JP2016065392A - Rotation suppression structure of pile joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotation suppression structure of a pile joint capable of surely suppressing a necessary value of more of relative rotation between a first pile and a second pile, by avoiding shear force in acting on a connection pin from a key member, and avoiding torque in locally acting on the key member.SOLUTION: A rotation suppression structure comprises a key groove part 2 continuously formed on a side surface of an upper end part 6a of a first pile 6 and a side surface of a lower end part 7a of a second pile 7, and a key member 5 fitted in the key groove party 2, in a state of linking the upper end part 6a of the first pile 6 and the lower end part 7a of the second pile 7, and the key groove part 2 comprises a first groove 3 and a second groove 4, and the first groove 3 and the second groove 4 comprise contact point parts 31, 35, 41 and 45 for rotating the key member 5 while contacting with one point of side edges 51 and 52 of the key member 5 by predetermined relative rotation between the first pile 6 and the second pile 7 and contact side parts 32, 33, 36, 37, 42, 43, 46 and 47 for contacting the side edges 51 and 52 of the key member 5 in the predetermined length.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a rotation suppression structure of a pile joint for suppressing the relative rotation of these piles more than necessary in a state where the end of one pile is connected to the end of one pile.

  Conventionally, it is disclosed in Patent Document 1 and Patent Document 2 for the purpose of suppressing the relative rotation of these piles in a state where the end of one steel pipe pile is connected to the end of one steel pipe pile. Such a connection structure of steel pipe piles has been proposed.

  The connection structure of the steel pipe pile disclosed in Patent Document 1 is such that the female cylinder is attached to the lower steel pipe pile, the male cylinder is attached to the upper steel pipe pile, and the male cylinder is inserted into the female cylinder. The steel pipe pile and the upper steel pipe pile are connected. At this time, the connection structure of the steel pipe pile disclosed in Patent Document 1 is such that the key groove forming portion of the male cylinder and the key groove forming portion of the female cylinder coincide with the axial direction of the steel pipe pile. By fitting the key member into the groove forming portion, relative rotation between the lower steel pipe pile and the upper steel pipe pile is suppressed. Moreover, the connection structure of the steel pipe pile disclosed by patent document 1 prevents the key member from dropping by the bolt attached to the tap hole of the key groove forming portion and the bolt hole of the key member.

  The connection structure of the steel pipe pile disclosed in Patent Document 2 is such that the plug member is attached to the lower pile, the socket member is attached to the upper pile, and the connecting portion of the plug member is inserted into the insertion portion of the socket member. It connects the pile and the upper pile. At this time, the connection structure of the steel pipe pile disclosed in Patent Document 2 is such that the key hole of the plug member matches the key hole of the socket member, and the lower pile is inserted by inserting the key into these key holes. And relative rotation with the upper pile will be suppressed. Moreover, the connection structure of the steel pipe pile disclosed by patent document 2 is that the fall of a key is prevented by the volt | bolt attached to the screw hole of the locking member attached to the plug member, and the through-hole of a key. Become.

Japanese Patent Laying-Open No. 2004-92291 (page 7, FIG. 9) Japanese Patent Laying-Open No. 2006-37619 (page 7, FIG. 2)

  However, the connection structure of the steel pipe pile disclosed in Patent Document 1 is, as shown in FIG. 22, when the lower steel pipe pile 90 and the upper steel pipe pile 91 perform a predetermined relative rotation, the key groove forming portion. The key member 93 rotates with the bolt 99 attached to the tap hole 92 and the bolt hole of the key member 93 as the rotation axis. At this time, the connection structure of the steel pipe pile disclosed in Patent Document 1 causes a shearing force to act on the bolt 99 from the key member 93 to break the bolt 99, and the key groove forming portion 92 is broken by the breakage of the bolt 99. Therefore, there is a problem that the key member 93 falls off and the relative rotation between the lower steel pipe pile 90 and the upper steel pipe pile 91 cannot be suppressed.

  Moreover, the connection structure of the steel pipe pile disclosed by patent document 1 rotates the key member 93 when the lower steel pipe pile 90 and the upper steel pipe pile 91 carry out predetermined relative rotation, and the key groove formation part 92 is carried out. The side sides 92a and the upper and lower sides 92b of the key member 93 are in point contact with the side sides 93a and the corners 93b of the key member 93. At this time, in the articulated structure of steel pipe piles disclosed in Patent Document 1, rotational torque due to relative rotation between the lower steel pipe pile 90 and the upper steel pipe pile 91 is locally transmitted to the key member 93. The key member 93 is deformed or broken by the rotational force acting locally, and there is a problem that the relative rotation between the lower steel pipe pile 90 and the upper steel pipe pile 91 cannot be suppressed.

  As shown in FIG. 23, the connection structure of steel pipe piles disclosed in Patent Document 2 includes a screw hole of a locking member of the socket member 97 when the lower pile 94 and the upper pile 95 perform a predetermined relative rotation. The key 98 rotates with the bolt 99 attached to the through hole of the key 98 as a rotation axis. At this time, the connection structure of steel pipe piles disclosed in Patent Document 2 causes shearing force to act on the bolt 99 from the key 98 and the bolt 99 breaks. There was a problem that it would fall off and the relative rotation between the lower pile 94 and the upper pile 95 could not be suppressed.

  Further, in the steel pipe pile connection structure disclosed in Patent Document 2, in order to efficiently insert the key 98 into the key hole 96, the distance between the side 96a of the key hole 96 and the side 98a of the key 98 is predetermined. In general, the key hole 96 is formed so as to have the size of the key 98, and the key 98 is rotated by the relative rotation of the lower pile 94 and the upper pile 95, and the side 96a of the key hole 96 is rotated. And the inflection portion 98b of the key 98 are in point contact. At this time, the connection structure of the steel pipe piles disclosed in Patent Document 2 is such that the rotational torque due to the relative rotation between the lower pile 94 and the upper pile 95 is locally transmitted to the key 98 and acts locally. There is a problem that the key 98 is deformed and broken by the rotational force, and the relative rotation between the lower pile 94 and the upper pile 95 cannot be suppressed.

