JP4614438B2 - Separator connection bracket - Google Patents

Description

  The present invention relates to a separator connecting bracket used when a concrete formwork is supported inside a retaining wall.

The earth retaining wall is configured by arranging sheet piles between H-shaped steel cast at appropriate intervals. When a concrete wall is constructed inside the earth retaining wall, the concrete formwork is separated by the separator. It is necessary to support the retaining wall. In this case, one end of the separator is connected to the retaining wall, and a concrete mold is connected to the other end of the separator. The separator connecting bracket used to connect one end of the separator to the retaining wall For example, as described in Patent Document 1, a connecting metal fitting that can be attached to a retaining wall using a wedge plate has been considered.
Registered Design No. 1196695

  However, in the conventional separator connecting bracket using the wedge plate described in Patent Document 1, it is necessary to provide a through hole in the sheet pile constituting the retaining wall, and in the case of a wooden sheet pile, it can be used relatively easily. In the case of a sheet pile, it was not easy to provide a through hole through which a relatively thick rod-shaped main body of the connecting metal fitting can be passed. Also, after inserting the rod-shaped main body from the sheet pile to the back side of the retaining wall, rotate the retaining piece pivotally supported at the tip of the rod-shaped main body, and the retaining piece is caught on the back side of the sheet pile, and the rod-shaped main body comes off. In particular, when earth and sand are backfilled on the back side of the earth retaining wall, it is not easy to perform the work promptly and reliably.

  An object of the present invention is to provide a separator fitting that can solve the conventional problems as described above, and its means is indicated by a reference numeral of an embodiment described later. On one end side, a side-shaped L-shaped hook portion 2 comprising a base column portion 15 extending in the extending direction of the rod-shaped main body 1 and a tip receiving portion 16 extending from the base column portion 15 at right angles and laterally is provided. A wedge driving hole 21 is provided in the base pillar portion 15 of the hook portion 2, and a separator connecting portion 3 is provided on the other end side of the rod-shaped main body 1, and a wedge plate driven into the wedge driving hole 21. 4 and a front end receiving portion 16 of the hook portion 2, which is a separator connecting bracket for sandwiching and fixing a plate member 23, wherein the hook portion 2 is formed at the free end portion of the base column portion 15 at the rod-like main body 1. Attach to one end of A wedge plate receiving portion 22 for receiving the outer side 4a of the wedge plate 4 together with the outer end 21a of the wedge driving hole 21 is formed at one end of the rod-like main body 1 facing the tip receiving portion 16 of the hook portion 2. It has a configuration.

  Specifically, as described in claim 2, the rod-shaped main body 1 is formed by folding a belt-like plate, and a female screw hole 5a provided in the folded end portion 1a. A cylindrical end portion 13 in the lengthwise direction of the rod-shaped main body is formed at both free ends of the strip-like plate, and the rod-shaped main body 1 is formed at the end of the base column portion 15 of the hook portion 2. A groove-shaped portion 18 that fits externally on the cylindrical end portion 13 is provided, and the groove-shaped portion 18 and the cylindrical end portion 13 of the rod-shaped main body 1 are coupled by a connecting pin 20 penetrating both of them. A wedge plate receiving portion 22 that receives the outer side 4 a of the wedge plate 4 together with the outer end 21 a of the wedge driving hole 21 can be formed on one cylindrical end portion 13.

  In addition, as described in claim 3, both free end portions (plate portions 1b, 1c) of the strip-shaped plate constituting the cylindrical end portion 13 of the rod-shaped main body 1 face each other in the wedge plate driving direction, and the wedge The plate receiving portion 22 is constituted by a free end portion (plate portion 1 c) of a belt-like plate located on the side far from the wedge driving hole 21, and the free end portion (the free end portion of the belt-like plate located on the side close to the wedge driving hole 21 ( 1b) can be shortened so as not to interfere with the wedge plate 4.

  Furthermore, as described in claim 4, the cylindrical end portion 13 of the rod-shaped main body 1 has a U-shaped portion formed on both free end portions (plate portions 1b, 1c) of the belt-like plate in the wedge plate driving direction. In this case, one of the left and right side walls 11a, 11b and 12a, 12b of each U-shaped part is formed in a convex shape and the other is formed in a concave shape. The convex side wall portions 11a, 12b and the concave side wall portions 11b, 12a are overlapped with each other so that the connecting pins 20 pass through the convex side wall portions 11a, 12b in parallel with each other. Can be configured.

