel pipe pile W, and the clamping seats 613, 623 are tightened with the bolt member 631 and the nut member. The driving assist tool main body 60 is fixed to the steel pipe pile W. Thereby, the bolting member 631 and the nut member are loosened or tightened in a state where the pin is inserted into the hole portion W0 of the steel pipe pile W via the hole portion 611 of each of the divided pieces 61 and 62, whereby the driving aid 6 is The steel pipe pile W can be easily fixed at an arbitrary position in the axial direction, and the driving aid 6 can be attached to the steel pipe pile W by a simple work procedure.

  In the present embodiment, the other end portions 614 and 624 of the divided pieces 61 and 62 adjacent to each other are supported so as to be rotatable around the hinge shaft 64 extending in the vertical direction. However, as shown in FIG. The semi-disc-shaped mounting portions 65 and 65 are integrally provided at the upper ends of the adjacent divided pieces 61 and 62, respectively, and provided at one end and the other end of the mounting portions 65 and 65, respectively. The fastening seats 651 and 651 may be fastened by the bolt member 631 and the nut member 632.

Next, a sixth embodiment of the present invention will be described with reference to FIG.
In this embodiment, the configuration of the driving aid is changed. The other configurations except for the driving aid are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 18: has shown the side view of the state which mounted | wore the steel pipe pile with the driving assistance tool which concerns on the 6th Embodiment of this invention.

  The driving assisting tool 7 can be equipped with a weight R3 for applying a vertical load to the uppermost steel pipe pile W, and the ability of the steel pipe pile driving apparatus K can be increased by the vertical load of the weight R3 added to the steel pipe pile W. An assisting driving tool main body 70 is provided. The driving assist tool main body 70 includes a pair of chains 72 and 72 each having an upper end attached to a bottomed cylindrical cap 71 that covers the upper end of the steel pipe pile W. A weight R3 is suspended from the lower ends of the pair of chains 72, 72. Further, a recess (not shown) through which the hammer K1 of the steel pipe pile driving device K is inserted is provided on the upper surface of the cap 71.

  Therefore, in the present embodiment, when the steel pipe pile W is driven into the soil by striking the hammer K1 of the steel pipe pile driving apparatus K, the weight R3 is suspended from the cap 71 via the chain 72 (driving aid main body 70). Thus, the vertical load of the weight R3 is added to the steel pipe pile W to assist the ability of the steel pipe pile driving device K. Therefore, when the steel pipe pile W is driven into the soil, the weight R3 from the driving tool main body 70 is reduced. Reaction force is obtained by vertical load. As a result, the vertical load of the weight R3 from the driving tool main body 70 is applied to the hammering force of the hammer K1 of the steel pipe pile driving device K, and the steel pipe pile W is smoothly driven into the ground. Support force exceeding the capability of the hammering device K can be obtained.

  Furthermore, the driving tool main body 70 is fixed to the steel pipe pile W simply by suspending the weight R3 from the lower ends of the pair of chains 72, 72 having the upper ends attached to the cap 71. Thereby, the driving aid 7 can be easily fixed to the steel pipe pile W by suspending the weight R3 from the cap 71 via the pair of chains 72, 72. Can be attached to the steel pipe pile W.

Next, a seventh embodiment of the present invention will be described with reference to FIG.
In this embodiment, the configuration of the driving aid is changed. The other configurations except for the driving aid are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  FIG. 19: has shown the side view partly notched in the state which mounted | wore the steel pipe pile with the driving assistance tool which concerns on the 7th Embodiment of this invention.

  The driving assisting tool 8 can be equipped with a weight R4 for applying a vertical load to the top steel pipe pile W, and the ability of the steel pipe pile driving device K can be increased by the vertical load of the weight R added to the steel pipe pile W. An assisting driving tool main body 80 is provided. This driving assisting tool main body 80 includes a chain 82 having an upper end attached to the center of a bottomed cylindrical cap 81 that covers the upper end of the steel pipe pile W. A weight R4 is suspended from the lower end of the chain 82. The chain 82 has an upper end attached to the bottom surface of the cap 81 and suspends a weight R4 inside the steel pipe pile W.