  Therefore, the present invention has been devised in view of the above-described problems, and an object of the present invention is to avoid a shearing force from acting on the connecting pin from the key member, and the rotational force is the key member. It is providing the rotation inhibitory structure of the pile joint which can avoid the local action to a local and can suppress the relative rotation more than necessary of a 1st pile and a 2nd pile reliably.

  The pile joint rotation-inhibiting structure according to the first aspect of the present invention is a pile joint rotation-inhibiting structure that inhibits relative rotation of these piles in a state where the end of one pile is connected to the end of one pile. In the state where the end portion of the first pile and the end portion of the second pile are connected, the key groove portion formed continuously on the side surface of the end portion of the first pile and the side surface of the end portion of the second pile. And a key member fitted into the key groove portion across the side surface of the end portion of the first pile and the side surface of the end portion of the second pile, and the key groove portion is a side surface of the end portion of the first pile. Having a first groove formed by cutting out the end face facing the second pile, and a second groove formed by cutting out the end face facing the first pile at the side surface of the end of the second pile; Either one or both of the first groove and the second groove is configured so that the key member is brought into contact with a point on the side of the key member by a predetermined relative rotation between the first pile and the second pile. A contact point unit for rolling, the sides of the key member and having a contact edge portion that contacts a predetermined length.

  In the pile joint rotation restraining structure according to the second invention, in the first invention, the first groove is brought into contact with a point on the side of the key member by a predetermined relative rotation between the first pile and the second pile. The first contact point portion for rotating the key member while the second contact point portion provided at a portion facing the first contact point portion in the circumferential direction of the first pile, and the first contact point portion A first contact side provided to be inclined with respect to the axial direction of one pile, and a portion facing the first contact side in the circumferential direction of the first pile from the second contact point to the first A second contact side provided to be inclined with respect to the axial direction of the pile, and the first contact side and the second contact side are the first contact point and the second contact. It is provided so that it may mutually space apart from a point part toward the axial center direction of a 1st pile.

  The rotation suppression structure for a pile joint according to a third aspect is the first aspect, wherein the first contact side is provided on the outer side in the axial direction of the first pile from the first contact point. And having either one or both of the first inner contact side provided on the inner side in the axial direction of the first pile from the first contact point, and the second contact side is the second contact point. A second outer contact side provided substantially parallel to the first inner contact side on the outer side in the axial direction of the first pile, and an inner side in the axial direction of the first pile from the second contact point. It has any one or both of the 2nd inner side contact edge part provided substantially parallel to the 1st outer side contact edge part, It is characterized by the above-mentioned.

  According to a fourth aspect of the present invention, there is provided the rotation preventing structure for a pile joint according to the third aspect, wherein the second groove contacts one point on the side of the key member by a predetermined relative rotation between the first pile and the second pile. A third contact point portion for rotating the key member, a fourth contact point portion provided at a portion facing the third contact point portion in the circumferential direction of the second pile, and a third contact point portion from the third contact point portion. The second contact point from the fourth contact point to the third contact side provided to be inclined with respect to the axial direction of the two piles and the portion facing the third contact side in the circumferential direction of the second pile. A fourth contact side provided to be inclined with respect to the axial direction of the pile, and the third contact side is located on the inner side in the axial direction of the second pile from the third contact point. A third inner contact side provided substantially parallel to the inner contact side, and the first outer contact on the outer side in the axial direction of the second pile from the third contact point. One or both of the third outer contact side portions provided substantially parallel to the side portion, and the fourth contact side portion is the inner side in the axial direction of the second pile from the fourth contact point portion. A second inner contact side provided substantially parallel to the second inner contact side, and a second inner contact side provided substantially parallel to the second outer contact side on the outer side in the axial direction of the second pile from the fourth contact point. It has any one or both of 4 outer side contact sides, It is characterized by the above-mentioned.

  The pile joint rotation-suppressing structure according to a fifth invention is any one of the first to fourth inventions, wherein the key member is a through-hole through which a connecting pin attached to the first groove or the second groove is inserted. And the circumferential gap of the pile between the connecting pin and the side surface of the through hole is larger than the circumferential gap of the pile between both sides of the key member and the contact point. .

  According to 1st invention-5th invention, in the process in which a 2nd pile carries out predetermined relative rotation with respect to a 1st pile, it avoids that a shearing force acts on a connection pin, and prevents the breakage of a connection pin. By preventing the breakage of the connecting pin, it is possible to prevent the key member from dropping from the key groove portion, and to suppress the relative rotation of the first pile and the second pile more than necessary. Become.

  Moreover, according to 1st invention-5th invention, in the state which the 2nd pile carried out the predetermined relative rotation with respect to the 1st pile, a rotational force is made to act on the wide range of a key member, and the key per piece It is possible to increase the rotational torque that can be borne by the member, avoiding local deformation and breakage of the key member without increasing the number of key members, and dropping the key member from the key groove. It is possible to prevent the relative rotation of the first pile and the second pile more than necessary.

  In particular, according to the fifth invention, in the process of the second relative rotation of the second pile with respect to the first pile and the state of the predetermined relative rotation, the body portion of the connecting pin is sheared from the side surface of the through hole. By avoiding the action of force, it is possible to prevent breakage of the connecting pin, and by preventing breakage of the connecting pin, it is possible to prevent the key member from falling off the key groove, It is possible to suppress relative rotation with the two piles more than necessary.

