JP6574399B2 - Connecting material mounting structure - Google Patents

Description

  The present invention relates to a mounting structure for connecting materials for connecting parallel beam members, for example, both ends of a connecting material installed between lining support girders that support a lining plate used in road construction or pier construction. It is used to mount the bracket on the lining support girder, so that both ends of the connecting material can be easily fixed and removed on the lining receiving girder without using welding or stiffening stiffeners. is there.

  In this case, the connecting material is a side-down buckling prevention material that prevents the lining receiving girders from buckling sideways, and by connecting adjacent lining receiving girders with the side-falling buckling prevention material, It is possible to prevent buckling of the lining receiving girders.

  In road construction and pier construction, temporarily cover the road surface by temporarily installing road linings, work platforms, boarding piers, etc. so that underground work under the road does not hinder traffic for ordinary vehicles and pedestrians. May work.

  For example, a road surface covering temporarily installed in road construction is composed of an upper work (road surface) through which ordinary vehicles and pedestrians pass, and a lower work that supports the upper work. Of these, the upper work is shown in FIGS. 7 and 8. As shown in Fig. 1, a girder 21 is installed between the upper ends of the gantry support piles 20, 20, and a plurality of lining receiving girders 22 are installed in parallel between the girder 21, 21 and further lining is performed in parallel. It is constructed by laying a plurality of lining plates 23 on the receiving girders 22,22.

  H-shaped steel is mainly used for the lining support girder 22 and is laid in parallel at regular intervals in the material axis direction of the girder 21. In addition, because the lining support girder 22 is subject to an excessive load and may fall sideways and buckle, a sideways buckling prevention material (horizontal joint material) 24 is installed between the lining support girder 22 and 22 in parallel. Is done.

  As the side-falling buckling prevention member 24, grooved steel or the like is mainly used, and it is installed in the beam forming of the parallel lining receiving girders 22,22. Then, the end portions of the respective side-falling buckling prevention members 24 are joined to the stiffeners 25 attached to the side portions of the lining receiving girders 22 by welding with the joining bolts 26.

  In such a configuration, the equipment and materials necessary for underground work under the superstructure (road surface) or the excavation soil are temporarily removed by temporarily covering the lining plate 23 and part of the buckling prevention material 24. It is removed by using a crane or the like from above.

Japanese Patent Laying-Open No. 2015-067978 Japanese Patent Laid-Open No. 2015-0212824

  However, since both ends of the side-down buckling prevention material 24 are joined to the side part of the lining receiving girder 22 by the stiffener 25 and the joining bolt 26 as described above, the end portions of the side-down buckling prevention material 24 It was very troublesome to fix and remove it from the side of the lining receiving girder 22.

  In addition, installation work such as a working scaffold, an aerial work vehicle, and a crash prevention curing for that purpose was very troublesome. Furthermore, a large amount of stiffening material scrap such as side-buckling prevention material (transverse joint material) 24 and stiffener 25 is generated, and there is a problem that an extra cost is required for the processing.

  The present invention has been made in order to solve the above-described problems, and has a connecting member mounting structure in which both ends of a connecting member installed between parallel beam members can be easily fixed and removed from the beam member. Is intended to provide.

  The present invention is an invention of an attachment structure of a connecting material that is installed in a state in which both ends are installed between upper flanges of parallel beam members, and connects the beam members to each other. A press fitting that is slidably slidable on the connecting member, a reaction force receiver that is fixed to the lower surface of the connecting member on the opposite side of the beam member with respect to the press fitting, and between the reaction force receiver and the press fitting And a wedge which is slidable to the beam member side to press the upper flange of the beam member.

  In the present invention, for example, when a road surface lining is temporarily installed, a connection constructed between the parallel beam members (hereinafter referred to as `` lining lining girders '') for the purpose of preventing side lining buckling of the lining receiving girders. Both ends of the material (hereinafter referred to as `` side-down buckling prevention material '') can be fixed detachably with a single wedge without using welding or stiffening stiffeners on the lining support beam. It is easy to install and remove buckling buckling prevention materials, which makes it easy to carry in and out equipment and materials necessary for underground work under the superstructure (road surface) and carry out excavated soil. Can be achieved.

  In addition, a bolt through hole is formed in the side portion of the wedge, a support nut is attached to the lateral buckling prevention material, and a wedge pushing bolt that is threaded into the support nut through the bolt through hole is attached. Thus, the wedge can be easily and reliably inserted between the reaction force receiver and the pressing fitting, and the wedge can be easily extracted.

  Furthermore, by attaching a guide for inserting the wedge vertically, the wedge can be more reliably inserted between the reaction force receiver and the pressing fitting. In addition, a side-down buckling prevention material can be formed from a square steel pipe or H-section steel. In addition, the means for fixing both ends of the lining plate to the upper flange of the lining receiving girder is not particularly limited, but if a fixing bracket having a tightening means is used, it can be easily joined in the field work and easily removed. Become. Further, as shown in FIG. 6, the connecting member mounting structure of the present invention can also be applied to the case where the lining plate is mounted on the lining receiving girder.

  In the present invention, the both ends of the connecting member that is installed between the parallel beam members and connects the beam members can be detachably mounted on the beam member with a wedge, so that the road surface covering is temporarily installed. In this case, weld or stiffen both ends of the side-down buckling prevention material that is installed to prevent side-buckling of the lining support beam between the parallel lining support beams. Even without using a stiffener, it can be easily fixed and removed with a single wedge, which makes it easy to carry in and out equipment and materials necessary for underground work under the superstructure (road surface) and carry out excavated soil. Work efficiency can be improved.

