JP4906629B2 - Columnar set and its usage - Google Patents

Description

  In the present invention, the outer fitting member and the inner fitting member are provided separately at both ends, and an inward circumferential groove is formed on the inner circumferential side of the outer fitting member, and the outer circumferential side of the inner fitting member In order to connect the columnar body having an outward circumferential groove and the pair of columnar bodies engaged with each other in the longitudinal direction of the columnar body, the outer fitting member of one columnar body and the other columnar body The present invention relates to a columnar body set including a key member that is mounted across the inward circumferential groove and the outward circumferential groove in a state where the inner fitting members are fitted to each other, and a method of using the columnar body set.

  The above-mentioned columnar body set is used, for example, to embed in the ground with columnar bodies such as foundation piles for structure installation, sheet piles for earth retaining, landslide prevention piles, pillars for bridge piers, etc. The inner circumferential groove of the outer fitting member and the outer circumferential groove of the inner fitting member are formed with the same groove width, and the inner circumferential groove and the inner fitting member are fitted to each other. A pair of columnar bodies are connected to each other with the outer circumferential grooves facing each other and a key member having substantially the same width as the groove width is fitted across the inward circumferential grooves and the outer circumferential grooves. (For example, refer to Patent Document 1).

Japanese Patent No. 3158081

For this reason, when connecting the upper and lower columnar bodies, it is difficult to correct the relative connection posture, for example, due to the method of driving the columnar body into the ground with a hydraulic hammer, etc. When the columnar body is buried by connecting it up and down in a substantially vertical predetermined posture, for example, by using a construction method in which the posture of the columnar body is likely to deviate from the predetermined posture with the driving, the columnar body is driven into the ground in advance. If the posture of the columnar body (hereinafter referred to as the preceding columnar body) deviates from the predetermined posture, the subsequent columnar body connected to the preceding columnar body (hereinafter referred to as the subsequent columnar body) also follows the posture of the preceding columnar body. As a result, the entire columnar body connected up and down may be buried in a posture greatly deviating from a predetermined posture.
The present invention has been made in view of the above circumstances, and when a columnar body connected up and down by a method of driving a columnar body into the ground is buried, the preceding columnar body previously driven into the ground Even if the posture deviates from the predetermined posture, the object is to enable connection and embedment while correcting the whole columnar bodies connected to each other so that the posture is close to the predetermined posture.

  In the first characteristic configuration of the present invention, an outer fitting member and an inner fitting member are provided separately at both ends, an inward circumferential groove is formed on the inner circumferential side of the outer fitting member, and the inner fitting member A columnar body having an outward circumferential groove formed on the outer peripheral side of the fitting member, and the outer fitting member of one columnar body in order to engage and connect a pair of columnar bodies to each other in the longitudinal direction of the columnar body, A columnar body set comprising a key member mounted across the inward circumferential groove and the outward circumferential groove in a state in which the inner fitting members of the other columnar body are fitted to each other, In order to engage and connect the pair of columnar bodies to each other in the longitudinal direction of the columnar body, the outer fitting member and the inner fitting member are fitted to each other, and the inward circumferential groove and the outward circumferential groove Relative inclination of the shaft cores of the outer fitting member and the inner fitting member from the state where the key member is mounted over The outer fitting member and the inner fitting member are provided in the columnar body, and the shafts of the outer fitting member and the inner fitting member are relatively inclined with respect to each other. The posture fixing member capable of fixing the relative posture is configured to be freely attachable.

[Action and effect]
In order to engage and connect the pair of columnar bodies in the longitudinal direction of the columnar body, the outer fitting member and the inner fitting member are fitted to each other, and the key member extends over the inward circumferential groove and the outward circumferential groove. Since the columnar body is provided with an interchangeable portion that allows the relative inclination of the shaft cores of the outer fitting member and the inner fitting member from the state where the outer fitting member and the inner fitting member are mounted, the preceding columnar shape that has been driven into the ground in advance When the posture of the body deviates from the predetermined posture, the outer fitting member and the inner fitting member are fitted to each other so that the posture of the subsequent columnar body connected to the preceding columnar body is close to the predetermined posture. From the state where the key member is mounted over the inward circumferential groove and the outward circumferential groove, the shaft cores of the outer fitting member and the inner fitting member can be relatively inclined.
In addition, a posture fixing member that can fix the relative posture between the outer fitting member and the inner fitting member in a state in which the shaft cores of the outer fitting member and the inner fitting member are relatively inclined is configured to be attachable. Therefore, by attaching the posture fixing member and fixing the relative posture between the outer fitting member and the inner fitting member, the posture of the subsequent columnar body is held in a posture close to a predetermined posture, and the subsequent columnar body is changed to the preceding columnar body. Can be connected.
Therefore, when embedding columnar bodies that are connected up and down by the method of driving the columnar bodies into the ground, they are connected to each other even if the position of the preceding columnar bodies that were previously driven into the ground deviates from the predetermined posture. The entire columnar body can be connected and buried while being corrected so that the posture is close to a predetermined posture.

