JP5444192B2 - Pipe pile, pipe pile construction method using the same, and pipe pile structure provided with the same - Google Patents

Description

  The present invention relates to a pipe pile such as a steel pipe pile that is embedded in the ground and serves as a foundation of a building, a pipe pile construction method using the pile, and a pipe pile structure including the pipe pile, and more specifically, a rotation fixed to an outer peripheral portion. A pipe pile that can increase the strength against deformation of the pipe pile when the pipe pile is rotated by applying an external force to the fitting, and a pipe pile construction method using the pipe pile that can exhibit a necessary and sufficient horizontal support force It relates to a pipe pile structure provided.

  Conventionally, steel pipe pile driving machines have been widely used for rotating and penetrating steel pipe piles that form the foundation of buildings into the ground. As this kind of steel pipe pile driving machine 100, as shown in FIG. 31, a construction machine main body 101 which is a vehicle is provided with a pipe pile rotary penetration device 102. The steel pipe pile rotating and penetrating device 102 includes a leader 103 and a pile rotating machine 105 that can move up and down along the leader 103 and incorporates a motor 104. Then, the steel pipe pile 106 is attached to the pile rotating machine 105, and the pile rotating machine 105 is lowered along the leader 103 while rotating the steel pipe pile 106 by the motor 104 of the pile rotating machine 105, so that the steel pipe pile 106 becomes the ground. On the other hand, it rotates and penetrates (for example, see Patent Document 1).

  When the steel pipe pile 106 is attached to the pile rotating machine 105 of the pipe pile rotating and penetrating apparatus 102, the steel pipe pile is placed between the pile rotating machine 105 and the steel pipe pile 106 so that the steel pipe pile 106 having a different diameter can be easily attached. A mounting attachment 107 is interposed. As shown in FIG. 32, the steel pipe pile mounting attachment 107 is provided on the upper side of the cylindrical body 108, a pressing part 109 that closes the upper end surface of the main body 108, and the pressing part 109. A joint portion 110 that can be mounted on the mounting portion of the pile rotating machine 105 and a locking groove 111 formed on a side surface of the main body portion 108 are provided. The locking groove 111 includes an opening 112 formed at the lower end, and a locking portion 113 protruding from the opening 112 in the rotation direction.

  The steel pipe pile 106 attached to the steel pipe pile attachment 107 has a hollow pipe structure with an upper end opened, and a rectangular parallelepiped rotating metal fitting 114 on the outer peripheral surface in the vicinity of the upper end (rotation transmitting portion 117). Are fixed by welding, for example. At the lower end of the steel pipe pile 106, for example, a tip enlarged wing 115 is provided.

  And when attaching the steel pipe pile attachment 107 to the steel pipe pile 106, as shown in FIG. 32 (A), the main body 108 of the steel pipe pile attachment 107 is fitted to the upper end of the steel pipe pile 106, The opening 112 of the locking groove 111 is fitted to the rotating metal fitting 114 of the steel pipe pile 106 (FIG. 32 (B)), and the steel pipe pile attaching attachment 107 is rotated so that the rotating metal piece 114 becomes the engaging portion of the engaging groove 111. 113 is engaged (FIG. 32C).

  When penetrating the steel pipe pile 106 into the ground 116, the pile rotating machine 105 is lowered along the leader 103, and the upper end surface of the steel pipe pile 106 is pressed against the pressing portion 109 of the attachment 107 for attaching the steel pipe pile and pressed downward. To do. At the same time, the motor 104 of the pile rotating machine 105 is driven, and the turning force is transmitted from the side of the locking groove 111 of the steel pipe pile mounting attachment 107 to the rotating metal fitting 114 of the steel pipe pile 106 to rotate the steel pipe pile 106. Further, depending on the rotation direction, the side surface of the locking groove 111 with which the rotating metal fitting 114 abuts is reversed (FIGS. 32B and 32C). And the steel pipe pile 106 penetrates with rotating with respect to the ground 116 by rotation and descending.

JP 2004-232322 A

  However, since the steel pipe pile 106 described above has a hollow pipe structure, the rigidity may be insufficient. For this reason, for example, when a strong twisting force is applied between the rotating metal fitting 114 and the lower part of the steel pipe pile 106 as in the case where the steel pipe pile 106 is rotationally penetrated into the solid ground 116, it is locally around the rotating metal fitting 114. Excessive stress may be generated in the rotation transmission portion 117 and the rotation transmission portion 117 including the fixing portion of the rotating metal fitting 114 may be deformed. For example, as shown in FIG. 33, the end 118 on the upstream side of the external force direction (arrow) of the rotating metal fitting 114 is deformed by stress in the direction of expanding the steel pipe pile 106, and the end 119 on the downstream side is contracted. Stress may be generated in the diameter direction, and the steel pipe pile 106 may be deformed into an uneven shape. Alternatively, the rotation transmission unit 117 may be deformed so that the vertical cross-sectional shape thereof becomes an oval shape. As described above, when the rotation transmission portion 117 of the steel pipe pile 106 is deformed, it is estimated that the part has reached the damage limit, and therefore, it becomes necessary to cut the part and workability is deteriorated. End up. Furthermore, the steel pipe pile is required to exhibit a predetermined horizontal supporting force, but if the thickness of the steel pipe pile is increased to satisfy this, the cost becomes high.

  Further, for example, as shown in FIGS. 34 (A) and 34 (B), when the steel pipe pile 106 is rotated and penetrated to a predetermined depth and the Yatco 200 is pulled out, the ground may collapse slightly. Since the part is open, earth and sand, muddy water, etc. will enter the steel pipe pile 1. In particular, as shown in FIG. 34C, the ground may collapse a little due to infiltration of rainwater, groundwater, etc., and groundwater, muddy water, earth and sand, etc. will enter the steel pipe pile 1 in the raining state.

  The present invention has been made in view of the above situation, and can increase the strength against deformation of the pipe pile when the pipe pile is rotated by applying an external force to the rotary fitting fixed to the outer periphery, and is necessary and sufficient. An object of the present invention is to provide a pipe pile capable of exerting a horizontal supporting force, a pipe pile construction method using the pipe pile, and a pipe pile structure including the pipe pile construction method. Moreover, in addition to the said objective, this invention is a pipe pile which can prevent the penetration | invasion of the earth and sand etc. in a pipe pile after rotation penetration to the ground, a pipe pile construction method using this, and a pipe pile structure provided with this The other purpose is to provide a body.

The present invention is as follows.
1. A pile body, a rotating bracket fixed to the outer peripheral surface of the upper portion of the pile body and externally applied to rotate the pile body, and a reinforcing plate fixed to the inner peripheral surface of the upper portion of the pile body; The reinforcing plate is formed with a through hole for placing concrete, mortar or soil cement in the pile body, and at least one of the reinforcing plate and the pile body, A pipe pile, wherein a closing member is detachably attached so as to close the through hole.
2. A tip expanding wing or a reinforcing plate is fixed to the lower end side of the pile body so as to close the inside of the pile body. The listed pipe pile.
3. The above-described 1. further comprising a partition for vertically dividing the space in the pile body. The listed pipe pile.
4). The said partition has said partition part which partitions the space in the said pile main body up and down, and the insertion axis | shaft extended upward from this partition part and penetrated by the said through-hole of the said reinforcement plate. The listed pipe pile.
5. On the outer peripheral side of the closing member, there is provided a press contact portion that presses against an inner peripheral surface of the pile body . To 4. The pipe pile as described in any one of.
6). Above 1. To 5. It is a pipe pile construction method using the pipe pile as described in any one of the above, and the step of rotating and penetrating the pipe pile into the ground, the concrete inside the pile body through the through hole of the reinforcing plate, And a step of placing mortar or soil cement .
7). A tip expansion wing or a reinforcing plate is fixed to the lower end side of the pile main body so as to close the inside of the pile main body, and the step of placing the pile main body above the tip expansion wing or the reinforcing plate 5. The process of placing concrete, mortar or soil cement in the inside through the through holes of the reinforcing plate. The pipe pile construction method described .
8). Above 1. To 5. It is a pipe pile structure provided with the pipe pile as described in any one of these, Comprising: The said pipe pile is carrying out rotation penetration to the ground, and in the said pile main body via the above-mentioned penetration hole of the above-mentioned reinforcement plate A pipe pile structure in which concrete, mortar or soil cement is cast .
9. A tip enlarged wing or a reinforcing plate is fixed to the lower end side of the pile main body so as to close the inside of the pile main body, and the reinforcing plate is disposed in the pile main body above the tip enlarged wing or the reinforcing plate. 8. Concrete, mortar, or soil cement is placed through the through holes of the above 8. The pipe pile structure described .