It is a perspective view which shows the state which connected the 1st pile and the 2nd pile using the rotation suppression structure of the pile joint to which this invention is applied. It is a front view which shows 1st Embodiment of the rotation inhibitory structure of the pile joint to which this invention is applied. It is a perspective view which shows 1st Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a perspective view which shows the 1st groove | channel in 1st Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a front view which shows the 1st groove | channel in 1st Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a perspective view which shows the 2nd groove | channel in 1st Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a front view which shows the 2nd groove | channel in 1st Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a front view which shows the keyway part in 1st Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a perspective view which shows the key member of the rotation suppression structure of the pile joint to which this invention is applied. It is side sectional drawing which shows the rotation suppression structure of the pile joint to which this invention is applied. It is a front view which shows the process in which a 2nd pile carries out predetermined relative rotation with respect to a 1st pile using 1st Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a front view showing the state where the 2nd pile rotated predetermined relative to the 1st pile to the right using the 1st embodiment of the rotation inhibition structure of the pile joint to which the present invention was applied. It is a front view which shows the process in which a 2nd pile carries out predetermined relative rotation with respect to a 1st pile using 1st Embodiment of the rotation inhibitory structure of the pile joint to which this invention is applied. It is a front view showing the state where the 2nd pile rotated predetermined relative to the 1st pile to the 1st pile using a 1st embodiment of the rotation inhibition structure of a pile joint to which the present invention is applied. It is a front view explaining the manufacture precision of the key member in 1st Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a front view which shows 2nd Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a front view which shows the process in which a 2nd pile carries out predetermined relative rotation with respect to a 1st pile using 2nd Embodiment of the rotation inhibitory structure of the pile joint to which this invention is applied. It is a front view which shows the state which the 2nd pile rotated predetermined | prescribed relative rotation with respect to the 1st pile using 2nd Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a front view which shows the process in which a 2nd pile carries out predetermined relative rotation with respect to a 1st pile using 2nd Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. It is a front view which shows the state which the 2nd pile rotated predetermined relative to the left direction with respect to the 1st pile using 2nd Embodiment of the rotation inhibitory structure of the pile joint to which this invention is applied. It is a front view explaining the manufacture precision of the key member in 2nd Embodiment of the rotation suppression structure of the pile joint to which this invention is applied. In the connection structure of the conventional steel pipe pile disclosed by patent document 1, it is a front view which shows the state which the lower steel pipe pile and the upper steel pipe pile rotated predetermined | prescribed relative. In the connection structure of the conventional steel pipe pile disclosed by patent document 2, it is a front view which shows the state which the lower pile and the upper pile rotated predetermined | prescribed relative rotation.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the rotation suppression structure 1 of the pile joint to which this invention is applied is demonstrated in detail, referring drawings.

  As shown in FIG. 1, the pile joint rotation restraining structure 1 to which the present invention is applied has the first pile 6 and the second pile 7 connected in the vertical direction in the axial direction X. And the second pile 7 are used to suppress relative rotation more than necessary.

  As shown in FIGS. 2 and 3, the pile joint rotation suppression structure 1 to which the present invention is applied is connected to the upper end portion 6 a of the first pile 6 and the lower end portion 7 a of the second pile 7 in the first embodiment. The key groove part 2 formed in the location, and the key member 5 inserted in the key groove part 2 are provided over the side surface of the upper end part 6a of the 1st pile 6, and the side surface of the lower end part 7a of the 2nd pile 7.

  The key groove portion 2 includes a first groove 3 formed on the side surface of the upper end portion 6 a of the first pile 6 and a second groove 4 formed on the side surface of the lower end portion 7 a of the second pile 7. The key groove part 2 is in a state where the upper end part 6 a of the first pile 6 and the lower end part 7 a of the second pile 7 are connected, and the side surface of the upper end part 6 a of the first pile 6 and the lower end part 7 a of the second pile 7. It is formed continuously on the side.

  As shown in FIG. 4, the first groove 3 is a side surface of the upper end portion 6 a of the first pile 6, and a part of the upper end surface 6 b of the first pile 6 facing the second pile 7 shown in FIG. 3 is cut away. It is formed in a groove shape. The first groove 3 has a first contact point portion 31 provided on the left side portion 3 a of the first groove 3 and a second contact point portion 35 provided on the right side portion 3 b of the first groove 3. In the first groove 3, an insertion hole 39 is formed near the center of the first groove 3 in the circumferential direction Y of the first pile 6.

  Moreover, the 1st groove | channel 3 is linear with respect to the axial direction X of the 1st pile 6 toward the outer side of the axial direction X of the 1st pile 6 from the 1st contact point part 31, as shown in FIG. The first outer contact side portion 32 provided to be inclined in the shape of the first pile 6 toward the inner side in the axial direction X of the first pile 6 from the first contact point portion 31 with respect to the axial direction X of the first pile 6 And a first inner contact side portion 33 provided to be inclined linearly.

  Further, the first groove 3 is provided to be inclined linearly with respect to the axial direction X of the first pile 6 from the second contact point portion 35 toward the outside in the axial direction X of the first pile 6. Inclined linearly with respect to the axial direction X of the first pile 6 from the second outer contact side 36 and the second contact point 35 toward the inner side of the axial direction X of the first pile 6. And a second inner contact side portion 37.

  The first contact point portion 31 is provided on the left side portion 3 a of the first groove 3 so as to protrude toward the center of the first groove 3 in the circumferential direction Y of the first pile 6. In addition, the second contact point portion 35 is the right side portion 3b of the first groove 3 and is located in the circumferential direction of the first pile 6 at a portion facing the first contact point portion 31 in the circumferential direction Y of the first pile 6. It is provided so as to protrude toward the center of the first groove 3 in Y.

  The first outer contact side portion 32 and the second outer contact side portion 36 are provided at portions facing each other in the circumferential direction Y of the first pile 6. In addition, the first outer contact side portion 32 and the second outer contact side portion 36 are formed from the first contact point portion 31 and the second contact point portion 35 toward the outer side in the axial direction X of the first pile 6. The piles 6 are provided so as to be separated from each other in the circumferential direction Y.

  The first inner contact side portion 33 and the second inner contact side portion 37 are provided at portions facing each other in the circumferential direction Y of the first pile 6. In addition, the first inner contact side portion 33 and the second inner contact side portion 37 are formed from the first contact point portion 31 and the second contact point portion 35 toward the inner side in the axial direction X of the first pile 6. The piles 6 are provided so as to be separated from each other in the circumferential direction Y.

  The first outer contact side portion 32 and the second inner contact side portion 37 are provided to be inclined with respect to the axial direction X of the first pile 6 so as to be substantially parallel to each other. The first inner contact side 33 and the second outer contact side 36 are provided to be inclined with respect to the axial direction X of the first pile 6 so as to be substantially parallel to each other.