  According to the separator coupling bracket of the present invention having the above-described configuration, the tip receiving portion of the hook portion of the rod-shaped main body is inserted from the side into the back side of the edge portion of the H-shaped steel used as the pillar material of the retaining wall, By simply driving a wedge plate laterally into a wedge driving hole provided in the base pillar portion of the hook portion, the connecting bracket can be easily attached to the earth retaining wall. Therefore, the preparation work for making a through-hole in the sheet pile as in the prior art becomes unnecessary, and the separator can be easily and quickly connected even with a retaining wall using a steel sheet pile.

  In addition, according to the structure of Claims 2-4, this invention can be implemented cheaply with a simple structure.

  Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a rod-shaped main body, 2 is a hook portion connected to one end of the rod-shaped main body 1, and 3 is formed at the other end of the rod-shaped main body 1. A separator connecting portion and 4 are wedge plates.

  As shown in FIGS. 1 to 5, the rod-shaped main body 1 is formed by bending a belt-like plate into a U-shape, and the separator connecting portion 3 has a nut 5 on the inner side of the belt-like plate folding end 1 a and its female screw. The axial center of the hole 5a is fixed so as to be concentric with the longitudinal center line of the rod-shaped main body 1, and a through-hole 6 concentric with the female screw hole 5a is provided in the belt-like plate folding end 1a. The cut-and-raised tongue piece 7 that forms the through-hole 6 is bent into an L shape so as to protrude toward the axial center of the through-hole 6, and from the bent position of the L-shaped cut-and-raised tongue piece 7 to the base side, A trapezoidal cut and raised tongue piece 8 having a wide base at the bent position of the L shaped cut and raised tongue piece 7 is formed. As a fixing method of the nut 5 in this embodiment, the nut 5 is held in a non-rotating state by a pair of protrusions 9 projecting inward from the belt-like plate folding end 1a, and from the belt-like plate parallel plate portions 1b and 1c. A method is adopted in which the nut 5 is clamped and fixed between the pair of projecting portions 10 projecting inward and the strip-shaped plate folded end portion 1a. However, any method such as simply welding the nut 5 can be used. good. Of course, the configuration of the separator connecting portion 3 is not limited to that shown in this embodiment. For example, a through-female screw hole can be provided directly in the belt-like plate folding end 1a.

  As shown in FIG. 5, the free end portions of the strip-like plate parallel plate portions 1b and 1c constituting the rod-shaped main body 1 are formed in a U-shaped cross section in which the groove portions face each other, and on the opposite sides of the U-shaped portions. One side wall portion 11b, 12a is formed in a concave shape, and the other side wall portion 11a, 12b is formed in a convex shape that fits into the other side concave wall portion 11b, 12a. The end of the rod-shaped main body 1 on the side opposite to a certain side is formed into a rectangular tube shape, and in this rectangular tube-shaped end portion 13, a convex shape that faces each other in a direction orthogonal to the facing direction of the strip-shaped plate parallel plate portions 1b and 1c. Concentric through holes 14 are provided in the side walls 11a and 12b.

  As shown in FIG. 5, the hook portion 2 is constituted by a hook portion constituting member different from the rod-shaped main body 1. This hook portion constituting member has a side shape L shape having a base column portion 15 and a tip receiving portion 16 extending from the tip thereof in a right-angled lateral direction, and is L from the base column portion 15 to the vicinity of the tip of the tip receiving portion 16. Reinforcing ribs 17 that are continuous in shape and project outward are formed, and the free end portion of the base column portion 15 is formed with a groove-shaped portion 18 that does not have a blade plate portion that extends from the reinforcing rib 17 to the left and right sides. When the groove 18 is externally fitted to the rectangular tube end 13 of the rod-shaped body 1 from the side, the through hole 19 that matches the through hole 14 provided in the rectangular tube end 13 is a groove. It is provided on both side walls of the shape portion 18, and a coupling pin (which uses a rivet, but may be a bolt and nut) 20 is inserted into the through holes 14, 19, and the rod-shaped main body 1 and the hook portion (hook portion constituting member) 2) are combined and integrated.