  Therefore, in the present embodiment, when the steel pipe pile W is driven into the soil by hitting the hammer K1 of the steel pipe pile driving device K, the chain 82 (driving aid main body 80) is placed on the cap 81 that covers the upper end of the steel pipe pile W. By suspending the weight R4 via the steel pipe pile W, the vertical load of the weight R4 is added to the steel pipe pile W to assist the ability of the steel pipe pile driving device K. Therefore, the steel pipe pile W is driven when driven into the soil. A reaction force is obtained by the vertical load of the weight R4 from the auxiliary tool body 80. As a result, the vertical load of the weight R4 from the driving tool main body 80 is applied to the hammering force of the hammer K1 of the steel pipe pile driving device K, and the steel pipe pile W is smoothly driven into the ground. Support force exceeding the capability of the hammering device K can be obtained.

  Furthermore, the driving tool main body 80 is fixed to the steel pipe pile W only by covering the upper end of the steel pipe pile W with the cap 81 in which the weight R4 is suspended from the chain 82. Thereby, the driving aid 8 can be easily fixed to the steel pipe pile W, and the driving aid 8 can be attached to the steel pipe pile W by a simple work procedure.

  The present invention is not limited to the above-described embodiments, and includes various other modifications. For example, in the present embodiment, a case has been described in which a plurality of steel pipe piles W are successively driven into the soil by hammering the hammer K1 of the steel pipe pile driving apparatus K, but the present invention is not limited to this, and the driving site is not limited to this. If it is a wide space and a large steel pipe pile driving device of an on-vehicle type can enter, it can also be applied as a driving aid attached to a single steel pipe pile. In that case, the weight of the weight naturally becomes large, the size of the driving aid increases, and a highly rigid material capable of withstanding the weight is prepared.

  Moreover, in each said embodiment, although the magnitude | size of the vertical load of weight R and R1-R4 was not clarified, the ability of the vertical load of a weight to act on a steel pipe pile by the hammering of a steel pipe pile driving device is demonstrated. It is limited to a weight that is canceled out, for example, a weight that is not more than 10 times the capacity (load) of the steel pipe pile driving device.

  Furthermore, in each said embodiment, although the hammer K1 was hit | damaged to the upper end part of the steel pipe pile W, the steel pipe pile driving device which applies a vibration from a hammer with respect to the upper end part of a steel pipe pile may be applied.

DESCRIPTION OF SYMBOLS 1 Driving assistance tool 10 Driving assistance tool main body 11 Sliding contact surface (sliding contact part)
DESCRIPTION OF SYMBOLS 12 Mounting part 13 Fixing means 14 Arm part 15 Screw hole 16 Bolt member 2 Driving assistance tool 20 Driving assistance tool main body 21 Sliding contact part 22 Mounting part 23 Fixing means 24 Contacting part 26 Arm part 3 Driving assistance tool 30 Driving assistance tool Main body 31 First sliding portion 32 First placement portion 33 First fixing means 34 First contact portion 35 First arm portion 36 Second sliding contact portion 37 Second placement portion 38 Second fixing portion 39 Second contact portion 40 Second arm portion 41 First arm portion 42 Second arm portion 5 Driving assist tool 50 Driving assist tool body 51 Sliding contact surface (sliding contact portion)
52 placing portion 53 fixing means 54 arm portion 58 arm portion 6 driving assist tool 60 driving assist tool body 65 mounting portion 7 driving assist tool 70 driving assist tool body 8 driving assist tool 80 driving assist tool body K steel pipe pile driving device K1 Hammer R, R1, R2, R3, R4 Weight T Cavity W Steel pipe pile

Claims (7)