According to the pipe pile of the present invention, since the reinforcing plate fixed to the inner peripheral surface of the upper part of the pile body is provided, it is possible to increase the strength against deformation when a twisting force is applied to the pipe pile that is rotationally penetrated into the ground. it can. For this reason, even if a strong torsional force is applied between the rotating bracket and the lower part of the pipe pile and an excessive stress is generated around the rotating bracket, the rotation transmitting portion will not be deformed as in the past. The rotational force can be transmitted as it is. Thereby, the cutting work accompanying a deformation | transformation of a rotation transmission part becomes unnecessary, and the workability | operativity of rotation penetration work can be improved. Moreover, since the through hole is formed in the reinforcing plate, concrete, mortar, or soil cement can be placed in the pile main body through the through hole of the reinforcing plate. Therefore, even if a relatively thin and inexpensive pipe is used as the pile pipe, a necessary and sufficient horizontal supporting force can be exhibited.
Further, since the closing member is attached to at least one of the reinforcing plate and the pile main body, the pipe pile is rotated and penetrated in a state where the through hole of the reinforcing plate is closed and closed, and concrete, mortar or soil cement is used. The closing member is removed from the reinforcing plate at the time of placing. Thereby, the penetration | invasion of earth and sand etc. into a pile main body is prevented after rotation penetration of a pipe pile. Therefore, it is possible to suppress a decrease in horizontal supporting force due to the placement of concrete, mortar, or soil cement.
In addition, in the case of further comprising a partition for partitioning the space in the pile body vertically, concrete, mortar or soil cement is placed in the upper space partitioned by the partition in the pile body through the through hole of the reinforcing plate. can do.
Moreover, when the said partition has a partition part and an insertion axis | shaft, the insertion axis | shaft penetrated by the through-hole of a reinforcement plate can be moved upwards or downwards, and the partition position by a partition part can be adjusted. . Thereby, the usage-amount of concrete, mortar, or soil cement can be adjusted with the partition position by a partition part according to the hardness etc. of a ground. Therefore, a predetermined horizontal supporting force can be exhibited by placing a minimum amount of concrete, mortar, or soil cement.
Furthermore, when the press contact portion is provided on the outer peripheral side of the closing member, the through hole of the reinforcing plate is closed in a state in which the press contact portion of the closing member is pressed against the inner peripheral surface of the pile main body. Therefore, intrusion of earth and sand (especially muddy water, groundwater, rainwater) into the pile main body after rotation penetration of the pipe pile is prevented.

  According to the pipe pile construction method of the present invention, the pipe pile is rotated and penetrated into the ground, and concrete, mortar or soil cement is placed in the pile main body through the through hole of the reinforcing plate. And since the reinforcement plate fixed to the inner peripheral surface of the upper part of a pile main body is provided, the intensity | strength with respect to a deformation | transformation when a twisting force is added to the pipe pile rotationally penetrated by the ground can be improved. For this reason, even if a strong torsional force is applied between the rotating bracket and the lower part of the pipe pile and an excessive stress is generated around the rotating bracket, the rotation transmitting portion will not be deformed as in the past. The rotational force can be transmitted as it is. Thereby, the cutting work accompanying a deformation | transformation of a rotation transmission part becomes unnecessary, and the workability | operativity of rotation penetration work can be improved. Moreover, since the through hole is formed in the reinforcing plate, concrete, mortar, or soil cement can be placed in the pile main body through the through hole of the reinforcing plate. Therefore, even if a relatively thin and inexpensive pipe is used as the pile pipe, a necessary and sufficient horizontal supporting force can be exhibited.

  According to the pipe pile structure of the present invention, the pipe pile is rotated and penetrated into the ground, and concrete, mortar or soil cement is placed in the pile main body through the through hole of the reinforcing plate. And since the reinforcement plate fixed to the inner peripheral surface of the upper part of a pile main body is provided, the intensity | strength with respect to a deformation | transformation when a twisting force is added to the pipe pile rotationally penetrated by the ground can be improved. For this reason, even if a strong torsional force is applied between the rotating bracket and the lower part of the pipe pile and an excessive stress is generated around the rotating bracket, the rotation transmitting portion will not be deformed as in the past. The rotational force can be transmitted as it is. Thereby, the cutting work accompanying a deformation | transformation of a rotation transmission part becomes unnecessary, and the workability | operativity of rotation penetration work can be improved. Moreover, since the through hole is formed in the reinforcing plate, concrete, mortar, or soil cement can be placed in the pile main body through the through hole of the reinforcing plate. Therefore, even if a relatively thin and inexpensive pipe is used as the pile pipe, a necessary and sufficient horizontal supporting force can be exhibited.

The present invention will be further described in the following detailed description with reference to the drawings referred to, with reference to non-limiting examples of exemplary embodiments according to the present invention. Similar parts are shown throughout the several figures.
It is explanatory drawing for demonstrating the steel pipe pile concerning the reference example 1, (A) is a top view, (B) is the front view which made one part a cross section. It is a disassembled perspective view of the said steel pipe pile. It is explanatory drawing for demonstrating the construction method of the said steel pipe pile. It is a side view which shows the relationship between the said steel pipe pile and the attachment for steel pipe pile attachment, (A) shows the state before mounting | wearing, (B) is the state immediately after mounting | wearing or the state rotated in the counterclockwise direction. (C) shows a state after mounting or a state of rotating clockwise. It is explanatory drawing for demonstrating the construction method of the said steel pipe pile, (A) shows the state which adjusted the position of the partition, (B) shows the state which cut | disconnected and bent the reinforcing bar, (C) is A state where the reinforcing bars are locked to the reinforcing plate is shown, (D) shows a state in the middle of filling concrete, and (E) shows a state where the filling of concrete is completed. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on the reference example 2, (A) shows the state which adjusted the position of the partition, (B) shows the state which cut | disconnected the reinforcing bar and welded it to the reinforcement plate. (C) shows the state in the middle of concrete filling, (D) shows the state of completion of concrete filling. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on the reference example 3, (A) shows the state which adjusted the position of the partition, (B) shows the state which cut | disconnected a reinforcing bar, (C) is The state in the middle of filling concrete is shown, (D) shows the state of completion of filling concrete. It is explanatory drawing for demonstrating the steel pipe pile which concerns on the reference example 4, (A) is a top view, (B) is the front view which made one part a cross section. It is explanatory drawing for demonstrating the construction method of the said steel pipe pile, (A) shows the state which attached the partition tool to the reinforcement plate, (B) shows the state which partitioned off the inside of a pile main body with an expansion body, ( C) shows a state in the middle of filling concrete, and (D) shows a state of completion of filling concrete. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on the reference example 5, (A) shows the state which inserted the partition tool in the pile main body, (B) partitioned the pile main body inside with the expansion body. A state is shown, (C) shows the state in the middle of concrete filling, (D) shows the state of completion of concrete filling. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on Example 6, (A) shows the state which rotationally penetrated the steel pipe pile closed by the blocking member to the ground, (B) shows a blocking member. (C) shows the state where the partition is adjusted, the rebar is cut and welded to the reinforcing plate, (D) shows the state during the concrete filling, and (E) shows the completion of the concrete filling. Shows the state. It is explanatory drawing for demonstrating the steel pipe pile which concerns on Example 7, (A) is a top view, (B) is the front view which made one part a cross section. It is explanatory drawing for demonstrating the construction method of the said steel pipe pile. It is explanatory drawing for demonstrating the construction method of the said steel pipe pile. It is explanatory drawing for demonstrating the construction method of the said steel pipe pile, (A) shows the state which rotationally penetrated the steel pipe pile in the ground, (B) shows the state which pulled out the Yatco (connection pipe), (C ) Indicates a rainy condition. It is explanatory drawing for demonstrating the construction method of the said steel pipe pile, (A) shows the state which carried out the rotation penetration of the steel pipe pile closed with the block member, and (B) shows the state which removes the block member (C) shows the state where the closing member has been removed, (D) shows the state in the middle of filling concrete, and (E) shows the state of completion of filling concrete. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on Example 8, (A) shows the high-stop state which rotationally penetrated the steel pipe pile closed by the closing member to the ground, (B) is closed The state which removes a member is shown, (C) shows the state which removed the closing member, (D) shows the state which cuts a pile head, (E) shows the state which cut the pile head, (F ) Shows the state during the concrete filling, and (G) shows the state of the concrete filling completed. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on Example 9. FIG. It is explanatory drawing for demonstrating the construction method of the said steel pipe pile. It is explanatory drawing for demonstrating the construction method of the said steel pipe pile, (A) shows the state which carried out the rotation penetration of the steel pipe pile closed with the block member, and (B) shows the state which removes the block member (C) shows the state where the closing member has been removed, (D) shows the state in the middle of filling concrete, and (E) shows the state of completion of filling concrete. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on Example 10, (A) shows the high-stop state which rotationally penetrated the steel pipe pile closed by the closing member to the ground, (B) is closed The state which removes a member is shown, (C) shows the state which removed the closing member, (D) shows the state which cuts a pile head, (E) shows the state which cut the pile head, (F ) Shows the state during the concrete filling, and (G) shows the state of the concrete filling completed. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on Example 11, (A) shows the state which rotationally penetrated the steel pipe pile closed by the blocking member to the ground, (B) shows a blocking member. The state which removes is shown, (C) shows the state which removed the closing member, (D) shows the state in the middle of filling of concrete, (E) shows the state of completion of filling of concrete. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on Example 12, (A) shows the high-stop state which rotationally penetrated the steel pipe pile closed by the closing member to the ground, (B) is closed The state which removes a member is shown, (C) shows the state which removed the closing member, (D) shows the state which cuts a pile head, (E) shows the state which cut the pile head, (F ) Shows the state during the concrete filling, and (G) shows the state of the concrete filling completed. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on Example 13, (A) shows the state which carried out the rotation penetration of the steel pipe pile closed by the blocking member in the ground, (B) is a blocking member. The state which removes is shown, (C) shows the state which removed the closing member, (D) shows the state in the middle of filling of concrete, (E) shows the state of completion of filling of concrete. It is explanatory drawing for demonstrating the construction method of the steel pipe pile which concerns on Example 14, (A) shows the high-stop state which rotationally penetrated the steel pipe pile closed by the closing member to the ground, (B) is closed The state which removes a member is shown, (C) shows the state which cuts a pile head, (D) shows the state which adjusted the position of a partition, and (E) shows the state where the rebar was cut and it welded to the pile main part (F) shows a state in the middle of filling concrete, and (G) shows a state of completion of filling concrete. It is a top view which shows the pipe pile provided with another reinforcement plate, (A) is a linear single-letter shape which has a through-hole, (B) is a drum-like single-letter shape which has a through-hole, (C) is a through-hole. It has a cross shape. It is the front view which made the cross section the part which shows another steel pipe pile. Furthermore, it is the front view which made the cross section the part which shows another steel pipe pile. It is explanatory drawing for demonstrating another blocking member. Furthermore, it is explanatory drawing for demonstrating another blocking member. It is the schematic which shows a steel pipe pile driver. It is a side view which shows the relationship between the conventional pipe pile and the attachment for steel pipe piles, (A) shows the state before mounting, (B) is the state which is rotating in the state immediately after mounting or the counterclockwise direction. (C) shows a state after mounting or a state of rotating clockwise. It is a cross-sectional view which shows the rotation transmission part of the conventional pipe pile. It is explanatory drawing for demonstrating the construction method of the conventional pipe pile.