  The second characteristic configuration of the present invention is that the posture fixing member is configured to be freely mounted over the outer peripheral portions of the pair of columnar bodies.

[Action and effect]
Since the posture fixing member is configured to be freely mounted over the outer peripheral portions of the pair of columnar bodies, the posture fixing member can be attached to the outer fitting member and the inner fitting by a simple operation of mounting the posture fixing member over the outer peripheral portions of the pair of columnar bodies. The relative posture with the member can be fixed.

  A third characteristic configuration of the present invention is a method of using the columnar body set according to claim 1, wherein the pair of columnar bodies are engaged with each other in the longitudinal direction of the columnar body and connected to each other. After fitting the inner fitting member to each other and mounting the key member across the inward circumferential groove and the outward circumferential groove, the outer fitting member and the inner fitting member are relatively inclined. In the point of attaching the posture fixing member.

[Action and effect]
In order to connect and connect a pair of columnar bodies to each other in the longitudinal direction of the columnar body, if the posture of the preceding columnar body previously driven into the ground deviates from a predetermined posture, the columnar body is connected to the preceding columnar body. After fitting the outer fitting member and the inner fitting member to each other so that the posture of the subsequent columnar body is close to the predetermined posture and mounting the key member across the inward circumferential groove and the outward circumferential groove By attaching the posture fixing member with the outer fitting member and the inner fitting member being relatively inclined, the posture of the subsequent columnar body is maintained in a posture close to a predetermined posture, and the subsequent columnar body is connected to the preceding columnar body. be able to.
Therefore, when embedding columnar bodies that are connected up and down by the method of driving the columnar bodies into the ground, they are connected to each other even if the position of the preceding columnar bodies that were previously driven into the ground deviates from the predetermined posture. The entire columnar body can be connected and buried while being corrected so that the posture is close to a predetermined posture.

  According to a fourth characteristic configuration of the present invention, the interchangeable portion is formed between the key member and the inward circumferential groove or the outward circumferential groove, and an axial center between the outer fitting member and the inner fitting member is formed. Relatively tilting and passing through the opening formed in advance in the outer fitting member in the gap formed between the key member and the groove side surface of the inward circumferential groove or the outward circumferential groove The fixing member is fitted and attached.

[Action and effect]
The outer fitting member and the inner fitting member are fitted to each other, and the outer fitting member and the inner fitting member are relatively inclined from the state in which the key member is mounted across the inward circumferential groove and the outward circumferential groove. So that the interchangeable portion is formed between the key member and the inward circumferential groove or the outward circumferential groove, and the axial centers of the outer fitting member and the inner fitting member are relatively tilted to Since the posture fixing member is fitted and attached to the gap formed between the facing circumferential groove or the groove side surface of the outward circumferential groove through the opening formed in the outer fitting member in advance, the pair of columnar bodies are attached to each other. They can be connected to each other so as not to loosen in the longitudinal direction of the columnar body.

  A fifth characteristic configuration of the present invention is a method of using the columnar body set according to claim 2, wherein the posture fixing member is formed by relatively inclining axial axes of the outer fitting member and the inner fitting member. It exists in the point attached over the outer peripheral part of a pair of said columnar body.

[Action and effect]
Since the axial cores of the outer fitting member and the inner fitting member are relatively inclined and the posture fixing member is attached over the outer peripheral portions of the pair of columnar bodies, the posture fixing member is extended over the outer peripheral portions of the pair of columnar bodies. The relative posture between the outer fitting member and the inner fitting member can be fixed by a simple operation of attaching.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
1 and 2 show an example of a columnar body, a steel pipe pile A (A1, A2) having a cylindrical outer peripheral surface shape driven into the ground by a hydraulic hammer or the like, and a pair of steel pipe piles A1, A2 The columnar body set provided with the key member 8 with which it attaches in order to engage each other in a steel pipe pile longitudinal direction and to connect is shown.

  Each of the steel pipe piles A has an outer fitting member 2 made of cast steel and an inner fitting member 3 distributed to both ends of the steel pipe 1 and welded concentrically, and the outer fitting member 2 is positioned on the upper side. It is configured to be driven in.