  The wedge plate 4 is driven in the extending direction of the tip receiving portion 16 of the hook portion 2 from a wedge driving hole 21 provided in the reinforcing rib 17 in the base column portion 15 of the hook portion 2, and the tip receiving portion thereof The outer side 4 a opposite to the side having 16 is received by a wedge plate receiving portion 22 provided at the rectangular tube-shaped end portion 13 of the rod-shaped main body 1. The wedge plate receiving portion 22 is a free end portion of the plate portion 1c far from the wedge driving hole 21 among the free end portions of the strip-like plate parallel plate portions 1b and 1c constituting the rectangular tube-like end portion 13 of the rod-shaped main body 1. The U-shaped portion formed by the free end portion of the other plate portion 1 b is shortened so as not to interfere with the wedge plate 4. More specifically, the wedge plate receiving portion 22 is composed of an end edge 22a of the plate portion 1c and both side wall portions 12a and 12b in a U-shaped portion formed by the free end portion of the plate portion 1c. When the outer side 4a of the wedge plate 4 driven from the wedge driving hole 21 is received by the outer end 21a of the wedge driving hole 21 and the edge 22a of the plate portion 1c, the inner side 4b of the wedge plate 4 is hooked. It is comprised so that it may become parallel with the front-end | tip receiving part 16 of the part 2, At this time, the outer side 4a of the wedge board 4 is between the both-side wall parts 12a and 12b in the U-shaped part formed in the free end part of the board part 1c. The wedge plate 4 is configured to be fitted and to regulate the direction of the wedge plate 4.

  The method of using the connecting metal fitting configured as described above will be described. As shown in FIG. 1, a hook is attached to the back side of an edge portion (hereinafter referred to as a plate material) 23 of H-shaped steel as a column material constituting the retaining wall. The tip receiving portion 16 of the portion 2 is inserted horizontally from the side, and the plate member 23 is relatively fitted inside the tip receiving portion 16 of the hook portion 2.

  Next, the wedge plate 4 is inserted into the wedge driving hole 21 of the hook portion 2 from the pointed end side in the extending direction of the tip receiving portion 16 of the hook portion 2, and the outer side 4 a of the wedge plate 4 is inserted into the wedge driving hole 21. The outer end 21a is received by the edge 22a of the plate portion 1c of the wedge plate receiving portion 22 of the rod-shaped main body 1, and the posture in which the inner side 4b of the wedge plate 4 is parallel to the tip receiving portion 16 of the hook portion 2 is maintained. The wedge plate 4 is driven in while being put, and the plate member 23 is sandwiched between the inner side 4 b of the wedge plate 4 and the tip receiving portion 16 of the hook portion 2, and a connecting bracket is attached to the plate member 23. At this time, the outer side 4a of the wedge plate 4 is fitted between both side wall portions 12a and 12b of the plate portion 1c constituting the wedge plate receiving portion 22, and the wedge plate 4 is inserted into the wedge plate receiving portion while being driven. There is no fear that the edge 22a of the plate portion 1c at 22 is detached laterally.

  When the connecting metal fitting is attached to the plate member 23 as described above, the one end screw shaft portion 24a of the separator 24 is screwed into the female screw hole 5a in the separator connecting portion 3 of the rod-shaped main body 1 to a predetermined depth, and the rod-shaped main body 1 is extended. Connect the separator 24 in the direction. Thereafter, the tip of the L-shaped cut-and-raised tongue piece 7 is struck with a hammer or the like along the length direction of the rod-shaped main body 1 with a hammer or the like to be further bent at the intermediate bent portion, and the cut-and-raised tongue piece 8 is caused to bite into the thread groove in the screw shaft portion 24 a of the separator 24, and the separator 24 is fixed to the rod-shaped main body 1. Since the separator 24 is now attached to the plate member 23, the concrete formwork is joined to the other end screw shaft portion of the separator 24 as usual.

  Of the parallel plate portions 1b and 1c of the belt-like plate, the U-shaped portion formed by the free end portion of the plate portion 1b on the side close to the wedge driving hole 21 has been shortened, but the side constituting the wedge plate receiving portion 22 The same length as the U-shaped portion formed by the free end portion of the plate portion 1c, and a notch recess in which the outer side 4a of the wedge plate 4 is loosely fitted from the edge of the plate portion 1b of the U-shaped portion is formed. Also good. In this case, since the outer side 4a of the wedge plate 4 is loosely fitted between both side walls 11a and 11b of the U-shaped portion constituted by the plate portion 1b, both sides of the U-shaped portion constituted by the plate portion 1b. The walls 11a and 11b can also be used to regulate the orientation of the wedge plate 4.