  The items shown here are for illustrative purposes and exemplary embodiments of the present invention, and are the most effective and easy-to-understand explanations of the principles and conceptual features of the present invention. It is stated for the purpose of providing what seems to be. In this respect, it is not intended to illustrate the structural details of the present invention beyond what is necessary for a fundamental understanding of the present invention. It will be clear to those skilled in the art how it is actually implemented.

1. Pipe pile This embodiment 1. The pipe pile according to the present invention is fixed to the pile main body, the rotating metal fitting that is fixed to the outer peripheral surface of the upper portion of the pile main body and external force is applied to rotate the pile main body, and the inner peripheral surface of the upper portion of the pile main body. A reinforcing plate, wherein the reinforcing plate is formed with through holes for placing concrete, mortar, or soil cement in the pile body (see, for example, FIGS. 1 and 12, etc.) ).

  The dimensions, shape, structure, material, etc. of the pipe pile are not particularly limited. This pipe pile is usually a metal circular pipe. As this pipe pile, a steel pipe pile, cast iron, etc. can be mentioned, for example. Moreover, the lower end part of a pipe pile can be provided with a front-end | tip expansion wing | blade as needed, or can be left as a raw pipe without attaching anything. Moreover, as long as the said rotation metal fitting adheres to the outer peripheral surface of the upper part of a pipe pile, the magnitude | size, shape, structure, material, quantity, etc. do not ask | require in particular. The number of the rotating metal fittings can be appropriately selected such as 1 to 4 pieces. Moreover, the arrangement | positioning can be arrange | positioned at equal intervals in the circumferential direction, or can be arrange | positioned at other arbitrary intervals. The fixing method of the rotating metal fitting can be selected as appropriate, such as welding or adhesion. The shape of the rotating metal fitting may be a rectangular parallelepiped shape or a kamaboko shape having a flat bottom surface and a cylindrical top surface. Furthermore, the through-hole of the reinforcing plate can be used as a part to be gripped by the operator when the reinforcing plate is fixed (for example, welded) to the pile body. The “soil cement” is intended to be a mixture of on-site earth and sand, cement and water.

  Embodiment 1 As a pipe pile which concerns on this, the form further equipped with the partition which partitions the space in a pile main body up and down can be mentioned, for example (refer FIG.1 and FIG.8 etc.).

  Embodiment 1 As the pipe pile according to the embodiment, for example, the partition has a partition part that partitions the space in the pile main body up and down, and an insertion shaft that extends upward from the partition part and is inserted into the through hole of the reinforcing plate. Can be mentioned. As this partitioning tool, for example, (1) the partitioning part is movable in the axial direction within the pile main body and is prevented from coming off by a reinforcing plate and a restriction part provided at the lower part of the pile main body. (2) The partition part can be inserted into the through hole of the reinforcing plate and can be inserted into the through hole of the reinforcing plate. The expansion body is inflated by supply and press-contacted to the inner peripheral surface of the pile body, and the insertion shaft is a fluid supply pipe connected to the expansion body so as to supply fluid to the expansion body (for example, FIG. 8). Etc.). Among these, it is preferable that it is the said (1) form. The partition can be configured easily and inexpensively, and the reinforcing strength of concrete, mortar or soil cement placed by reinforcing bars can be increased. In addition, the partition is built in the pile body, making pipe piles easier to handle. This is because it has advantages such as superiority. In addition, as the partitioning portion in the form (1), for example, a disc body (see, for example, FIG. 1), a cylindrical body having a bottom wall (see, for example, FIG. 27), and the like are spaced apart at predetermined intervals in the axial direction. In addition, a plurality of disc bodies (see, for example, FIG. 28), solid cylinder bodies, hollow cylinder bodies, and the like can be given.

  Embodiment 1 As the pipe pile according to the present invention, for example, at least one of the reinforcing plate and the pile main body is attached with a detachable closing member so as to close the through hole (for example, FIG. 11 and FIG. 12 etc. Reference). The material, shape, size, number, etc. of the closing member are not particularly limited. Examples of the material of the closing member include wood, plastic, and metal.

  On the outer peripheral side of the closing member, for example, a pressure contact portion that is in pressure contact with the inner peripheral surface of the pile main body can be provided (for example, see FIG. 12 and the like). For example, the closing member is formed by laminating a disk-shaped elastic material made of foam, rubber, or the like on the back surface side of the main body with a handle, and the outer peripheral side of the elastic material can constitute the pressure contact portion. Thereby, while being able to improve the detachability of the closing member with respect to a pile main body, the detachability of the closing member with a handle can be improved.

  Embodiment 1 As a pipe pile concerning, for example, the above-mentioned reinforcement plate can mention the form which exists inside the attachment part of a rotation metal fitting. Thereby, the deformation | transformation by the local stress which arose around the rotation metal fitting can be suppressed more strongly. This reinforcing plate can be a flat plate made of steel or the like. The thickness of the reinforcing plate can be set according to the diameter of the tube and the load, and can be, for example, 6 to 16 mm. Moreover, it is preferable that a reinforcement plate is provided perpendicularly | vertically with respect to the axial direction of a pipe pile, and is the center of the attachment site | part of a rotary bracket. In addition, as a method for fixing the reinforcing plate, welding, adhesion, press fitting, or the like can be used, but welding is preferable because a large load is applied. Furthermore, it is preferable that the reinforcing plate has a disk shape. This is because the entire circumference can be reinforced and the strength of the reinforcement can be maximized compared to other shapes.

2. Pipe pile construction method This embodiment 2. The pipe pile construction method according to the embodiment 1 described above. A pipe pile construction method using the pipe pile, the step of rotating and penetrating the pipe pile into the ground, and the step of placing concrete, mortar or soil cement in the pile body through the through holes of the reinforcing plate, It is characterized by providing. This pipe pile construction method can further be provided with the process of partitioning the space in a pile main part up and down with a partition tool, for example. In addition, the pipe pile is usually rotated and penetrated into the ground by applying a circumferential external force to the rotating metal fitting to rotate the pile main body and simultaneously applying a downward external force to the upper end of the pile main body to lower it. The

  Embodiment 2 As the pipe pile construction method according to the above, for example, the partition includes a partition part that partitions the space in the pile body up and down, an insertion shaft that extends upward from the partition part and is inserted into the through hole of the reinforcing plate, and In the partitioning step, the partitioning position by the partitioning part can be adjusted by moving the insertion shaft upward or downward through the through hole of the reinforcing plate. Thereby, the usage-amount of concrete, mortar, or soil cement can be adjusted with the partition position by a partition part according to the hardness etc. of a ground. Therefore, a predetermined horizontal supporting force can be exhibited by placing a minimum amount of concrete, mortar, or soil cement. In this case, in the partitioning step, it is preferable to lock or fix the insertion shaft after the position adjustment to the reinforcing plate. In particular, as the partitioning step in the case of the partition of the form (1), (a) temporarily fixing the reinforcing bar of the partition after position adjustment and cutting the upper part thereof, the end of the reinforcing bar on the cutting side A form in which the reinforcing bar is bent and locked to the reinforcing plate (see, for example, FIG. 5), and (b) a form in which the reinforcing bar of the partition after the position adjustment is welded to the reinforcing plate and then the upper part is cut (see, for example, FIG. 6). And the like. Among these, from the viewpoint of workability, the above (b) form is preferable.

  Embodiment 2 As the pipe pile construction method according to the present invention, for example, in the step of rotating and penetrating, the pipe pile is rotated and penetrated in a state where the through hole of the reinforcing plate is plugged with a member (see, for example, FIGS. 11 and 12). Can be mentioned. In this case, for example, (1) the pipe pile is rotated and penetrated in a state where the pressure contact portion on the outer peripheral side of the closing member is in pressure contact with the inner peripheral surface of the pile body and the through hole is blocked, and the blocking member is inserted after the rotation penetration. Form removed from the pile body, (2) The pipe pile is rotated and penetrated in a state where the sealing member is temporarily fixed to the reinforcing plate by bonding or the like and the through hole is blocked, and the temporary fixing is released after the rotation penetration and the blocking member is released. The form etc. which remove | separate from a reinforcement plate can be mentioned. By these, the penetration | invasion of earth and sand etc. to the pipe pile penetrated by rotation can be prevented more reliably.