  As shown in FIG. 2, the inner fitting member 3 is formed by extending an inner fitting portion 5 having an outer diameter smaller than that of the base portion 4 to a base portion 4 having an outer diameter substantially the same as the outer diameter of the steel pipe 1. An end surface 6 that is formed in a substantially cylindrical shape and faces the inner fitting portion 5 side of the base portion 4 is formed on an inner fitting side abutting surface that contacts the distal end portion of the outer fitting member 2, and the inner fitting side abutting surface thereof 6, the inner fitting side engaging recess 7 is formed in an annular shape, and on the outer peripheral side of the inner fitting portion 5, two outward circumferential grooves 9 for mounting an arc-shaped split key member 8 to be described later are formed in an annular shape. The inner fitting side engaging convex portion 10 is formed in an annular shape at the distal end portion of the inner fitting portion 5.

  As shown in FIG. 2, the outer fitting member 2 is formed in a substantially cylindrical shape having an outer diameter substantially the same as the outer diameter of the steel pipe 1, and an outer fitting for fitting the inner fitting portion 5 on the inner peripheral side thereof. The outer fitting side engaging convex portion 13 that engages with the inner fitting side engaging concave portion 7 is formed in an annular shape at the tip portion that forms the portion 11 and makes contact with the inner fitting side contacting surface 6. An outer fitting side engaging concave portion 15 for engaging the inner fitting side engaging convex portion 10 is formed on the outer fitting side abutting surface 14 for contacting the front end portion of 5.

  In the outer fitting portion 11, two inward circumferential grooves 16 having a depth deeper than that of the outer circumferential groove 9, with the inner fitting portion 5 fitted to the outer fitting portion 11, the outward circumferential groove thereof. 9, each inward circumferential groove 16 has a plurality of split key members 8 arranged in the circumferential direction from the inward circumferential groove 16 as shown in FIG. It is housed so as not to protrude.

  Each of the split key members 8 is retracted as a whole as shown in FIG. 3 (a) by rotating the bolt 17 from the outside of the outer fitting member 2 with a wrench or the like, as shown in FIG. As shown in FIG. 3B, the position is provided so as to be movable and movable between a part protruding from the inward circumferential groove 16 and entering the outer circumferential groove 9.

  As shown in FIGS. 1 and 3, the outer fitting member 2 has a circumferential direction in which the inner fitting portion 5 can be exposed to the outside in a state where the outer fitting member 2 and the inner fitting member 3 are fitted to each other. The four openings 18 are formed in advance in a shape obtained by cutting out the forming portion of the inward circumferential groove 16 into a substantially rectangular shape.

  A cover member 19, which can be opened and closed, is detachably fixed to the opening 18 with a screw 12. An inward circumferential groove portion is formed in the cover member 19 to fix the cover member 19. By doing so, the inward circumferential groove 16 is configured to be continuous in a series of rings.

  And a pair of steel pipe piles A (A1, A2) are fitted into the outer fitting member 2 of one steel pipe pile A1 and the inner fitting member 3 of the other steel pipe pile A2 as shown in FIG. 4 (b), each split key member 8 is moved to the protruding position and mounted so as to straddle the inward circumferential groove 16 and the outward circumferential groove 9 as shown in FIG. Thus, the outer fitting member 2 and the inner fitting member 3 are configured to be connected to each other in the longitudinal direction of the steel pipe pile.

  Next, when the steel pipe pile A connected to each other in the vertical direction is buried in the ground by a method of driving into the ground with a hydraulic hammer or the like, as shown in FIGS. When the posture of the steel pipe pile A1 is deviated from the predetermined posture indicated by the phantom line (the posture in which the axis X1 is along the vertical direction), the steel pipe pile (columnar body) that connects the subsequent steel pipe pile A2 to the preceding steel pipe pile A1 The connection method will be explained.

  When the posture of the preceding steel pipe pile A1 that has been driven in advance deviates from the predetermined posture, as shown in FIGS. 5 to 7, the posture correcting steel pipe pile A3 provided in the columnar body set according to the present invention is followed. The steel pipe pile A2 is connected to the preceding steel pipe pile A1.

  In the columnar body set according to the present invention, the outer fitting member 2 and the inner fitting member 3 are fitted to each other in order to connect and connect the pair of steel pipe piles A (A1, A2) to each other in the longitudinal direction of the steel pipe pile. The relative positions of the axial centers X1 and X2 of the outer fitting member 2 and the inner fitting member 3 from the state where the split key member 8 is mounted across the inward circumferential groove 16 and the outward circumferential groove 9. The fitting portion 21 that allows the inclination is provided in the posture correcting steel pipe pile A3, and the outer fitting in the state where the axial cores X1, X2 of the outer fitting member 2 and the inner fitting member 3 are relatively inclined. This is different from the above-described normal columnar body set in that the posture fixing member 22 capable of fixing the relative posture between the member 2 and the inner fitting member 3 is freely attachable.