  As shown in FIG. 6, the second groove 4 is a side surface of the lower end portion 7 a of the second pile 7, and a part of the lower end surface 7 b of the second pile 7 facing the first pile 6 shown in FIG. 3 is cut away. It is formed in a groove shape. The second groove 4 has a third contact point portion 41 provided on the right side portion 4 b of the second groove 4 and a fourth contact point portion 45 provided on the left side portion 4 a of the second groove 4.

  Further, as shown in FIG. 7, the second groove 4 is a straight line with respect to the axial direction X of the second pile 7 from the third contact point portion 41 toward the outside in the axial direction X of the second pile 7. The third outer contact side portion 42 provided in a slanted manner and the third contact point portion 41 toward the inner side in the axial direction X of the second pile 7, with respect to the axial direction X of the second pile 7. And a third inner contact side portion 43 provided to be inclined linearly.

  Further, the second groove 4 is provided to be inclined linearly with respect to the axial direction X of the second pile 7 from the fourth contact point portion 45 toward the outside in the axial direction X of the second pile 7. Inclined linearly with respect to the axial direction X of the second pile 7 from the fourth outer contact side 46 and the fourth contact point 45 toward the inner side of the axial direction X of the second pile 7. And a fourth inner contact side portion 47.

  The third contact point portion 41 is provided on the right side portion 4 b of the second groove 4 so as to protrude toward the center of the second groove 4 in the circumferential direction Y of the second pile 7. Further, the fourth contact point portion 45 is the left side portion 4a of the second groove 4 and is located in the circumferential direction of the second pile 7 at a portion facing the third contact point portion 41 in the circumferential direction Y of the second pile 7. It is provided so as to protrude toward the center of the second groove 4 in Y.

  The third outer contact side portion 42 and the fourth outer contact side portion 46 are provided at portions facing each other in the circumferential direction Y of the second pile 7. Further, the third outer contact side portion 42 and the fourth outer contact side portion 46 are formed from the third contact point portion 41 and the fourth contact point portion 45 toward the outer side in the axial direction X of the second pile 7. The two piles 7 are provided so as to be separated from each other in the circumferential direction Y.

  The third inner contact side portion 43 and the fourth inner contact side portion 47 are provided at portions facing each other in the circumferential direction Y of the second pile 7. In addition, the third inner contact side 43 and the fourth inner contact side 47 are arranged in the direction from the third contact point 41 and the fourth contact point 45 toward the inner side in the axial direction X of the second pile 7. The two piles 7 are provided so as to be separated from each other in the circumferential direction Y.

  The third inner contact side 43 and the fourth outer contact side 46 are provided to be inclined with respect to the axial direction X of the second pile 7 so as to be substantially parallel to each other. The third outer contact side portion 42 and the fourth inner contact side portion 47 are provided to be inclined with respect to the axial direction X of the second pile 7 so as to be substantially parallel to each other.

  As shown in FIG. 8, the key groove portion 2 is provided so that the first outer contact side portion 32 and the third outer contact side portion 42 are substantially parallel to each other, and the second outer contact side portion 36 and the fourth outer contact side portion 36. The contact side portions 46 are provided so as to be substantially parallel to each other. The key groove portion 2 is provided such that the first inner contact side portion 33 and the third inner contact side portion 43 are substantially parallel to each other, and the second inner contact side portion 37, the fourth inner contact side portion 47, and the like. Are provided so as to be substantially parallel to each other.

  The key groove portion 2 includes the side surface of the upper end portion 6a of the first pile 6 and the second length so that the length of the first groove 3 in the axial direction X and the length of the second groove 4 in the axial direction X are substantially the same. It is formed continuously with the side surface of the lower end 7 a of the pile 7. The key groove portion 2 is not limited to this, and the length of the first groove 3 in the axial direction X and the length of the second groove 4 in the axial direction X may be formed at any ratio.

  Further, the key groove portion 2 is not limited to this, and the first groove 3 may have only one of the first contact point portion 31 and the second contact point portion 35, and the first outer contact side. It is good also as what has only any one of the part 32 or the 1st inner side contact edge part 33, the 2nd outer side contact edge part 36, or the 2nd inner side contact edge part 37. In addition, the key groove portion 2 is not limited thereto, and the insertion hole 39 may be formed at any position of the first groove 3.

  Furthermore, the key groove portion 2 is not limited thereto, and the second groove 4 may have only one of the third contact point portion 41 and the fourth contact point portion 45, and the third outer contact side. It is good also as what has only any one of the part 42 or the 3rd inner side contact edge part 43, the 4th outer side contact edge part 46, or the 4th inner side contact edge part 47. The key groove portion 2 is not limited to this, and the insertion hole 39 may be formed in the second groove 4.

  As shown in FIG. 9, the key member 5 is a steel piece or the like molded into a substantially rectangular parallelepiped shape. The key member 5 has a left side 51 that faces the left side 3a of the first groove 3 shown in FIG. 4 and the left side 4a of the second groove 4 shown in FIG. Further, the key member 5 has a right side 52 facing the right side 3b of the first groove 3 shown in FIG. 4 and the right side 4b of the second groove 4 shown in FIG. The key member 5 includes an upper right curved portion 54, a lower right curved portion 55, an upper left curved portion 56, and a lower left curved portion 57, and four corners are formed in an arc shape. The key member 5 is not limited to this, and the key member 5 may not be formed in an arc shape.

  The key member 5 is a stepped portion 58 formed by partially reducing the thickness of the key member 5 at a position corresponding to the insertion hole 39 of the key groove portion 2 in a state where the key member 5 is fitted in the key groove portion 2 shown in FIG. And a through hole 59 formed through the stepped portion 58. The key member 5 is not limited to this, and only the through hole 59 may be formed and the stepped portion 58 may not be formed.

  As shown in FIG. 10, the key member 5 is inserted into the key groove portion 2, and the insertion hole 39 of the key groove portion 2 and the through hole 59 of the key member 5 are overlapped to overlap the insertion hole 39 of the key groove portion 2. The connecting pin 8 is inserted into the through hole 59 of the key member 5 and is rotatably attached. The key member 5 is fixed so as not to drop off from the key groove portion 2 by bringing the head portion 81 of the connecting pin 8 into contact with the stepped portion 58 of the key member 5.