3. Pipe pile structure This embodiment 3. FIG. The pipe pile structure according to the embodiment 1 described above. The pipe pile structure is equipped with a pipe pile, the pipe pile is rotationally inserted into the ground, and concrete, mortar or soil cement is placed in the pile body through the through holes of the reinforcing plate It is characterized by. In this pipe pile structure, for example, concrete, mortar, or soil cement can be placed in a portion space partitioned by the partition in the pile body.

  Embodiment 3 As the pipe pile structure according to the above, for example, the partition includes a partition part that partitions the space in the pile body up and down, an insertion shaft that extends upward from the partition part and is inserted into the through hole of the reinforcing plate, and And the insertion shaft can be locked or fixed to the reinforcing plate. In this case, as the case of the partition in the form (1), (a) the end of the reinforcing bar is bent and locked to the reinforcing plate (for example, see FIG. 5), (b) the reinforcing bar The end of each can be in a form welded to a reinforcing plate (see, for example, FIG. 6). Among these, from the viewpoint of workability, the above (b) form is preferable.

  Embodiment 3 Examples of the pipe pile structure according to (1) include (1) a form formed by one pipe pile, and (2) a form formed by connecting a plurality of pipe piles in the axial direction.

  As the form (1), for example, (a) a tip expansion wing is provided on the lower end side of the pile main body so as to close the inside of the pile main body, and concrete, mortar or soil cement is provided in the pile main body above the tip expansion wing. (B) A reinforcing plate is fixed at the lower end side of the pile body so as to close the inside of the pile body, and concrete is placed in the pile body above the reinforcing plate. , Mortar or soil cement is placed, (c) Concrete, mortar or soil cement is placed in the upper space of the pile body divided up and down by the partition. Can do.

  As the above (2) form, for example, (a) a reinforcing plate is fixed to a pipe pile below the uppermost stage so as to close the inside of the pile main body, and concrete, mortar or soil is placed in the pile main body above this reinforcing plate. A form in which cement is placed (for example, see FIG. 20 etc.), (b) A reinforcing plate is fixed so as to block the inside of the pile body in the uppermost pipe pile, and concrete is placed in the pile body on the upper side of this reinforcing plate. Mortar or soil cement is cast (for example, see FIG. 22 etc.), (c) Concrete, mortar or soil cement is cast in the upper space in the pile body partitioned vertically by the partition The form (for example, refer FIG. 24 etc.) etc. which can be mentioned.

Hereinafter, the present invention will be specifically described with reference examples 1 to 5 and examples 6 to 14 with reference to the drawings. In this reference example 1-5 and Example 6-14 illustrate the steel pipe pile as "Kankui" according to the present invention.

< Reference Example 1>
(1) Structure of steel pipe pile As shown in FIGS. 1A and 1B and FIG. 2, the steel pipe pile 1 according to the first reference example has a cylindrical pile body 2 and an outer periphery of the upper portion of the pile body 2. A rotating metal fitting 3 that is fixed to the surface and is applied with an external force in the circumferential direction to rotate the pile main body 2, a reinforcing plate 4 that is fixed to the inner peripheral surface of the upper portion of the pile main body 2, and a space in the pile main body 2 And a partition 5 for partitioning the top and bottom.

  In this embodiment, as the steel pipe pile 1, a plurality of pile main bodies 2 are connected in the axial direction via an annular backing member 7, and a tip expansion wing is provided at the lower end of the pile main body 2 on the lowest end side. 8 is provided as an example.

  The rotating metal fitting 3 is provided at two locations on the opposite side in the circumferential direction near the upper end of the pile body 2. Each rotary metal fitting 3 has a rectangular parallelepiped shape whose longitudinal direction is the direction along the axial direction of the pile body 2 and is fixed by welding.

  The reinforcing plate 4 is a flat plate made of steel, and is provided perpendicularly to the axial direction of the pile body 2 at the center of the mounting position of the rotary fitting 3. The reinforcing plate 4 is fixed by welding. The reinforcing plate 4 is formed in a disc shape. In addition, a circular through hole 4 a for placing concrete in an upper space partitioned by the partition 5 in the pile body 2 is formed at the center of the reinforcing plate 4. The through-hole 4a of the reinforcing plate 4 is also used as a part to be gripped by an operator when the reinforcing plate 4 is welded to the pile body 2.

  The partition 5 includes a disc body 10 (illustrated as a “partition section” according to the present invention) that divides the space in the pile main body 2 up and down, and extends upward from the upper surface of the disc body 10. There are a plurality of (four in the figure) reinforcing bars 11 (illustrated as “insertion shafts” according to the present invention) inserted through the through holes 4a. The disk body 10 is movable in the axial direction within the pile main body 2 and is prevented from coming off by a reinforcing plate 4 and a restriction portion 12 provided at the lower portion of the pile main body 2. Further, the upper end portion of each reinforcing bar 11 protrudes above the reinforcing plate 4 through the through hole 4 a of the reinforcing plate 4 in a state where the disk body 10 is in contact with the restricting portion 12.

(2) Construction method of steel pipe pile Next, the construction method of the steel pipe pile of the said structure is demonstrated. In addition, in a present Example, the case where the steel pipe pile 1 is rotationally penetrated into the ground using the well-known steel pipe pile driver 100 (refer FIG. 31) and the attachment 107 (refer FIG. 32) for steel pipe pile attachment is demonstrated, These The same reference numerals are used for the configuration of and the detailed description is omitted.

  First, the steel pipe pile 1 is suspended by the steel pipe pile driving machine 100 (see FIG. 3A), and the attachment 107 for attaching the steel pipe pile is mounted on the steel pipe pile 1 (see FIG. 3B). At this time, as shown in FIG. 4 (A), the main body portion 108 of the attachment 107 for attaching the steel pipe pile is fitted to the upper end portion of the steel pipe pile 1, and the opening 112 of the locking groove 111 is used as the rotating bracket of the steel pipe pile 1. 3 (see FIG. 4B), the steel pipe pile attachment 107 is rotated so that the rotating metal fitting 3 engages with the locking portion 113 of the locking groove 111 (FIG. 4C). reference). Here, since the reinforcing plate 4 is fixed to the inside of the pile body 2, the engagement with the steel pipe pile mounting attachment 107 is not hindered.

  Next, the pile core of the steel pipe pile 1 is set at a predetermined position on the ground (see FIG. 3C). After that, the pile rotating machine 105 is lowered along the leader 103, the upper end surface of the steel pipe pile 1 is abutted against the pressing portion 109 of the steel pipe pile mounting attachment 107 and pressed downward, and at the same time, the motor 104 of the pile rotating machine 105 is turned on. The rotating force is driven and transmitted to the rotating metal fitting 3 of the steel pipe pile from the side of the locking groove 111 of the attachment 107 for attaching the steel pipe pile, and the steel pipe pile 1 is rotated and penetrated into the ground (see FIG. 3 (d)). . In addition, the side surface of the latching groove | channel 111 which the rotation metal fitting 3 contact | abuts is opposite by the rotation direction of the said steel pipe pile 1 (refer FIG. 4 (B), (C)).

  Next, the rotary penetration of the steel pipe pile 1 is temporarily stopped (see FIG. 3 (e)), the Yatco 200 is set on the pile rotating machine 105, and the rotary penetration of the steel pipe pile 1 is resumed (FIG. 3 (f)). reference). Next, the steel pipe pile 1 is rotated and penetrated to a predetermined depth of the ground (see FIG. 3G), and the YATCO 200 is pulled out to complete the rotation penetration work of the steel pipe pile 1 (see FIG. 3H).

  Here, when excessive stress is generated around the rotary fitting 3 during the rotation penetration of the steel pipe pile 1, this stress acts in the direction of diameter reduction or diameter expansion of the steel pipe pile 1. The deformation of the steel pipe pile 1 is suppressed by being canceled out by the plate 4.

  Next, in the steel pipe pile 1 rotated and penetrated into the ground, each reinforcing bar 11 is pulled up to a predetermined height position and temporarily fixed to cut the upper part of each reinforcing bar 11 (see FIG. 5A). Next, the cut end side of each reinforcing bar 11 is bent (see FIG. 5B), the temporary fixing of each reinforcing bar 11 is released and lowered to a predetermined height position, and the bent portion of each reinforcing bar 11 is reinforced plate 4. (See FIG. 5C). At this time, the space in the pile body 2 is partitioned vertically by the disc body 10. Thereafter, the upper space partitioned by the disk body 10 in the pile body 2 starts to be filled with the concrete 300 (or mortar) through the through holes 4a of the reinforcing plate 4 (see FIG. 5D). Thereafter, when the filling of the concrete 300 is completed, a series of construction work of the steel pipe piles 1 is completed (see FIG. 5E).