  That is, the outer fitting member 2 and the inner fitting member 3 are fitted to each other in the engaging portion 20 that engages the outer fitting member 2 and the inner fitting member 3 with each other in the longitudinal direction of the steel pipe pile via the split key member 8. The steel pipe pile A3 for posture correction in which the accommodation part 21 which permits the relative inclination of those axial cores X1, X2 from the combined state is provided in advance is connected.

The accommodating portion 21 is formed such that the groove width H1 of each outward circumferential groove 9 formed in the inner fitting member 3 is wider than the groove width H2 of the inward circumferential groove 16 formed in the outer fitting member 2. Then, the upper groove side surface 9 a of the outward circumferential groove 9 and the upper groove side surface 16 a of the inward circumferential groove 16 are substantially the same in a state where the outer fitting member 2 and the inner fitting member 3 are fitted concentrically. Provided to be at the height position, the outer diameter of the inner fitting portion 5 is formed smaller than the steel pipe piles A1 and A2 of the normal structure, and is mounted across the inward circumferential groove 16 and the outer circumferential groove 9 The divided key member 8 and the outward circumferential groove 9 can be formed.
In addition, the other structure of the steel pipe pile A3 for posture correction is provided with the same structure as the steel pipe piles A1 and A2 of the normal structure.

  And when connecting the steel pipe pile A3 for attitude correction to the preceding steel pipe pile A1, as shown in FIG. 5, the inner fitting member 3 of the steel pipe pile A3 for attitude correction is concentric with the outer fitting member 2 of the preceding steel pipe pile A1. As shown in FIG. 6, each split key member 8 is moved to the protruding position so as to straddle the inward circumferential groove 16 and the outward circumferential groove 9. Installing.

  Next, as shown in FIG. 7, the axial cores X <b> 1 and X <b> 2 of the outer fitting member 2 and the inner fitting member 3 are relatively inclined so that the posture correcting steel pipe pile A <b> 3 has a posture close to a predetermined posture. As shown in FIG. 3 (b), each opening 18 of the preceding steel pipe pile A1 is inserted into the gap 25 formed between each split key member 8 and the groove side surface of the outward circumferential groove 9 by placing the posture fixing member 22 in the gap. Install through.

  The posture fixing member 22 is a metal plate material such as a shim that is fitted into a gap formed between the split key member 8 and the groove side surface of the outward circumferential groove 9. By attaching the metal plate material 22, the posture fixing member 22 is attached. After the outer fitting member 2 and the inner fitting member 3 are engaged with each other in the longitudinal direction of the columnar body via the split key member 8 and the posture fixing member 22, the opening 18 is closed with the cover member 19, The posture correcting steel pipe pile A3 is connected to the preceding steel pipe pile A1.

  The interchangeable portion 21 has a groove width H1 of the outward circumferential groove 9 so that the allowable inclination angle of the axis X2 of the posture correcting steel pipe pile A3 with respect to the axis X1 of the preceding steel pipe pile A1 becomes a desired maximum inclination angle. The outer diameter of the inner fitting portion 5 is set, and various posture fixing members 22 having different thicknesses according to the inclination angles of the axis X1, X2 of the preceding steel pipe pile A1 and the posture correcting steel pipe pile A3 are provided. The optimal posture fixing member 22 can be selected and attached in advance.

In the present embodiment, a plurality of posture fixing members 22 are fitted into the gaps 25 through one opening 18 so that the posture fixing members 22 can be mounted through the small openings 18 in which the strength of the outer fitting member 2 is unlikely to decrease. Although the embodiment is shown, a single posture fixing member 22 may be fitted into the gap 25 and attached through one opening 18.
In this case, even if a single posture fixing member 22 having a length substantially the same as the length of the split key member 8 is fitted in the gap 25 and attached, the single key is shorter than the length of the split key member 8. The posture fixing member 22 may be fitted in the gap 25 and attached.

[Second Embodiment]
8 and 9 show another embodiment of a normal columnar body set and a columnar body set according to the present invention. In this embodiment, the steel pipe piles A1 and A2 having a normal structure and the steel pipe pile A3 for posture correction are externally fitted. The member 2 is provided with a steel pipe pile different from the steel pipe pile A shown in the first embodiment in that the opening 18 is not formed, and the posture fixing member 22 extends over the outer periphery of the steel pipe pile A1 and the posture correcting steel pipe pile A3. And can be mounted freely.