  As shown in FIG. 11, the pile joint rotation suppression structure 1 to which the present invention is applied is a process in which the second pile 7 rotates in a right direction with respect to the first pile 6 in the first embodiment. One point of the left side 51 of the key member 5 and the first contact point portion 31 are in contact with each other, and one point of the left side 51 of the key member 5 and the fourth contact point portion 45 are in contact with each other. In addition, the rotation suppression structure 1 of the pile joint to which the present invention is applied is a process in which the second pile 7 rotates in the right direction with respect to the first pile 6 at one point on the right side 52 of the key member 5. The second contact point portion 35 comes into contact, and one point on the right side 52 of the key member 5 comes into contact with the third contact point portion 41.

  The pile joint rotation suppression structure 1 to which the present invention is applied includes one point on the left side 51 and the right side 52 of the key member 5, the first contact point portion 31, the second contact point portion 35, the third contact point portion 41, and The key member 5 rotates in the right direction while being in contact with the fourth contact point portion 45. At this time, the rotation suppression structure 1 of the pile joint to which the present invention is applied is a key member with the first contact point portion 31, the second contact point portion 35, the third contact point portion 41, and the fourth contact point portion 45 as rotation axes. Since 5 rotates, it is not necessary to use the connecting pin 8 as the rotation axis of the key member 5.

  For this reason, in the pile joint rotation restraining structure 1 to which the present invention is applied, the shear force acts on the connecting pin 8 in the process in which the second pile 7 rotates in the right direction with respect to the first pile 6. This can be avoided and the breakage of the connecting pin 8 can be prevented. Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied prevents the key member 5 from dropping from the key groove portion 2 by preventing the linking pin 8 from being broken, and the first pile 6 and the first It becomes possible to suppress relative rotation more than necessary with the two piles 7.

  As shown in FIG. 12, the pile joint rotation suppression structure 1 to which the present invention is applied has a second pile 7 rotated in the right direction with respect to the first pile 6 and the left side of the key member 5. The side 51 and the first inner contact side portion 33 are in surface contact within the range of the region A11, and the left side 51 of the key member 5 and the fourth outer contact side portion 46 are in surface contact within the range of the region A41. Further, the pile joint rotation restraining structure 1 to which the present invention is applied has the second side 7 of the key pile 5 and the third side of the key pile 5 in a state where the second pile 7 rotates in the right direction with respect to the first pile 6. The inner contact side 43 is in surface contact with the region A31, and the right side 52 of the key member 5 and the second outer contact side 36 are in surface contact with the region A21.

  For this reason, the rotation suppression structure 1 of the pile joint to which the present invention is applied is a state in which the second pile 7 rotates in the right direction with respect to the first pile 6 and the left side portion 3a of the first groove 3 and Point contact of the left side 51 of the key member 5 with the left side 4a of the second groove 4 can be avoided, and the right side of the key member 5 with respect to the right side 3b of the first groove 3 and the right side 4b of the second groove 4 Point contact of the side 52 can be avoided. At this time, the rotation suppression structure 1 of the pile joint to which the present invention is applied avoids that the rotational torque due to the relative rotation between the first pile 6 and the second pile 7 is locally transmitted to the key member 5. A rotational force can be applied to the wide range of the key member 5 from the regions A11, A41, A31 and A21, and the key member 5 can be prevented from being locally deformed or damaged.

  Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied has a rotational force applied to a wide range of the key member 5 in a state where the second pile 7 rotates in the right direction with respect to the first pile 6. Thus, the rotational torque that can be borne by each key member 5 can be increased. The pile joint rotation suppression structure 1 to which the present invention is applied avoids local deformation and breakage of the key member 5 without increasing the number of the key members 5, and the key member 5 falls off from the key groove portion 2. This can prevent the relative rotation of the first pile 6 and the second pile 7 from being more than necessary.

  As shown in FIG. 13, the pile joint rotation suppression structure 1 to which the present invention is applied is a process in which, in the first embodiment, the second pile 7 performs a predetermined relative rotation in the left direction with respect to the first pile 6. A point on the left side 51 of the key member 5 and the fourth contact point part 45 are in contact with each other, and a point on the left side 51 of the key member 5 and the first contact point part 31 are in contact with each other. In addition, the rotation suppression structure 1 of the pile joint to which the present invention is applied is a process in which the second pile 7 rotates in a predetermined direction relative to the first pile 6 in the left direction, with one point on the right side 52 of the key member 5. The third contact point portion 41 comes into contact, and one point on the right side 52 of the key member 5 comes into contact with the second contact point portion 35.

  The pile joint rotation suppression structure 1 to which the present invention is applied includes one point on the left side 51 and the right side 52 of the key member 5, the first contact point portion 31, the second contact point portion 35, the third contact point portion 41, and The key member 5 rotates in the left direction while being in contact with the fourth contact point portion 45. At this time, the rotation suppression structure 1 of the pile joint to which the present invention is applied is a key member with the first contact point portion 31, the second contact point portion 35, the third contact point portion 41, and the fourth contact point portion 45 as rotation axes. Since 5 rotates, it is not necessary to use the connecting pin 8 as the rotation axis of the key member 5.

  For this reason, in the rotation suppression structure 1 of the pile joint to which the present invention is applied, the shear force acts on the connecting pin 8 in the process in which the second pile 7 rotates in the left direction with respect to the first pile 6. This can be avoided and the breakage of the connecting pin 8 can be prevented. Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied prevents the key member 5 from dropping from the key groove portion 2 by preventing the linking pin 8 from being broken, and the first pile 6 and the first It becomes possible to suppress relative rotation more than necessary with the two piles 7.