(3) Effect of Reference Example As described above, according to the steel pipe pile 1 of the reference example 1, the steel plate pile that is rotationally inserted into the ground is provided with the reinforcing plate 4 fixed to the inner peripheral surface of the upper part of the pile body 2. The strength against deformation when a torsional force is applied to 1 can be increased. For this reason, even if a strong twisting force is applied between the rotating metal fitting 3 and the lower portion of the steel pipe pile 1 and an excessive stress is generated around the rotating metal fitting 3, the rotation transmitting portion is deformed as in the conventional case. There is no problem, and the rotational force can be transmitted as it is. Thereby, the cutting work accompanying a deformation | transformation of a rotation transmission part becomes unnecessary, and the workability | operativity of rotation penetration work can be improved. Further, since the through holes 4 a are formed in the reinforcing plate 4, the concrete 300 (or mortar) can be placed in the pile main body 2 through the through holes 4 a of the reinforcing plate 4. Therefore, even if a relatively thin and inexpensive steel pile pipe 1 is adopted, a necessary and sufficient horizontal supporting force can be exhibited.

  Further, in this embodiment, since the partition 5 that partitions the space in the pile body 2 up and down is further provided, the upper space partitioned by the partition 5 in the pile body 2 is provided through the through holes 4a of the reinforcing plate 4. Concrete 300 (or mortar) can be placed.

  Further, in this embodiment, the partition 5 is configured to include the disk body 10 and the reinforcing bar 11, so that the reinforcing bar 11 inserted through the through hole 4 a of the reinforcing plate 4 is moved upward or downward. The partition position by the disk body 10 can be adjusted. Thereby, the usage-amount of concrete 300 can be adjusted with the partition position by the disk body 10 according to the hardness etc. of the ground. Therefore, a predetermined horizontal supporting force can be exhibited by placing the minimum necessary amount of concrete 300. In addition, the partition 5 can be configured easily and inexpensively, and the reinforcing strength of the concrete 300 placed by the reinforcing bars 11 can be increased. Furthermore, since the partition 5 is built in the pile main body 2, it has advantages, such as being excellent in the handleability of the steel pipe pile 1. FIG.

  Further, in this embodiment, the upper part of the reinforcing bar 11 of the partition member 5 after the position adjustment is cut and bent, and the bent portion is locked on the reinforcing plate 4, so that the reinforcing plate 4 is used. The partition 5 can be positioned and fixed easily and quickly.

  Further, in the present embodiment, the reinforcing plate 4 is provided inside the mounting portion of the rotating metal fitting 3, so that deformation due to local stress generated around the rotating metal fitting 3 can be suppressed more strongly. Furthermore, since the reinforcement plate 4 is fixed by welding, it can act in a direction that cancels the stress acting in the direction of expanding the diameter of the steel pipe pile 1 and can suppress deformation more strongly. And since the reinforcement plate 4 is disk shape, it can reinforce over the perimeter and can make the reinforcement | strengthening intensity | strength strongest compared with another shape. Moreover, since the reinforcement plate 4 has the through-hole 4a, when fixing the reinforcement plate 4 to the steel pipe pile 1 by welding, it can weld, hold | gripping the edge of the through-hole 4a, and workability of welding. Can be increased. Furthermore, when the concrete 300 is poured into the steel pipe pile 1 after penetration, the concrete 300 flows down from the through holes 4a of the reinforcing plate 4, so that the concrete 300 can be poured smoothly without hindering the flow.

< Reference Example 2>
Next, the construction method of the steel pipe pile which concerns on the reference example 2 is demonstrated. In addition, in this reference example 2, while attaching the same code | symbol to the structural part substantially the same as the steel pipe pile 1 of the said reference example 1, detailed description is abbreviate | omitted and the effect | action substantially the same as the construction method of the steel pipe pile of the said reference example 1 Detailed explanation is omitted.

(1) Construction method of steel pipe piles In the construction method of steel pipe piles according to the present reference example 2, in the steel pipe pile 1 that is rotationally penetrated into the ground, each reinforcing bar 11 is pulled up to a predetermined height position and each reinforcing bar 11 is reinforced. 4 (see FIG. 6A). At this time, the space in the pile body 2 is partitioned vertically by the disc body 10. Next, the upper part of each reinforcing bar 11 protruding upward from the steel pipe pile 1 is cut (see FIG. 6B). Next, the concrete 300 (or mortar) starts to be filled into the upper space partitioned by the partition 5 in the pile body 2 through the through holes of the reinforcing plate 4 (see FIG. 6C). Thereafter, when the filling of the concrete 300 is completed, a series of construction work of the steel pipe pile 1 is completed (see FIG. 6D).

(2) Effects of Reference Example From the above, according to the steel pipe pile construction method of Reference Example 2, in addition to the effects and effects similar to those of the steel pipe pile construction method of Reference Example 1 above, after position adjustment Since the upper part is cut after the reinforcing bar 11 of the partition member 5 is welded to the reinforcing plate 4, the partition member 5 can be positioned and fixed easily and quickly using the reinforcing plate 4.

< Reference Example 3>
Next, the construction method of the steel pipe pile concerning the reference example 3 is demonstrated. In addition, in the present reference example 3 , the same reference numerals are given to the same components as those in the steel pipe pile 1 of the reference example 1 and the detailed description thereof will be omitted, and the operation similar to that of the steel pipe pile construction method of the reference example 1 will be omitted. Detailed explanation is omitted.

(1) Steel pipe pile construction method In the steel pipe pile construction method according to Reference Example 3, the rotation penetration is completed in a state where the steel pipe pile 1 protrudes from the surface of the ground (high-stop state). In this case, the part which protrudes from the ground of the steel pipe pile 1 is cut | disconnected (refer FIG. 7 (A)). Next, the upper part of each reinforcing bar 11 of the partition 5 in a state of being placed on the restricting portion 12 is cut (see FIG. 7B). At this time, the space in the pile body 2 is partitioned vertically by the disc body 10. Next, the upper space partitioned by the partition 5 in the pile main body 2 starts to be filled with concrete 300 (or mortar) (see FIG. 7C). Thereafter, when the filling of the concrete 300 is completed, the construction work of the series of steel pipe piles 1 is completed (see FIG. 7D).

(3) Effects of Reference Example From the above, according to the steel pipe pile construction method of Reference Example 3, in addition to the effects and effects similar to those of the steel pipe pile construction method of Reference Example 1, the steel pipe pile 1 Even if it is a case where it is rotationally penetrated in the state where it remains high, the concrete 300 can be placed in the upper space partitioned by the partition 5 in the pile body 2 to increase the horizontal support force.

< Reference Example 4>
Next, a steel pipe pile according to Reference Example 4 will be described. In addition, in this reference example 4, while attaching the same code | symbol to the structural part substantially the same as the steel pipe pile 1 of the said reference example 1, detailed description is abbreviate | omitted and the effect | action substantially the same as the construction method of the steel pipe pile of the said reference example 1 Detailed explanation is omitted.

(1) Configuration of Steel Pipe Pile As shown in FIGS. 8A and 8B, a steel pipe pile 15 according to Reference Example 4 includes a pile main body 2, a rotating bracket 3, a reinforcing plate 4, and the pile main body 2. And a partition 16 for partitioning the inner space up and down.

  The partition 16 can be inserted into the through-hole 4a of the reinforcing plate 4 and is expanded by supplying fluid to be in contact with the inner peripheral surface of the pile body 2 (illustrated as a “partition section” according to the present invention). And a fluid supply pipe 18 (illustrated as an “insertion shaft” according to the present invention) connected so as to be able to supply fluid to the expansion body 17.

(2) Construction method of steel pipe pile Next, the construction method of the steel pipe pile of the said structure is demonstrated. In the steel pipe pile 15 rotated and penetrated into the ground, the partition plate 16 is inserted into the pile body 2 and the mounting plate 19 attached to the upper part of the fluid supply pipe 18 is locked onto the reinforcing plate 4 (FIG. 9A). reference). Next, fluid such as air or water is supplied to the expansion body 17 from the upper end of the fluid supply pipe 18 to expand the expansion body 17 (see FIG. 9B). At this time, the space in the pile body 2 is partitioned vertically by the expanded body 17. Thereafter, the upper space partitioned by the expansion body 17 in the pile body 2 starts to be filled with the concrete 300 (or mortar) through the through holes 4a of the reinforcing plate 4 (see FIG. 9C). Thereafter, when the filling of the concrete 300 is completed, a series of construction work of the steel pipe piles 15 is completed (see FIG. 9D).

(3) Effect of Example From the above, according to the steel pipe pile 15 of this reference example 4, in addition to having the effect and effect substantially the same as the steel pipe pile 1 of the said reference example 1, the partition 16 is made into an expansion body. 17 and the fluid supply pipe 18, the fluid supply pipe 18 inserted through the through hole 4 a of the reinforcing plate 4 is moved upward or downward to adjust the partition position by the expansion body 17. Can do. Thereby, the usage-amount of concrete 300 can be adjusted with the partition position by the expansion body 17 according to the hardness etc. of a ground. Therefore, a predetermined horizontal supporting force can be exhibited by placing the minimum necessary amount of concrete 300.

< Reference Example 5>
Next, a steel pipe pile according to Reference Example 5 will be described. In addition, in this reference example 5, while attaching | subjecting the same code | symbol to the structural part substantially the same as the steel pipe pile 15 of the said reference example 4, detailed description is abbreviate | omitted and the effect | action substantially the same as the construction method of the steel pipe pile of the said reference example 4 Detailed explanation is omitted.