  Further, if a wide band can be used as the strip-shaped plate constituting the rod-shaped main body 1, the space between the side walls 11a and 11b of the U-shaped portion formed by the free end portion of one plate portion 1b (or 1c) ( Or between 12a and 12b), the entire U-shaped portion constituted by the free end portion of the other plate portion 1c (or 1b) is internally fitted, and both side wall portions 11a, 11b and 12a, 12b of each U-shaped portion are Can be configured to overlap each other inside and outside.

  Furthermore, in the said embodiment, the facing direction of the parallel plate parts 1b and 1c of the strip | belt-shaped board which comprises the rod-shaped main body 1 is the same direction as the driving direction of a wedge board (extension direction of the front-end | tip receiving part 16 in the hook part 2). In some cases, the facing direction of the parallel plate portions 1b and 1c may be configured to be orthogonal to the driving direction of the wedge plate.

Fig. A is a cross-sectional plan view showing the state of use, Fig. B is a longitudinal front view at the position of the wedge plate, and Fig. C is a longitudinal front view at the coupling position of the hook portion and the rod-shaped main body. It is a top view of a connection metal fitting. It is a side view of a connection metal fitting. Fig. A is an exploded partially longitudinal side view of the connecting metal fitting, and Fig. B is an exploded partially transverse plan view thereof. Fig. A is an exploded partial cross-sectional plan view of the rod-shaped main body, Fig. B is a cross-sectional view taken along line A-A in Fig. A, and Fig. C is a cross-sectional view taken along line BB in Fig. A. It is a bottom view of a hook part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bar-shaped main body 2 Hook part 3 Separator connection part 4 Wedge board 4a Wedge board outer side 4b Wedge board inner side 5 Nut 13 Square cylindrical end part 14 Through-hole 15 Base pillar part 16 Tip receiving part 18 Groove part 20 Coupling Pin 21 Wedge driving hole 21a Outer end 22 of wedge driving hole Wedge plate receiving portion 22a Edge portion 23 of wedge plate receiving portion Plate material (edge portion of H-shaped steel)
24 Separator

Claims (4)

  On one end side of the rod-shaped main body, a side-shape L-shaped hook portion is provided, which is composed of a base column portion extending in the extending direction of the rod-shaped main body and a tip receiving portion extending from the base column portion at right angles and laterally. A wedge driving hole is provided in the base pillar portion of the hook portion, and a separator connecting portion is provided on the other end side of the rod-shaped main body. A wedge plate to be driven into the wedge driving hole and a tip receiving portion of the hook portion. A separator connecting bracket for sandwiching and fixing a plate material between the hook portions, which is attached to one end portion of the rod-shaped main body at a free end portion of the base column portion, and is opposed to a tip receiving portion of the hook portion. A separator connecting bracket, wherein a wedge plate receiving portion for receiving an outer side of the wedge plate together with an outer end of the wedge driving hole is formed at one end of the rod-shaped main body.   The rod-shaped main body is configured by folding a strip-shaped plate, and a separator connecting portion is constituted by a female screw hole provided at the folded end portion, and the rod-shaped main body length direction at both free ends of the strip-shaped plate A cylindrical end portion is formed, and a groove-shaped portion is provided on the end portion of the base portion of the hook portion so as to be fitted to the cylindrical end portion of the rod-shaped main body. The groove-shaped portion and the tube of the rod-shaped main body are provided. The cylindrical end of the rod-shaped main body is coupled to the cylindrical end of the rod-shaped body together with the outer end of the wedge driving hole, and the direction of the wedge plate is restricted. The separator coupling metal fitting according to claim 1, wherein a wedge plate receiving portion is formed.   Both free end portions of the strip plate constituting the cylindrical end portion of the rod-shaped main body face each other in the wedge plate driving direction, and the wedge plate receiving portion is a free play of the strip plate located on the side far from the wedge driving hole. The separator coupling bracket according to claim 2, wherein the free end portion of the belt-shaped plate that is configured by an end portion and is located on the side close to the wedge driving hole is shortened so as not to interfere with the wedge plate.   The cylindrical end portions of the rod-shaped main body are formed by overlapping U-shaped portions formed on both free end portions of the strip-shaped plate with each other in the wedge plate driving direction. One is formed in a convex shape and the other is formed in a concave shape. Both U-shaped portions are overlapped so that the convex side wall portion and the concave side wall portion are fitted to each other, and both U-shaped portions are parallel to each other. The separator connecting metal fitting according to any one of claims 1 to 3, wherein the connecting pin is configured to penetrate a convex side wall portion.