  And, when connecting the steel pipe pile A3 for posture correction to the preceding steel pipe pile A1, similarly to the first embodiment shown in FIGS. 5 and 6, the steel pipe pile for posture correction is attached to the external fitting member 2 of the preceding steel pipe pile A1. In a state where the inner fitting member 3 of A3 is fitted, each split key member 8 is moved to the protruding position and is mounted so as to straddle the inward circumferential groove 16 and the outer circumferential groove 9.

  Next, as shown in FIG. 8, until the outer fitting member 2 and the inner fitting member 3 are engaged with each other in the longitudinal direction of the columnar body, that is, any one of the divided key members 8 is above the outward circumferential groove 9. Axes X1 and X2 of the outer fitting member 2 and the inner fitting member 3 until they are in contact with the side surface of the side groove and any of the remaining divided key members 8 are in contact with the side surface of the lower groove of the outward circumferential groove 9. As shown in FIG. 9, the posture fixing member 22 made of a plate material is attached to the outer peripheral portions of the steel pipe pile A1 and the posture correcting steel pipe pile A3 in a state where the two are forcibly inclined relative to each other. By fixing the steel pipe pile A3, the relative posture between the outer fitting member 2 and the inner fitting member 3 is fixed, and the posture correcting steel pipe pile A3 is connected to the preceding steel pipe pile A1 in a state of being engaged with each other in the longitudinal direction of the steel pipe pile. .

  The posture fixing member 22 is inserted into a recess 23 formed so as to face each other in the longitudinal direction of the steel pipe pile in each of the outer fitting member 2 and the base portion 4 of the inner fitting member 3, and the inner fitting member 2 and the inner fitting member 2 are It is fixed over the fitting member 3.

  In the above embodiment, the axial cores X1 and X2 of the outer fitting member 2 and the inner fitting member 3 are forcibly inclined to the maximum allowable inclination angle θ, and the posture correcting steel pipe pile A3 is steel pipe to the preceding steel pipe pile A1. Although the connection form is shown in a state where they are engaged with each other in the pile longitudinal direction, the relative posture between the outer fitting member 2 and the inner fitting member 3 may be fixed by being inclined to be less than the maximum allowable inclination angle θ.

In this case, as the posture fixing member 22, various posture fixing members 22 having different upper and lower screw hole intervals L depending on the inclination angles between the axial cores X1 and X2 of the preceding steel pipe pile A1 and the posture correcting steel pipe pile A3. In preparation, the posture fixing member 22 having the optimum screw hole interval L can be selected and attached.
In addition, after the posture fixing member 22 is fixed, the split key member 8 may contact the side surface of the outward circumferential groove 9.
Other configurations are the same as those of the first embodiment.

[Third Embodiment]
FIGS. 10 and 11 show a steel pipe pile A (A1, A2) having a cylindrical outer peripheral surface shape that is driven into the ground with a hydraulic hammer or the like as an example of a columnar body, and a pair of steel pipe piles A1, A2. The columnar body set provided with the key member 8 with which it attaches in order to engage each other in a steel pipe pile longitudinal direction and to connect is shown.

  Each of the steel pipe piles A has an outer fitting member 2 made of cast steel and an inner fitting member 3 distributed to both ends of the steel pipe 1 and welded concentrically, and the inner fitting member 3 is positioned on the upper side. It is configured to be driven in.

  As shown in FIG. 11, the inner fitting member 3 has an inner fitting portion 5 having an outer diameter smaller than that of the base portion 4 extending from a base portion 4 having an outer diameter substantially the same as the outer diameter of the steel pipe 1. An end surface 6 that is formed in a substantially cylindrical shape and faces the inner fitting portion 5 side of the base portion 4 is formed on an inner fitting side abutting surface that contacts the distal end portion of the outer fitting member 2, and the inner fitting side abutting surface thereof 6, an inner fitting side engaging recess 7 is formed in an annular shape, and two outer circumferential grooves 9 are formed in an annular shape on the outer peripheral side of the inner fitting portion 5. The inner fitting side engaging convex portion 10 is formed in an annular shape.

  As shown in FIG. 11, the outer fitting member 2 is formed in a substantially cylindrical shape having an outer diameter substantially the same as the outer diameter of the steel pipe 1, and an outer fitting for fitting the inner fitting portion 5 on the inner peripheral side thereof. The inner fitting side engaging recess 7 is formed at the tip portion that forms the portion 11, forms two inward circumferential grooves 16 having substantially the same depth as the outer circumferential groove 9, and makes contact with the inner fitting side contact surface 6. The outer fitting side engaging convex portion 13 that engages with the outer fitting side engagement convex portion 10 is formed in an annular shape, and the outer fitting side engaging convex portion 10 is engaged with the outer fitting side engaging convex portion 10 that contacts the distal end portion of the inner fitting portion 5. A fitting side engaging recess 15 is formed.