(1) Construction method of steel pipe pile In the construction method of the steel pipe pile according to the present reference example 5, the rotary penetration is completed in a state where the steel pipe pile 15 protrudes from the surface of the ground (high stop state). In this case, the part which protrudes from the ground of the steel pipe pile 15 is cut | disconnected, and the partition 16 is inserted in the pile main body 2 (refer FIG. 10 (A)). Next, fluid such as air or water is supplied to the expansion body 17 from the upper end of the fluid supply pipe 18 to expand the expansion body 17 (see FIG. 10B). At this time, the space in the pile body 2 is partitioned vertically by the expanded body 17. After that, the upper space partitioned by the expansion body 17 in the pile body 2 starts to be filled with concrete 300 (or mortar) (see FIG. 10C). Thereafter, when the filling of the concrete 300 is completed, a series of construction work of the steel pipe piles 15 is completed (see FIG. 10D).

(3) Effect of Reference Example From the above, according to the steel pipe pile construction method of Reference Example 5, in addition to the effects and effects similar to those of the steel pipe pile construction method of Reference Example 4, the steel pipe pile 15 Even if it is a case where it is rotationally penetrated in the state where it remains high, the concrete 300 can be placed in the upper space partitioned by the partition 16 in the pile body 2 to increase the horizontal support force.

<Example 6>
Next, the steel pipe pile which concerns on Example 6 is demonstrated. In addition, in the present Example 6, while attaching the same code | symbol to the structural part substantially the same as the steel pipe pile 1 of the said reference example 1, detailed description is abbreviate | omitted and the effect | action substantially the same as the construction method of the steel pipe pile of the said reference example 1 Detailed explanation is omitted.

(1) Configuration of Steel Pipe Pile In the steel pipe pile 1 according to the sixth embodiment, the reinforcing plate 4 is detachably attached with a wooden closing member 21 in a disk shape so as to close the through hole 4a.

(2) Construction method of steel pipe pile Next, the construction method of the steel pipe pile of the said structure is demonstrated. First, in the steel pipe pile 1 before being rotationally inserted into the ground, the closing member 21 is temporarily fixed to the reinforcing plate 4 with a tape, an adhesive or the like. And the steel pipe pile 1 is rotationally penetrated in the ground in the state which plugged up the through-hole 4a of the reinforcement plate 4 with the member 21 (refer FIG. 11 (A)). Next, in the steel pipe pile 1 rotated and penetrated into the ground, the temporary fixing of the closing member 21 is released and removed from the reinforcing plate 4 (see FIG. 11B). Next, each reinforcing bar 11 is pulled up to a predetermined height position, and each reinforcing bar 11 is welded to the reinforcing plate 4, and then the upper part of each reinforcing bar 11 is cut (see FIG. 11C). At this time, the space in the pile body 2 is partitioned vertically by the disc body 10. Thereafter, the upper space partitioned by the partition 5 in the pile body 2 starts to be filled with concrete 300 (or mortar) through the through holes 4a of the reinforcing plate 4 (see FIG. 11D). Next, when the concrete filling is completed, a series of construction work of the steel pipe piles 1 is completed (see FIG. 11E).

(3) Effect of Example From the above, according to the steel pipe pile 1 of the present Example 6, in addition to exhibiting substantially the same operation and effect as the steel pipe pile 1 of the reference example 1, the reinforcing plate 4 has a through hole. Since the closing member 21 is detachably attached so as to close 4a, the steel pipe pile 1 can be rotated and penetrated into the ground in a state where the through hole 4a of the reinforcing plate 4 is closed with the closing member 21, and earth and sand into the pile main body 2 etc. Can be prevented from entering.

<Example 7>
Next, the steel pipe pile which concerns on Example 7 is demonstrated. In the present embodiment 7, the substantially the same structure portions as steel pile 1 of Reference Example 1 while omitting the detailed with the same reference numerals, the reference example 1 of the steel pipe pile 1 construction methods substantially similar to Detailed explanation of the action is omitted. Moreover, in the present Example 7, the form which consists of one steel pipe pile 1 (single pile) is illustrated as a pipe pile structure. Furthermore, in the present Example 7, the means equivalent to the partition 5 of Example 1 shall not be used.

(1) Configuration of Steel Pipe Pile In the steel pipe pile 1 according to the seventh embodiment, as shown in FIG. 12, a closing member 30 is detachably attached to the pile body 2 so as to close the through holes 4 a of the reinforcing plate 4. ing. The closing member 30 is formed by laminating a disk-shaped elastic material 32 made of foam, rubber or the like on the back side of the main body 31 with a handle 31a. The outer peripheral side of the elastic material 32 is a press contact portion 32 a that presses the inner peripheral surface of the pile body 2. Moreover, the front-end | tip expansion wing | wing 8 is provided in the lower end part of the pile main body 2 so that the lower end part may be plugged up.

(2) Construction method of steel pipe pile Next, the construction method of the steel pipe pile 1 of the said structure is demonstrated. First, the closing member 30 is set on one end side of the steel pipe pile 1 (see FIG. 13A). Next, the steel pipe pile 1 is suspended by the steel pipe pile driving machine 100 (see FIG. 13B), and the attachment 107 for attaching the steel pipe pile is attached to the steel pipe pile 1 (see FIG. 13C). Next, the pile core of the steel pipe pile 1 is set at a predetermined position on the ground (see FIG. 13D). Then, the steel pipe pile 1 is rotated and penetrated to the ground to a predetermined level (see FIGS. 13E and 13F). Next, the Yatco 200 is set on the pile rotating machine 105 to resume the rotation penetration of the steel pipe pile 1 (see FIGS. 14A to 14D). Next, the steel pipe pile 1 is rotated and penetrated to a predetermined depth in the ground, and the Yatco 200 is pulled out to complete the rotary penetration work of the steel pipe pile 1 (see FIGS. 14E to 14G).

  In this embodiment, as shown in FIG. 13 (A), the closing member 30 is set on the steel pipe pile 1 before being rotationally penetrated into the ground. However, the present invention is not limited to this. For example, FIG. As shown in (A) and (B), before the Yatco 200 is set, the closing member 30 may be set on the steel pipe pile 1 that is rotationally penetrated into the ground.

  Here, as shown in FIGS. 15 (A) and 15 (B), when the steel pipe pile 1 is rotated and penetrated to a predetermined depth and the Yatco 200 is pulled out, the ground may collapse a little, but the inside of the pipe of the steel pipe pile 1 head. Is blocked by the closing member 30, earth and sand, muddy water, etc. do not enter the steel pipe pile 1. In addition, as shown in FIG. 15C, in the raining state, the ground may collapse a little due to infiltration of rainwater, groundwater, etc., but the inside of the pipe of the steel pipe pile 1 head is blocked by the closing member 30, so the groundwater Muddy water, earth and sand, etc. do not enter the steel pipe pile 1.

  Next, as shown in FIGS. 16 (A) to 16 (C), the closing member 30 is removed from the steel pipe pile 1 that is rotationally inserted into the ground. Next, as shown in FIG. 16D, the pile body 2 starts to be filled with concrete 300 (or mortar) through the through holes 4a of the reinforcing plate 4. At this time, the concrete 300 (or mortar) thrown into the pile main body 2 is received by the tip expanding blade 8 and does not leak to the outside from the lower end side of the pile main body 2. Thereafter, as shown in FIG. 16E, when the filling of the concrete 300 is completed, the construction work of the series of steel pipe piles 1 is completed.

(3) Effect of Example From the above, according to the steel pipe pile 1 of the present Example 7, in addition to exhibiting substantially the same operations and effects as the steel pipe pile 1 of the reference example 1, the pile member 2 is plugged with the closing member 30. Since the steel pipe pile 1 can be rotated and penetrated into the ground in a state where the through hole 4a of the reinforcing plate 4 is closed and the member 21 is closed, the penetration of earth and sand into the pile body 2 can be prevented. .

  Moreover, in the present Example 7, since the press contact part 32a was provided in the outer peripheral side of the closing member 30, the through-hole 4a of the reinforcement plate 4 in the state which the press contact part 32a of the closing member 30 press-contacted to the internal peripheral surface of the pile main body 2. Is blocked. Therefore, intrusion of earth and sand (especially muddy water, groundwater, rainwater) into the pile main body 2 can be prevented after the steel pipe pile 1 rotates and penetrates.

  Furthermore, in the present Example 7, since the handle 31a was provided in the main body 31 of the closing member 30, the detachability of the closing member 30 with respect to the pile main body 2 can be improved.

<Example 8>
Next, the construction method of the steel pipe pile which concerns on Example 8 is demonstrated. In addition, in this Example 8, while attaching the same code | symbol to the structural part substantially the same as the steel pipe pile 1 of the said Example 7, detailed description is abbreviate | omitted and it is substantially the same as the construction method of the steel pipe pile 1 of the said Example 7. Detailed explanation of the action is omitted.