  As shown in FIG. 14, the pile joint rotation restraining structure 1 to which the present invention is applied has the second pile 7 rotated in the left direction with respect to the first pile 6, and the left side of the key member 5. The side 51 and the first outer contact side 32 are in surface contact within the area A12, and the left side 51 of the key member 5 and the fourth inner contact side 47 are in surface contact within the area A42. Moreover, the rotation suppression structure 1 of the pile joint to which the present invention is applied is a state in which the right side 52 of the key member 5 and the third side 3 of the key member 5 are in a state where the second pile 7 is rotated in the left direction with respect to the first pile 6. The outer contact side 42 is in surface contact with the area A32, and the right side 52 of the key member 5 is in surface contact with the second inner contact side 37 within the area A22.

  For this reason, the rotation suppression structure 1 of the pile joint to which the present invention is applied is a state in which the second pile 7 rotates in a left direction with respect to the first pile 6 and the left side 3a of the first groove 3 and Point contact of the left side 51 of the key member 5 with the left side 4a of the second groove 4 can be avoided, and the right side of the key member 5 with respect to the right side 3b of the first groove 3 and the right side 4b of the second groove 4 Point contact of the side 52 can be avoided. At this time, the rotation suppression structure 1 of the pile joint to which the present invention is applied avoids that the rotational torque due to the relative rotation between the first pile 6 and the second pile 7 is locally transmitted to the key member 5. A rotational force can be applied to the wide range of the key member 5 from the regions A12, A42, A32 and A22, and the key member 5 can be prevented from being locally deformed or broken.

  Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied has a rotational force applied to a wide range of the key member 5 in a state in which the second pile 7 rotates in the left direction with respect to the first pile 6. Thus, the rotational torque that can be borne by each key member 5 can be increased. The pile joint rotation suppression structure 1 to which the present invention is applied avoids local deformation and breakage of the key member 5 without increasing the number of the key members 5, and the key member 5 falls off from the key groove portion 2. This can prevent the relative rotation of the first pile 6 and the second pile 7 from being more than necessary.

  As shown in FIGS. 11 and 13, in the key member 5, the upper right curved portion 54 or the upper left curved portion 56 is formed in the second groove 4 in the process in which the second pile 7 rotates with respect to the first pile 6. So that the rotation of the key member 5 is not restricted and the lower right curved portion 55 or the lower left curved portion 57 contacts the first groove 3 and the rotation of the key member 5 is restricted. In the axial direction X, a predetermined length is provided, and a predetermined clearance is provided between the first groove 3 and the second groove 4 in the axial direction X.

  As shown in FIG. 15, the key member 5 is inserted into the key groove portion 2 and is attached with the connecting pin 8, and between the main body portion 82 of the connecting pin 8 and the side surface 59 a of the through hole 59. Predetermined gaps L1 and L2 are formed in the circumferential direction Y of one pile 6. Further, the key member 5 has a predetermined gap L3 formed between the first contact point portion 31 of the first groove 3 and the left side 51 of the key member 5, and the second contact point portion 35 of the first groove 3. And a right side 52 of the key member 5 is formed with a predetermined gap L4. The key member 5 is designed with manufacturing accuracy such that the total gap (L1 + L2) including the gap L1 and the gap L2 is larger than the total gap (L3 + L4) including the gap L3 and the gap L4.

  For this reason, the rotation restraint structure 1 of the pile joint to which the present invention is applied is a state in which the first groove 3 of the first groove 3 is in a state where the second pile 7 is rotated to the right with respect to the first pile 6 shown in FIG. Contact between the first contact point portion 31 and the left side 51 of the key member 5 can avoid contact between the main body portion 82 of the connecting pin 8 and the side surface 59a of the through hole 59. Further, the pile joint rotation suppression structure 1 to which the present invention is applied is the first groove 3 in the first groove 3 in a state in which the second pile 7 is rotated in the left direction with respect to the first pile 6 shown in FIG. The contact between the two contact point portion 35 and the right side 52 of the key member 5 makes it possible to avoid contact between the main body portion 82 of the connecting pin 8 and the side surface 59a of the through hole 59.

  At this time, the pile joint rotation suppression structure 1 to which the present invention is applied has a predetermined relative rotation with respect to the first pile 6 and the second pile 7 performs a predetermined relative rotation in the right direction or the left direction. In this state, it is possible to prevent a shearing force from acting on the main body portion 82 of the connecting pin 8 from the side surface 59a of the through hole 59 and to prevent the connecting pin 8 from being broken. Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied prevents the key member 5 from dropping from the key groove portion 2 by preventing the linking pin 8 from being broken, and the first pile 6 and the first It becomes possible to suppress relative rotation more than necessary with the two piles 7.

  Next, a second embodiment of the pile joint rotation restraining structure 1 to which the present invention is applied will be described. In addition, about the component same as the component mentioned above, the description below is abbreviate | omitted by attaching | subjecting the same code | symbol.

  As shown in FIG. 16, the pile joint rotation suppression structure 1 to which the present invention is applied includes a key groove portion 2 and a key member 5 in the second embodiment, and the key groove portion 2 includes the first groove 3 and the second groove 2. Groove 4.

  The first groove 3 includes a first contact point portion 31, a second contact point portion 35, a first outer contact side portion 32, a first inner contact side portion 33, a second outer contact side portion 36, and a second inner contact side portion. In the second embodiment of the rotation suppression structure 1 of the pile joint to which the present invention is applied, the axial direction of the first pile 6 in the first inner contact side portion 33 and the second inner contact side portion 37 Below X, the first pile 6 has an arc-shaped first sliding contact portion 34 and a second sliding contact portion 38 that are curved toward the center of the first groove 3 in the circumferential direction Y of the first pile 6. Since the first groove 3 includes the first sliding contact portion 34 and the second sliding contact portion 38, the first groove 3 has an arc shape below the first inner contact side portion 33 and the second inner contact side portion 37. The molding of 3 can be facilitated.