  The inward circumferential groove 16 is formed in an annular shape so as to face the outward circumferential groove 9 in a state in which the inner fitting portion 5 is fitted to the outer fitting portion 11, and connects a pair of steel pipe piles A. In order to do this, in the state where the outer fitting member 2 of one steel pipe pile A and the inner fitting member 3 of the other steel pipe pile A are fitted to each other, the inner circumferential groove 16 and the outer circumferential groove 9 are spanned. By attaching the key member 8, the outer fitting member 2 and the inner fitting member 3 can be engaged with each other in the longitudinal direction of the steel pipe pile.

  As shown in FIG. 13, the key member 8 is composed of a plurality of substantially rectangular parallelepiped divided key members in the pile circumferential direction, and the outer fitting member 2 and the inner fitting member 3 are fitted together. Thus, in order to push these split key members 8 between the inward circumferential grooves 16 and the outward circumferential grooves 9, as shown in FIG. 10 and FIG. A shape in which an opening 26 for facing a portion outwardly over the entire width of the outward circumferential groove 9 is cut out over the entire width of the inward circumferential groove 16 along the position where each inward circumferential groove 16 is formed. Thus, the outer fitting member 2 is preliminarily formed at a plurality of locations (four locations in the present embodiment) in the circumferential direction.

  Then, as shown in FIG. 12 (a), after the outer fitting member 2 of the other steel pipe pile A2 is externally fitted to the inner fitting member 3 of one steel pipe pile A1, they are fitted to each other, and then FIG. As shown in FIG. 2, each of the plurality of split key members 8 is exposed outwardly through the opening 26 between the inward circumferential groove 16 and the outward circumferential groove 9 between the adjacent openings 26. The inner circumferential groove 16 and the outer circumferential groove 16 are attached to the outer circumferential groove portion 9a and pushed between the inner circumferential groove 16 and the outer circumferential groove 9 along the outer circumferential groove portion 9a. A pair of steel pipe piles A (A1, A2) can be connected by a connection method in which the outer fitting member 2 and the inner fitting member 3 are engaged with each other in the longitudinal direction of the pile. It is configured.

  In addition, the code | symbol 27 in FIG. 10 is a screw | thread so that it may engage over the outer fitting member 2 and the inner fitting member 3 in order to suppress the relative rotation of the steel pipe pile A (A1, A2) connected mutually. This is a rotation suppression key that has been stopped.

  As shown in FIG. 13, the plurality of split key members 8 to be mounted between the adjacent openings 26 in the pile circumferential direction are formed with wire insertion through holes 28 in each split key member 8. A wire 29 as a series of cable bodies is inserted in advance over the divided key member 8.

  The wire 29 is a first key that regulates relative movement with the split key member 8 by contact with the split key member 8a on the front end side in the pushing direction of the split key member 8 inserted through the wire 29. A regulating member 30a and a second regulating member 30b that regulates relative movement between the regulating key 30b and the divided key member 8b on the rear end side in the pushing direction are provided. 2 The distance from the regulating member 30b is set to a length equal to or greater than the total length of each divided key member 8, for example, twice or more, so that each divided key member 8 has an inward circumferential groove 16 and an outer circumferential length. A posture that can be pushed between the groove 9 and a groove 9 can be freely changed.

A method of mounting each of the divided key members 8 over the inward circumferential groove 16 and the outward circumferential groove 9 will be described.
As shown in FIG. 14 (a), the end of the wire 29 is inserted between the inward circumferential groove 16 and the outward circumferential groove 9 from one opening 26 between the adjacent openings 26. 14B, after each of the split key members 8 through which the wire 29 has been inserted, between the inward circumferential groove 16 and the outward circumferential groove 9, as shown in FIG. Are inserted in order across the inward circumferential groove 16 and the outward circumferential groove 9, and then the wire 29 is cut and pulled out from each split key member 8 as shown in FIG.

  Next, as shown in FIG. 15, an L-shaped slide key member 31 for preventing the movement of each divided key member 8 in the circumferential groove is provided with an inward circumferential groove 16 and an outward circumferential groove from the opening 26. 9, and a presser key member 32 is mounted between the adjacent slide key members 31, and a connecting plate 33 for connecting and fixing the slide key members 31 is screwed to each slide key member 31.