(1) Construction method of steel pipe pile In the construction method of steel pipe pile 1 according to the eighth embodiment, as shown in FIG. 17 (A), the steel pipe pile 1 is rotated in a state protruding from the ground surface (high rest state). The intrusion is completed. In this case, as shown in FIGS. 17B and 17C, the earth and sand around the head portion of the steel pipe pile 1 is removed, and the closing member 30 is removed from the pile body 2. Next, as shown to FIG.17 (D) (E), the part which protrudes from the ground of the steel pipe pile 1 is cut | disconnected. Next, as shown in FIG. 17F, the pile body 2 starts to be filled with concrete 300 (or mortar). Thereafter, as shown in FIG. 17 (G), when the filling of the concrete 300 is completed, a series of construction work of the steel pipe piles 1 is completed.

(3) Effect of Example From the above, according to the construction method of the steel pipe pile 1 of the present Example 8, in addition to exhibiting substantially the same operation and effect as the construction method of the steel pipe pile 1 of the Example 7, the steel pipe Even when the pile 1 is rotated and penetrated in a state of staying high, the concrete 300 can be placed in the pile body 2 to increase the horizontal support force.

<Example 9>
Next, the steel pipe pile which concerns on Example 9 is demonstrated. In addition, in the present Example 9, while attaching the same code | symbol to the structural part substantially the same as the steel pipe pile 1 of the said Example 7, detailed description is abbreviate | omitted and it is substantially the same as the construction method of the steel pipe pile 1 of the said Example 7. Detailed explanation of the action is omitted. Moreover, in the present Example 9, the form formed by connecting the multiple (for example, two) steel pipe pile 1 to an axial direction as a pipe pile structure is illustrated.

(2) Construction method of steel pipe pile The construction method of the steel pipe pile 1 of the said structure is demonstrated. First, the lower steel pipe pile 1 is suspended by the steel pipe pile driving machine 100 (see FIG. 18A), and the attachment 107 for attaching the steel pipe pile is attached to the steel pipe pile 1 (see FIG. 18B). Next, the pile core of the steel pipe pile 1 is set at a predetermined position on the ground (see FIG. 18C). Then, the steel pipe pile 1 is rotated and penetrated to the ground to a predetermined level (see FIGS. 18D and 18E). Next, the closing member 30 is set on one end side of the upper steel pipe pile 1 (see FIG. 18F). Next, the steel pipe pile 1 is suspended by the steel pipe pile driving machine 100 (see FIG. 18 (G)), and the attachment 107 for attaching the steel pipe pile is attached to the steel pipe pile 1, and the upper and lower steel pipe piles are interposed via the backing member 7. 1 is welded (see FIG. 18H).

  Thereafter, the upper and lower steel pipe piles 1 are rotated and penetrated to a predetermined level in the ground (see FIG. 19A). Next, the Yatco 200 is set on the pile rotating machine 105 to resume the rotation penetration of the steel pipe pile 1 (see FIGS. 19B to 19D). Next, the steel pipe pile 1 is rotated and penetrated to a predetermined depth of the ground, and the Yatco 200 is pulled out to complete the rotary penetration work of the steel pipe pile 1 (see FIGS. 19E to 19H).

  In this embodiment, as shown in FIG. 18 (F), the closing member 30 is set on the steel pipe pile 1 before being rotated and penetrated into the ground. However, the present invention is not limited to this. For example, FIG. (B) As shown in (C), before the Yatco is set, the closing member 30 may be set on the steel pipe pile 1 that is rotationally penetrated into the ground.

  Next, as shown in FIGS. 20A to 20C, the closing member 30 is removed from the steel pipe pile 1 that is rotationally inserted into the ground. Next, as shown in FIG. 20D, the pile body 2 starts to be filled with concrete 300 (or mortar) through the through holes 4a of the reinforcing plate 4. At this time, the concrete 300 (or mortar) thrown into the pile body 2 is received by the reinforcing plate 34 welded to the upper end side of the lower pile body 2 and does not leak to the outside from the pile body 2. Then, as shown to FIG.20 (E), when the filling of the concrete 300 is completed, a series of construction work of the steel pipe pile 1 will be complete | finished.

(3) Effect of Example From the above, according to the steel pipe pile 1 of this Example 9, even if it is a case where the some steel pipe pile 1 is connected to an axial direction, it is substantially the same as the steel pipe pile 1 of the said Example 7. There are effects and effects.

<Example 10>
Next, the construction method of the steel pipe pile which concerns on Example 10 is demonstrated. In addition, in the present Example 10, while attaching the same code | symbol to the structural part substantially the same as the steel pipe pile 1 of the said Example 9, and omitting detailed explanation, it is substantially the same as the construction method of the steel pipe pile 1 of the said Example 9. Detailed explanation of the action is omitted.

(1) Construction method of steel pipe pile In the construction method of steel pipe pile 1 according to the tenth embodiment, as shown in FIG. 21 (A), the steel pipe pile 1 is rotated in a state protruding from the ground surface (high rest state). The intrusion is completed. In this case, as shown in FIGS. 21B and 21C, the earth and sand around the head portion of the steel pipe pile 1 is removed, and the closing member 30 is removed from the pile body 2. Next, as shown in FIGS. 21D and 21E, a portion protruding from the ground of the steel pipe pile 1 is cut. Next, as shown in FIG. 21F, the pile body 2 starts to be filled with concrete 300 (or mortar). At this time, the concrete 300 (or mortar) thrown into the pile body 2 is received by the reinforcing plate 34 welded to the upper end side of the lower pile body 2 and does not leak to the outside from the pile body 2. Thereafter, as shown in FIG. 22 (G), when the filling of the concrete 300 is completed, a series of construction work of the steel pipe piles 1 is completed.

(3) Effect of Example From the above, according to the construction method of the steel pipe pile of the tenth embodiment, in addition to exhibiting substantially the same operations and effects as the construction method of the steel pipe pile 1 of the ninth embodiment, the steel pipe pile Even when 1 is rotated and penetrated in a state of staying high, the concrete 300 can be placed in the pile body 2 to increase the horizontal support force.

<Example 11>
Next, the construction method of the steel pipe pile which concerns on Example 11 is demonstrated. In Example 11, the same components as those of the steel pipe pile 1 of Example 9 are denoted by the same reference numerals and detailed description thereof is omitted, and the construction method of the steel pipe pile 1 of Example 9 is substantially the same. Detailed explanation of the action is omitted.

(1) Construction method of steel pipe pile In the construction method of the steel pipe pile 1 according to the eleventh embodiment, as shown in FIGS. 22 (A) to (C), from the pile main body 2 of the steel pipe pile 1 that is rotationally penetrated into the ground. The closing member 30 is removed. Next, as shown in FIG. 22 (D), the pile 300 is started to be filled with concrete 300 (or mortar) through the through holes 4a of the reinforcing plate 4. At this time, the concrete 300 (or mortar) thrown into the pile main body 2 is received by the reinforcing plate 35 welded to the lower end side in the upper pile side main body 2 and does not leak to the outside from the pile main body 2. Thereafter, as shown in FIG. 22 (E), when the filling of the concrete 300 is completed, a series of construction work of the steel pipe piles 1 is completed.

(3) Effect of Example From the above, according to the construction method of the steel pipe pile 1 of the present Example 11, substantially the same operation and effect as the construction method of the steel pipe pile 1 of the above Example 9 can be achieved.

<Example 12>
Next, the construction method of the steel pipe pile which concerns on Example 12 is demonstrated. In Example 12, the same components as those in the steel pipe pile 1 of Example 9 are denoted by the same reference numerals and detailed description thereof is omitted, and the construction method of the steel pipe pile 1 of Example 9 is substantially the same. Detailed explanation of the action is omitted.

(1) Construction method of steel pipe piles In the construction method of steel pipe piles according to the twelfth embodiment, as shown in FIG. 23 (A), the steel pipe pile 1 is rotated and penetrated in a state of protruding from the surface of the ground (high stability state). Is completed. In this case, as shown in FIGS. 23B and 23C, the earth and sand around the head portion of the steel pipe pile 1 is removed, and the closing member 30 is removed from the pile body 2. Next, as shown in FIGS. 23 (D) and 23 (E), a portion protruding from the ground of the steel pipe pile 1 is cut. Next, as shown in FIG. 23 (F), the pile body 2 starts to be filled with concrete 300 (or mortar). At this time, the concrete 300 (or mortar) thrown into the pile main body 2 is received by the reinforcing plate 35 welded to the lower end side in the upper pile side main body 2 and does not leak to the outside from the pile main body 2. Thereafter, as shown in FIG. 23 (G), when the filling of the concrete 300 is completed, a series of construction work of the steel pipe piles 1 is completed.

(3) Effect of Example From the above, according to the construction method of the steel pipe pile 1 of the present Example 12, in addition to exhibiting substantially the same operations and effects as the construction method of the steel pipe pile 1 of Example 9, the steel pipe Even when the pile 1 is rotated and penetrated in a state of staying high, the concrete 300 can be placed in the pile body 2 to increase the horizontal support force.

<Example 13>
Next, the construction method of the steel pipe pile which concerns on Example 13 is demonstrated. In Example 13, the same components as those of the steel pipe pile 1 of Example 9 are denoted by the same reference numerals and detailed description thereof is omitted, and the construction method of the steel pipe pile 1 of Example 9 is substantially the same. Detailed explanation of the action is omitted. Furthermore, in the thirteenth embodiment, the divider 5 of the first embodiment is used.