  The second groove 4 includes a third contact point portion 41, a fourth contact point portion 45, a third outer contact side portion 42, a third inner contact side portion 43, a fourth outer contact side portion 46, and a fourth inner contact side portion. In the second embodiment of the rotation suppression structure 1 of the pile joint to which the present invention is applied, the axial direction of the second pile 7 in the third inner contact side 43 and the fourth inner contact side 47 Above X, there is an arc-shaped third sliding contact portion 44 and a fourth sliding contact portion 48 that are formed to bend toward the center of the second groove 4 in the circumferential direction Y of the second pile 7. Since the second groove 4 has the third sliding contact portion 44 and the fourth sliding contact portion 48, the upper side of the third inner contact side portion 43 and the fourth inner contact side portion 47 has an arc shape, and the second groove 4 4 can be easily formed.

  As shown in FIG. 17, the rotation restraining structure 1 of the pile joint to which the present invention is applied is a process in which the second pile 7 rotates in a right direction with respect to the first pile 6 in the second embodiment. The lower left curved portion 57 of the key member 5 rotates while abutting at the first sliding contact portion 34 of the first groove 3 and the lower right curved portion of the key member 5 at the second sliding contact portion 38 of the first groove 3. 55 will rotate while abutting. Further, the pile joint rotation restraining structure 1 to which the present invention is applied is the third sliding contact portion of the second groove 4 in the process in which the second pile 7 rotates in the right direction with respect to the first pile 6. 44, the upper right curved portion 54 of the key member 5 rotates while abutting, and the upper left curved portion 56 of the key member 5 rotates while abutting at the fourth sliding contact portion 48 of the second groove 4. Thereby, the rotation suppression structure 1 of the pile joint which applied this invention is the key member 5 in the process in which the 2nd pile 7 carries out the predetermined relative rotation to the right direction with respect to the 1st pile 6 in 2nd Embodiment. Can be smoothly rotated.

  As shown in FIG. 18, the pile joint rotation suppression structure 1 to which the present invention is applied is the second embodiment in a state where the second pile 7 is rotated in a predetermined direction relative to the first pile 6 in the right direction. The second slidable contact portion 38 of the first groove 3 and the lower right curved portion 55 of the key member 5 are in surface contact within the region A23, and the fourth slidable contact portion 48 of the second groove 4 and the upper left of the key member 5 are in contact with each other. The curved portion 56 is in surface contact with the region A43. At this time, the rotation suppression structure 1 of the pile joint to which the present invention is applied can apply a rotational force not only to the regions A11, A41, A31 and A21 but also to the wide range of the key member 5 from the regions A23 and A43. It is possible to avoid the key member 5 from being locally deformed or damaged.

  Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied has a rotational force applied to a wide range of the key member 5 in a state where the second pile 7 rotates in the right direction with respect to the first pile 6. Thus, the rotational torque that can be borne by each key member 5 can be increased. The pile joint rotation suppression structure 1 to which the present invention is applied avoids local deformation and breakage of the key member 5 without increasing the number of the key members 5, and the key member 5 falls off from the key groove portion 2. This can prevent the relative rotation of the first pile 6 and the second pile 7 from being more than necessary.

  As shown in FIG. 19, the pile joint rotation restraining structure 1 to which the present invention is applied is a process in which, in the second embodiment, the second pile 7 performs a predetermined relative rotation in the left direction with respect to the first pile 6. The lower right curved portion 55 of the key member 5 rotates while abutting at the second sliding contact portion 38 of the first groove 3 and the lower left curved portion of the key member 5 at the first sliding contact portion 34 of the first groove 3. 57 rotates while abutting. Moreover, the rotation suppression structure 1 of the pile joint to which the present invention is applied is the fourth sliding contact portion of the second groove 4 in the process in which the second pile 7 rotates in the left direction with respect to the first pile 6. At 48, the upper left curved portion 56 of the key member 5 rotates while abutting, and the upper right curved portion 54 of the key member 5 rotates while abutting at the third sliding contact portion 44 of the second groove 4. Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied is the key member 5 in the process of the second relative rotation of the second pile 7 in the left direction with respect to the first pile 6 in the second embodiment. Can be smoothly rotated.

  As shown in FIG. 20, the pile joint rotation restraining structure 1 to which the present invention is applied is in a state in which the second pile 7 is rotated in a predetermined direction relative to the first pile 6 in the left direction in the second embodiment. The first slidable contact portion 34 of the first groove 3 and the lower left curved portion 57 of the key member 5 are in surface contact within the area A13, and the third slidable contact portion 44 of the second groove 4 and the upper right curved portion of the key member 5 are curved. The portion 54 is in surface contact with the region A33. At this time, the rotation suppression structure 1 of the pile joint to which the present invention is applied can apply the rotational force not only to the regions A12, A42, A32 and A22 but also to the wide range of the key member 5 from the regions A13 and A33. It is possible to avoid the key member 5 from being locally deformed or damaged.

  Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied has a rotational force applied to a wide range of the key member 5 in a state in which the second pile 7 rotates in the left direction with respect to the first pile 6. Thus, the rotational torque that can be borne by each key member 5 can be increased. The pile joint rotation suppression structure 1 to which the present invention is applied avoids local deformation and breakage of the key member 5 without increasing the number of the key members 5, and the key member 5 falls off from the key groove portion 2. This can prevent the relative rotation of the first pile 6 and the second pile 7 from being more than necessary.

  In the pile joint rotation suppression structure 1 to which the present invention is applied, also in the second embodiment, a shear force acts on the connecting pin 8 in the process of the second relative rotation of the second pile 7 with respect to the first pile 6. It is possible to prevent the connecting pin 8 from being broken. Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied prevents the key member 5 from dropping from the key groove portion 2 by preventing the linking pin 8 from being broken, and the first pile 6 and the first It becomes possible to suppress relative rotation more than necessary with the two piles 7.

  As shown in FIG. 21, the key member 5 is inserted into the key groove portion 2 and attached with the connecting pin 8, and between the main body portion 82 of the connecting pin 8 and the side surface 59 a of the through hole 59. Predetermined gaps L1 and L2 are formed in the circumferential direction Y of one pile 6. Further, the key member 5 has a predetermined gap L3 formed between the first contact point portion 31 of the first groove 3 and the left side 51 of the key member 5, and the second contact point portion 35 of the first groove 3. And a right side 52 of the key member 5 is formed with a predetermined gap L4. The key member 5 is designed with manufacturing accuracy such that the total gap (L1 + L2) including the gap L1 and the gap L2 is larger than the total gap (L3 + L4) including the gap L3 and the gap L4.