  According to the present embodiment, it is necessary to perform a troublesome operation such as attaching the divided key members 8 one by one to the outward circumferential groove portion 8a facing outward and then bolting the divided key members 8 to the preceding divided key member. If any of the split key members 8 is caught between the inward circumferential groove 16 and the outer circumferential groove 9 and cannot be pushed in, the wire 29 pulled out from the opening 26 is removed to eliminate the catch. By moving up, down, left and right, it is easy to eliminate the hooking of the split key member 8 at the play (gap) portion between the split key member 8 and the inward circumferential groove 16 or the outward circumferential groove 9.

  Further, as the wire 29, a wire 29 provided with restriction members 30 a and 30 b for restricting relative movement with the divided key member 8 in contact with the divided key member 8 inserted through the wire 29 is used. Therefore, by moving the wire 29 in at least one of the front and rear directions, all or part of the split key member 8 inserted through the wire 29 can be positively moved. Easier to solve.

  Next, when the steel pipe piles A connected to each other in the vertical direction are buried in the ground by a method of driving into the ground with a hydraulic hammer or the like, as shown in FIGS. When the posture of the steel pipe pile A1 is deviated from the predetermined posture indicated by the phantom line (the posture in which the axis X1 is along the vertical direction), the steel pipe pile (columnar body) that connects the subsequent steel pipe pile A2 to the preceding steel pipe pile A1 The connection method will be explained.

  When the posture of the preceding steel pipe pile A1 driven in advance deviates from the predetermined posture, as shown in FIGS. 16 to 18, the steel tube pile A3 for posture correction provided for the columnar body set according to the present invention is followed. The steel pipe pile A2 is connected to the preceding steel pipe pile A1.

  In the columnar body set according to the present invention, the outer fitting member 2 and the inner fitting member 3 are fitted to each other in order to connect and connect the pair of steel pipe piles A (A1, A2) to each other in the longitudinal direction of the steel pipe pile. The relative positions of the axial centers X1 and X2 of the outer fitting member 2 and the inner fitting member 3 from the state where the split key member 8 is mounted across the inward circumferential groove 16 and the outward circumferential groove 9. The fitting portion 21 that allows the inclination is provided in the posture correcting steel pipe pile A3, and the outer fitting in the state where the axial cores X1, X2 of the outer fitting member 2 and the inner fitting member 3 are relatively inclined. This is different from the above-described normal columnar body set in that the posture fixing member 22 capable of fixing the relative posture between the member 2 and the inner fitting member 3 is freely attachable.

  That is, the outer fitting member 2 and the inner fitting member 3 are fitted to each other in the engaging portion 20 that engages the outer fitting member 2 and the inner fitting member 3 with each other in the longitudinal direction of the steel pipe pile via the split key member 8. The steel pipe pile A3 for posture correction in which the accommodation part 21 which permits the relative inclination of those axial cores X1, X2 from the combined state is provided in advance is connected.

The accommodating portion 21 is formed such that the groove width H2 of the inward circumferential groove 16 formed in the outer fitting member 2 is wider than the groove width H1 of each outward circumferential groove 9 formed in the inner fitting member 3. Then, the upper groove side surface 9 a of the outward circumferential groove 9 and the upper groove side surface 16 a of the inward circumferential groove 16 are substantially the same in a state where the outer fitting member 2 and the inner fitting member 3 are fitted concentrically. The outer fitting member 2 is formed so as to have a height, and the inner diameter of the outer fitting member 2 is larger than that of the steel pipe piles A1 and A2 of the normal structure, and is mounted across the inward circumferential groove 16 and the outer circumferential groove 9 The split key member 8 and the inward circumferential groove 16 can be formed.
In addition, the other structure of the steel pipe pile A3 for posture correction is provided with the same structure as the steel pipe piles A1 and A2 of the normal structure.

  And when connecting the steel pipe pile A3 for posture correction to the preceding steel pipe pile A1, as shown in FIG. 16, the outer fitting member 2 of the steel pipe pile A3 for posture correction is concentric with the inner fitting member 3 of the preceding steel pipe pile A1. In the state where the steel pipe piles A (A1, A2) of the normal structure are fitted to each other in a state where they are externally fitted to each other, each of the plurality of split key members 8 is exposed to the outside through the opening 26. The inner circumferential groove portion 9a is attached to the inner circumferential groove portion 9a and pushed between the inner circumferential groove 16 and the outer circumferential groove 9 along the outer circumferential groove portion 9a, as shown in FIG. 16 and the outward circumferential groove 9 are mounted so as to straddle.