When a steel pipe pile is driven into the soil by vibration or hammering from a hammer of a steel pipe pile driving device, a load body that applies a vertical load to the steel pipe pile can be attached, and from the load body added to the steel pipe pile the vertical load of the provided with a driving aid body of the steel pipe pile to assist the ability of the steel pipe pile driving device,
The driving aid main body is:
Attached so as to protrude outward in the radial direction on the lower side in the axial direction of the steel pipe pile,
A mounting portion that has a sliding contact portion that is slidably contacted on one side in the diameter direction of the outer peripheral surface of the steel pipe pile, and that projects from the sliding contact portion radially outward of the steel pipe pile so that the load body can be mounted. When,
The slidable contact portion of the mounting portion extends along the outer peripheral surface of the steel pipe pile to the other side in the diametrical direction, and is fixed in a state where the slidable contact portion is pressed against the diametrical side of the outer peripheral surface of the steel pipe pile. Fixing means;
Driving aid of the steel pipe pile, characterized in that it comprises a. The fixing means includes
An arm portion extending from the one end or both ends in the circumferential direction of the sliding contact portion to the other side in the diameter direction along the outer peripheral surface of the steel pipe pile, and having a tip portion positioned on the other side in the diameter direction of the outer peripheral surface of the steel pipe pile;
A screw hole penetrating in the radial direction of the steel pipe pile at the tip of the arm,
A bolt member screwed into the screw hole, the tip abutting against the other side in the diameter direction of the steel pipe pile, and pressing the sliding contact part to one side in the diameter direction of the steel pipe pile;
Driving aid of the steel pipe pile according to claim 1 which comprises a. The fixing means includes
The arm part which has the contact part which extends to the diameter direction other side along the outer peripheral surface of the steel pipe pile from the circumferential direction one end or both ends of the sliding contact part, and contacts the diameter direction other side of the outer peripheral surface of the steel pipe pile ,
The arm part is bent in a generally U shape with respect to the mounting part in a side view of the steel pipe pile,
The sliding contact portion of the mounting portion and the contact portion of the arm portion have a gap that is slidable with respect to the outer peripheral surface of the steel pipe pile when both are in a horizontal positional relationship with each other. When the load body is placed on the part, the placing part becomes substantially horizontal and causes a difference in height between the sliding contact part of the placing part and the contact part of the arm part. The steel pipe pile driving aid according to claim 1 , which is in pressure contact with the outer peripheral surface of the steel pipe pile. When a steel pipe pile is driven into the soil by vibration or hammering from a hammer of a steel pipe pile driving device, a load body that applies a vertical load to the steel pipe pile can be attached, and from the load body added to the steel pipe pile A steel pipe pile driving aid body that assists the ability of the steel pipe pile driving device by the vertical load of
The driving aid main body is formed in a substantially cylindrical shape and includes two divided pieces divided in the circumferential direction, and a substantially semi-disc-shaped mounting portion at the upper end of each divided piece,
Each of the divided pieces is provided with a fastening seat at one end adjacent to each other, while the other end adjacent to each other is supported so as to be rotatable about a hinge axis extending in the vertical direction,
The mounting portion is configured to be substantially annular when the clamping seats are tightened with bolt members and nut members at one end of each of the divided pieces, and the load body is placed thereon. A steel pipe pile driving aid. When a steel pipe pile is driven into the soil by vibration or hammering from a hammer of a steel pipe pile driving device, a load body that applies a vertical load to the steel pipe pile can be attached, and from the load body added to the steel pipe pile A steel pipe pile driving aid body that assists the ability of the steel pipe pile driving device by the vertical load of
The driving aid main body is formed in a substantially cylindrical shape and includes two divided pieces divided in the circumferential direction, and a substantially semi-disc-shaped mounting portion at the upper end of each divided piece,
Each of the divided pieces is provided with a fastening seat at one end and the other end adjacent to each other,
The mounting portion is formed in a substantially annular shape when the tightening seats are tightened with a bolt member and a nut member at one end and the other end of each divided piece so that the load body is placed thereon. driving aid of the steel pipe pile, characterized in that it it. When a steel pipe pile is driven into the soil by vibration or hammering from a hammer of a steel pipe pile driving device, a load body that applies a vertical load to the steel pipe pile can be attached, and from the load body added to the steel pipe pile A steel pipe pile driving aid body that assists the ability of the steel pipe pile driving device by the vertical load of
The driving assist tool main body includes a bottomed cylindrical cap that covers the upper end of the steel pipe pile, and the load body is suspended from the steel pipe pile outside the steel pipe pile. Driving aids. When a steel pipe pile is driven into the soil by vibration or hammering from a hammer of a steel pipe pile driving device, a load body that applies a vertical load to the steel pipe pile can be attached, and from the load body added to the steel pipe pile A steel pipe pile driving aid body that assists the ability of the steel pipe pile driving device by the vertical load of
The driving assisting tool main body includes a bottomed cylindrical cap that covers the upper end of the steel pipe pile, and the load body is suspended from the inside of the steel pipe pile by the cap. Driving aids.

Images