  At this time, the rotation restraint structure 1 of the pile joint to which the present invention is applied is a process in which the second pile 7 rotates relative to the first pile 6 in the right direction or the left direction in the second embodiment. In a state where the relative rotation is performed, it is possible to avoid the shearing force from acting on the main body portion 82 of the connecting pin 8 from the side surface 59a of the through hole 59, and to prevent the connecting pin 8 from being broken. Thereby, the rotation suppression structure 1 of the pile joint to which the present invention is applied also prevents the key member 5 from dropping from the key groove portion 2 by preventing the linking pin 8 from breaking in the second embodiment. It becomes possible to suppress the relative rotation of the 1st pile 6 and the 2nd pile 7 more than necessary.

  As mentioned above, although the example of embodiment of this invention was demonstrated in detail, all the embodiment mentioned above showed only the example of actualization in implementing this invention, and these are the technical aspects of this invention. The range should not be construed as limiting.

  For example, the rotation suppression structure 1 of a pile joint to which the present invention is applied is not limited to the one used to connect the first pile 6 and the second pile 7 in the vertical direction, but the first pile 6 and the second pile 7. May be used for connecting the two in the left-right direction.

1: Pile joint rotation suppression structure 2: Key groove portion 3: First groove 3 a: Left side portion 3 b: Right side portion 31: First contact point portion 32: First outer contact side portion 33: First inner contact side portion 34: First sliding contact portion 35: second contact point portion 36: second outer contact side portion 37: second inner contact side portion 38: second sliding contact portion 39: insertion hole 4: second groove 4a: left side portion 4b: Right side portion 41: third contact point portion 42: third outer contact side portion 43: third inner contact side portion 44: third sliding contact portion 45: fourth contact point portion 46: fourth outer contact side portion 47: first 4 inner contact side portion 48: fourth sliding contact portion 5: key member 51: left side 52: right side 54: upper right curved portion 55: lower right curved portion 56: upper left curved portion 57: lower left curved portion 58: step 59 : Through hole 59a: Side surface 6: First pile 6a: Upper end portion 6b: Upper end surface 7: Second pile 7a: Lower end portion 7b: Lower end surface 8: Connection Down 81: Head 82: main body X: axial direction Y: circumferentially

Claims (5)

With the end of one pile connected to the end of the other pile, the rotation suppression structure of the pile joint that suppresses the relative rotation of these piles,
In a state where the end portion of the first pile and the end portion of the second pile are connected, a key groove portion formed continuously on the side surface of the end portion of the first pile and the side surface of the end portion of the second pile, A key member fitted into the key groove portion across the side surface of the end portion of the first pile and the side surface of the end portion of the second pile;
The key groove portion includes a first groove formed by cutting out an end surface facing the second pile on the side surface of the end portion of the first pile, and an end surface facing the first pile on the side surface of the end portion of the second pile. A second groove formed by notching,
Either or both of the first groove and the second groove rotate the key member while being in contact with one point on the side of the key member by a predetermined relative rotation between the first pile and the second pile. A structure for inhibiting rotation of a pile joint, comprising: a contact point portion; and a contact side portion in which a side of the key member contacts with a predetermined length. The first groove has a first contact point that rotates the key member while being in contact with a point on the side of the key member by a predetermined relative rotation between the first pile and the second pile, and the first contact. A second contact point provided at a point facing the point in the circumferential direction of the first pile, and a first contact side provided inclined from the first contact point to the axial direction of the first pile And a second contact side portion that is provided to be inclined with respect to the axial direction of the first pile from the second contact point portion at a portion facing the first contact side portion in the circumferential direction of the first pile. And
The first contact side portion and the second contact side portion are provided so as to be separated from each other in the axial direction of the first pile from the first contact point portion and the second contact point portion. The rotation inhibition structure of a pile joint according to claim 1. The first contact side is a first outer contact side provided on the outer side in the axial direction of the first pile from the first contact point, and an inner side in the axial direction of the first pile from the first contact point. Having either one or both of the first inner contact sides provided in the
The second contact side portion includes a second outer contact side portion provided substantially parallel to the first inner contact side portion on the outer side in the axial direction of the first pile from the second contact point portion, and the second contact. 3. The pile according to claim 2, further comprising any one or both of a second inner contact side portion provided substantially in parallel with the first outer contact side portion on the inner side in the axial center direction of the first pile from the point portion. Joint rotation suppression structure. The second groove includes a third contact point portion that rotates the key member while being in contact with one point on the side of the key member by a predetermined relative rotation between the first pile and the second pile, and the third contact. A fourth contact point provided at a point facing the point in the circumferential direction of the second pile, and a third contact side provided inclined from the third contact point to the axial direction of the second pile. And a fourth contact side portion provided at a position facing the third contact side portion in the circumferential direction of the second pile and being inclined with respect to the axial direction of the second pile from the fourth contact point portion. And
The third contact side portion includes a third inner contact side portion provided substantially in parallel with the first inner contact side portion on the inner side in the axial direction of the second pile from the third contact point portion, and the third contact. Having either one or both of the third outer contact side provided substantially parallel to the first outer contact side on the outer side in the axial direction of the second pile from the point,
The fourth contact side portion includes a fourth inner contact side portion provided substantially parallel to the second inner contact side portion on the inner side in the axial direction of the second pile from the fourth contact point portion, and the fourth contact. The pile according to claim 3, further comprising any one or both of a fourth outer contact side portion provided substantially parallel to the second outer contact side portion on the outer side in the axial direction of the second pile from the point portion. Joint rotation suppression structure. The key member is formed with a through hole through which a connecting pin attached to the first groove or the second groove is inserted, and a circumferential clearance of a pile between the connecting pin and the side surface of the through hole is the key member. The pile joint rotation-suppressing structure according to any one of claims 1 to 4, wherein the pile joint rotation prevention gap is larger than a clearance in a circumferential direction of the pile between both sides of the member and the contact point portion.

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