Next, as shown in FIG. 18, the axial cores X <b> 1 and X <b> 2 of the outer fitting member 2 and the inner fitting member 3 are relatively inclined so that the posture correcting steel pipe pile A <b> 3 has a posture close to a predetermined posture. , The posture fixing member 22 made of a metal plate is inserted into the gap 25 formed between each divided key member 8 and the groove side surface of the inward circumferential groove 16 as shown in FIG. After attaching through the opening 26, the outer fitting member 2 and the inner fitting member 3 are engaged with each other in the longitudinal direction of the columnar body via the split key member 8 and the posture fixing member 22, and then a steel pipe pile having a normal structure Similarly to A (A1, A2), the slide key member 31 and the presser key member 32 are mounted, and the connecting plate 33 is screwed to each slide key member 31.
Other configurations are the same as those of the first embodiment.

[Other Embodiments]
1. The columnar body set according to the present invention may be used for connecting columnar bodies such as a steel pipe sheet pile for earth retaining, a landslide prevention pile, and a pier column in addition to a foundation pile for installing a structure.
2. In the columnar body set according to the present invention, the interchangeable portion is formed between the key member and the inward circumferential groove, the axial centers of the outer fitting member and the inner fitting member are relatively inclined, and the key member and the inward circumferential periphery are formed. You may comprise so that a posture fixing member can be inserted and attached to the clearance gap formed between the groove | channels through the opening part previously formed in the external fitting member.

Perspective view of columnar body set Longitudinal section of the main part Cross section of the main part Longitudinal section of the main part Explanatory drawing of the columnar object set by this invention and its usage Explanatory drawing of the columnar object set by this invention and its usage Explanatory drawing of the columnar object set by this invention and its usage Explanatory drawing of the columnar object set of 2nd Embodiment and its usage Explanatory drawing of the columnar object set of 2nd Embodiment and its usage The perspective view of the columnar object set of 3rd Embodiment Longitudinal sectional view of the main part of the third embodiment Main part longitudinal cross-sectional view of 3rd Embodiment The perspective view of the principal part of 3rd Embodiment The principal part cross-sectional view of the columnar body set of 3rd Embodiment Cross-sectional view of the main part of the third embodiment Explanatory drawing of columnar object set of 3rd Embodiment and its usage Explanatory drawing of columnar object set of 3rd Embodiment and its usage Explanatory drawing of columnar object set of 3rd Embodiment and its usage Explanatory drawing of the usage method of the columnar object set of 3rd Embodiment

Explanation of symbols

2 external fitting member 3 internal fitting member 8 key member 9 outward circumferential groove 16 inward circumferential groove 18 opening 21 interchangeable portion 22 posture fixing member 25 gap A columnar body A1 one columnar body A2 other columnar body X1 axis X2 Shaft core

Claims (5)

An outer fitting member and an inner fitting member are provided separately at both ends, an inward circumferential groove is formed on the inner circumferential side of the outer fitting member, and the outer circumferential side of the inner fitting member is outward. A columnar body having a circumferential groove;
In order to engage and connect a pair of columnar bodies to each other in the longitudinal direction of the columnar bodies, the outer fitting member of one columnar body and the inner fitting member of the other columnar body are fitted to each other, A columnar body set comprising a key member mounted across the inward circumferential groove and the outward circumferential groove,
In order to engage and connect the pair of columnar bodies to each other in the longitudinal direction of the columnar body, the outer fitting member and the inner fitting member are fitted to each other, and the inward circumferential groove and the outward circumferential groove The columnar body is provided with a flexible portion that allows a relative inclination of the shaft cores of the outer fitting member and the inner fitting member from the state where the key member is mounted over the
A posture fixing member capable of fixing a relative posture between the outer fitting member and the inner fitting member in a state where the shaft cores of the outer fitting member and the inner fitting member are relatively inclined is configured to be attachable. Columnar body set.   The columnar body set according to claim 1, wherein the posture fixing member is configured so as to be freely attached over an outer peripheral portion of the pair of columnar bodies. A method of using the columnar body set according to claim 1 or 2,
In order to engage and connect the pair of columnar bodies to each other in the longitudinal direction of the columnar body, the outer fitting member and the inner fitting member are fitted to each other, and the inward circumferential groove and the outward circumferential groove A method of using a columnar body set to which the posture fixing member is attached by relatively tilting the outer fitting member and the inner fitting member after mounting the key member over the entire length.   The key member is formed between the key member and the inward circumferential groove or the outward circumferential groove, and the axial cores of the outer fitting member and the inner fitting member are relatively inclined. The posture fixing member is fitted and attached to the gap formed between the inner circumferential groove and the groove side surface of the outer circumferential groove through an opening formed in advance in the outer fitting member. 3. A method of using the columnar body set according to 3. A method of using the columnar body set according to claim 2,
A method of using a columnar body set in which the axial cores of the outer fitting member and the inner fitting member are relatively inclined and the posture fixing member is attached over the outer peripheral portions of the pair of columnar bodies.

Images