(1) Construction method of steel pipe pile In the construction method of steel pipe pile 1 according to the thirteenth embodiment, as shown in FIGS. 24 (A) to (C), in the steel pipe pile 1 rotated and penetrated into the ground, the inside of the pile body 2 Then, the closing member 30 is removed. Next, as shown in FIG. 24D, the pile body 2 is started to be filled with concrete 300 (or mortar). At this time, the concrete 300 (or mortar) thrown into the pile main body 2 is received by the disk body 10 of the partition 5 and does not leak outside from the pile main body 2. Thereafter, as shown in FIG. 24E, when the filling of the concrete 300 is completed, a series of construction work of the steel pipe piles 1 is completed.

(3) Effect of Example As described above, according to the construction method of the steel pipe pile 1 of the thirteenth embodiment, substantially the same operations and effects as the construction method of the steel pipe pile 1 of the ninth embodiment can be achieved.

<Example 14>
Next, the construction method of the steel pipe pile which concerns on Example 14 is demonstrated. In Example 14, the same components as those in the steel pipe pile 1 of Example 9 are denoted by the same reference numerals and detailed description thereof is omitted, and the construction method of the steel pipe pile 1 of Example 9 is substantially the same. Detailed explanation of the action is omitted. Furthermore, in the thirteenth embodiment, the divider 5 of the first embodiment is used.

(1) Construction method of steel pipe pile In the construction method of steel pipe pile 1 according to the fourteenth embodiment, as shown in FIG. 25 (A), the steel pipe pile 1 rotates in a state protruding from the surface of the ground (high rest state). The intrusion is completed. In this case, as shown in FIGS. 25 (B) and 25 (C), the sand around the head of the steel pipe pile 1 is removed, the closing member 30 is removed from the pile body 2, and the portion protruding from the ground of the steel pipe pile 1 is further removed. Disconnect. Next, as shown in FIG. 25 (D), in the steel pipe pile 1 that is rotated and penetrated into the ground, each reinforcing bar 11 of the partition 5 is pulled up to a predetermined height position. Then, as shown in FIG.25 (E), the upper part of each reinforcing bar 11 is cut | disconnected and it welds to the pile main body 2. FIG. At this time, the space in the pile body 2 is partitioned vertically by the disc body 10. Thereafter, as shown in FIG. 25 (F), the upper space partitioned by the disk body 10 in the pile main body 2 starts to be filled with concrete 300 (or mortar). At this time, the concrete 300 (or mortar) thrown into the pile main body 2 is received by the disk body 10 of the partition 5 and does not leak outside from the pile main body 2. Thereafter, as shown in FIG. 25 (G), when the filling of the concrete 300 is completed, a series of construction work of the steel pipe piles 1 is completed.

(3) Effect of Example From the above, according to the construction method of the steel pipe pile 1 of the present Example 14, in addition to exhibiting substantially the same operation and effect as the construction method of the steel pipe pile 1 of the Example 9, the steel pipe Even when the pile 1 is rotated and penetrated in a state of staying high, the concrete 300 can be placed in the pile body 2 to increase the horizontal support force.

The present invention is not limited to the above examples 6-14 may be an embodiment in which various modifications within the scope of the present invention depending on the purpose, application. That is, in the above Reference Examples 1 to 5 and Example 6, the steel pipe piles 1 and 15 formed by connecting a plurality of pile main bodies 2 in the axial direction are illustrated, but not limited thereto, for example, one pile main body It is good also as a steel pipe pile which consists of two. At this time, for example, when the tip expanding wing 8 is provided at the lower end portion of the pile main body 2, the restricting portion 12 may be abolished and the dividers 5 and 16 may be prevented from being detached by the tip expanding wing 8.

Moreover, in the said reference examples 1-3, although what consists of one disk body 10 was illustrated as a partition part which comprises the partition tool 5, it is not limited to this, For example, as shown in FIG. It is good also as a partition part which consists of the cylindrical body 23 which has. Further, for example, as shown in FIG. 28, a partition portion including a plurality of disc bodies 10 that are spaced apart at a predetermined interval in the axial direction may be used. Furthermore, in the said Example 1, although what consists of the some reinforcing bar 11 was illustrated as an insertion axis | shaft which comprises the partition tool 5, it is not limited to this, For example, as shown in FIG.27 and FIG.28, one piece is shown. It is good also as an insertion axis which consists of reinforcing bars 11.

  Moreover, in the said Example 6, although the form which provides the blocking member 21 in the reinforcement plate 4 of the steel pipe pile 1 was illustrated, it is not limited to this, For example, it is made to provide the blocking member 21 in the reinforcement plate 4 of the steel pipe pile 15. May be.

Further, in the above Reference Examples 1-5 and Examples 6-14, but the reinforcing plate 4 has a disk shape, not limited to this, as shown in FIG. 26, one character shape (FIG. 26 (A), ( B)) or a cross shape (FIG. 26C). In the case of a single character shape, it can be linear (Fig. 26 (A)) or curved drum shape (Fig. 26 (B)), and when one or two rotating metal fittings 3 are provided, they are attached so as to coincide with these fixing positions. In the case of a cross shape, when the rotating metal fitting 2 is 1, 2 or 4, it is attached so as to coincide with these fixing positions. In either case, since the inside of the attachment part of the rotating metal fitting 3 is reinforced, deformation of the rotation transmitting portion can be suppressed.

Furthermore, in the above Reference Examples 1 to 5 and Examples 6 to 14, the reinforcing plate 4 is provided at the center of the mounting position of the rotating metal fitting 3, but is not limited to this, for example, other than the center of the attaching part of the rotating metal fitting 3. You may make it provide inside.

Further, in the above Reference Examples 1-5 and Examples 6-14, the reinforcing plate 4 is being fixed by welding, without being limited thereto, for example, may be be fixed by adhesion or press fitting.

  Moreover, in the said Examples 7-14, although the thing formed by laminating | stacking the disk shaped elastic material 32 on the back surface side of the main body 31 was illustrated as the closing member 30, it is not limited to this, For example, FIG. ) (B) As shown in (E), a back plate 38 is laminated on the back side of the main body 31 via an intermediate plate 37, and an annular elastic material made of foam, rubber or the like between the main body and the back plate material. You may employ | adopt the closing member formed by pinching the inner peripheral side edge part of the material 39. FIG. For example, as shown in FIGS. 29C and 29D, a closing member in which an annular elastic member 40 made of foam, rubber or the like is attached to the outer peripheral side of the main body 31 may be employed. For example, as shown in FIG. 29 (F), a closing member made of a disk-shaped elastic material 41 made of foam, rubber, or the like may be employed. Further, for example, as shown in FIGS. 30A and 30B, a closing member including a bottomed cylindrical main body 42 having a locking portion 42 a locked to the upper end side of the pile main body 2 may be employed. Good. Furthermore, for example, as shown in FIGS. 30C and 30D, a closing member formed of a disk-shaped main body 43 that is welded to the upper end side of the pile main body 2 and cut after excavation may be employed.

  Widely used as a technology for reinforcing pipe piles that form the foundation of buildings.

  1, 15; Steel pipe pile, 2; Pile body, 3; Rotating metal fitting, 4; Reinforcing plate, 4a; Through hole, 5, 16; Partition, 10; Disk body, 11; Fluid supply pipes 21, 30; closing member, 32a;

Claims (9)

The pile body,
A rotating metal fitting that is fixed to the outer peripheral surface of the upper portion of the pile body and that rotates the pile body by applying an external force in the circumferential direction;
A reinforcing plate fixed to the inner peripheral surface of the upper portion of the pile body,
The reinforcing plate is formed with a through hole for placing concrete, mortar or soil cement in the pile body ,
A tube pile, wherein a closing member is detachably attached to at least one of the reinforcing plate and the pile body so as to close the through hole.   The pipe pile according to claim 1, wherein a tip enlarged wing or a reinforcing plate is fixed to a lower end side of the pile body so as to close the inside of the pile body.   The pipe pile of Claim 1 further provided with the partition which partitions the space in the said pile main body up and down.   The pipe according to claim 3, wherein the partition has a partition part that partitions the space in the pile main body up and down, and an insertion shaft that extends upward from the partition part and is inserted into the through hole of the reinforcing plate. Pile. The pipe pile as described in any one of Claims 1 thru | or 4 with which the press contact part which press- contacts to the inner peripheral surface of the said pile main body is provided in the outer peripheral side of the said closing member . A pipe pile construction method using the pipe pile according to any one of claims 1 to 5,
Rotating the pipe pile into the ground;
Placing the concrete, mortar, or soil cement in the pile main body through the through-holes of the reinforcing plate . On the lower end side of the pile main body, a tip expanding wing or a reinforcing plate is fixed so as to close the inside of the pile main body,
The step of placing is a step of placing concrete, mortar, or soil cement through the through hole of the reinforcing plate in the pile main body above the tip enlarged wing or the reinforcing plate. The pipe pile construction method described . A pipe pile structure comprising the pipe pile according to any one of claims 1 to 5,
The pipe pile is rotationally inserted into the ground,
In the pile body, concrete, mortar, or soil cement is placed through the through hole of the reinforcing plate . On the lower end side of the pile main body, a tip expanding wing or a reinforcing plate is fixed so as to close the inside of the pile main body,
The pipe pile structure according to claim 8, wherein concrete, mortar, or soil cement is placed in the pile main body above the tip expansion wing or the reinforcing plate through the through hole of the reinforcing plate .

Images