  In addition, insertion and extraction of the wedge between the reaction force receiver and the pressing bracket can be done with the wedge pushing bolt from above the buckling prevention material, so there is no need to install a work scaffold or fall prevention curing In addition, since a large amount of scrap of stiffeners such as side-buckling prevention materials (horizontal joint materials) and stiffeners does not occur, there is no additional cost for the processing.

Fig. 1 (a) is a side view of a side-down buckling prevention material made of a square steel pipe, Fig. 1 (b) is a side view of a side-down buckling prevention material installed between parallel lining support girders, Fig. 1 (c) is a side view of a lateral buckling prevention material fixed on a lining receiving girder, and FIG. 1 (d) is a cross-sectional view taken along the line II in FIG. 1 (c). 2 (a) and 2 (b) are enlarged views of the portion B in FIG. 1 (c), and FIG. 2 (c) is an enlarged perspective view of the portion C in FIG. 2 (b). 3 (a) is a sectional view taken along the line of FIG. 2 (a), and FIG. 3 (b) is a sectional view taken along the line of the hoe in FIG. 2 (a). FIG. 4 shows another embodiment of the present invention. FIGS. 4 (a) and 4 (b) are enlarged views of FIG. 1 (c), and FIG. 4 (c) is FIG. FIG. FIG. 5 (a) is a cross-sectional view taken along the line H-G in FIG. 4 (a), and FIG. 5 (b) is a cross-sectional view taken along the line Gt in FIG. 4 (a). 6 (a) and 6 (b) illustrate an embodiment in which the present invention is applied to a lining plate, and are sectional views of the lining plate. Fig. 7 (a) is a schematic diagram seen from the direction perpendicular to the girder direction of the lining support girder, and Fig. 7 (b) is the main part of it. It is an enlarged view. FIG. 8A is a diagram corresponding to FIG. 7, FIG. 8A is a schematic diagram viewed from the girder direction of the lining support girder, and FIG. 8B is an enlarged view of the main part thereof.

  Hereinafter, specific embodiments of the present invention will be described. However, the present invention is not limited to the embodiments described below.

  A plurality of side-to-side buckling prevention materials 2 and a lining plate 3 are installed in a state where both ends are laid between the upper flanges 1a and 1a of the lining receiving girders 1 and 1 in parallel.

  The lining receiving girder 1 is formed from H-section steel. Further, the side-falling buckling prevention material 2 is a beam material for preventing the side-falling buckling of the lining receiving girder 1 by connecting adjacent lining receiving girders 1 and is formed of a square steel pipe and covered. It is installed in parallel at regular intervals in the material axis direction of the work beam 1.

  The lining plate 3 is installed in the same direction as the side-to-side buckling prevention material 2 between the adjacent side-to-side buckling prevention materials 2 and 2.

  A rectangular long hole 4 that is long in the axial direction of the side-falling buckling prevention material 2 is formed at both ends of the lower flange 2 a of each side-falling buckling prevention material 2, and a press fitting 5 is placed in the long hole 4. The side-down buckling prevention material 2 is vertically suspended so as to be movable in the material axis direction.

  Further, a reaction force receiver 6 is attached to the lower side of the lower flange 2a of the side-down buckling prevention material 2 on the opposite side of the lining receiving girder 1 with respect to the pressing metal 5 and the reaction force receiver 6 and the pressing metal 5 A wedge 7 for moving the pressing metal 5 to the lining receiving girder 1 is inserted in between.

  Furthermore, a guide 8 for vertically guiding the wedge 7 on the opposite side and both sides of the lining receiving girder 1 with respect to the wedge 7 is attached to the upper side of the lower flange 2a of the side-down buckling prevention material 2.

  The press fitting 5 is provided below the long hole 4 through the horizontal part 5a disposed on the lower flange 2a of the sideways buckling prevention material 2 and the long hole 4 from below the horizontal part 5a. The vertical portion 5b is formed integrally with the stoppers 5c and 5c protruding symmetrically on both sides of the vertical portion 5b.

  The horizontal portion 5a is formed in a plate shape, and the width in the lateral direction (the direction perpendicular to the material axis of the lateral buckling prevention material 2) is the lateral direction of the long hole 4 (the direction perpendicular to the material axis of the lateral collapse buckling prevention material 2). ) Width.

  As a result, as long as the horizontal portion 5a is arranged in a direction substantially orthogonal to the long axis direction of the long hole 4, the pressing metal fitting 5 extends between the horizontal portion 5a and the left and right detents 5c, 5c in the long axis direction of the long hole 4. The right and left edge ends are not engaged and detached from the long hole 4.

  Further, a T-shaped slit 9 is formed in the horizontal portion 5a so as to communicate with the elongated hole 4 on the opposite side of the lining receiving beam 1 with respect to the vertical portion 5b. The T-shaped slit 9 is formed in a T shape in a plan view from a horizontal slit 9a having a long axis in the horizontal direction of the horizontal portion 5a and a vertical slit 9b having a long axis in the vertical direction of the horizontal portion 5a. The end is released to the wedge 7 side (see FIG. 2 (c)).

  The vertical portion 5b is formed in a rectangular block shape that is wide in the vertical direction of the horizontal portion 5a (the direction of the material axis of the lateral buckling prevention material 2), and the end portion 5d on the reaction force receiver 6 side of the vertical portion 5b is below As shown in FIG. 2, it is formed obliquely so as to gradually rise toward the reaction force receiver 6 (see FIG. 2).

  Further, an L-shaped lifting prevention hook 5e that engages with an edge of the upper flange 1a of the lining receiving beam 1 is formed at the end of the vertical portion 5b on the lining receiving beam 1 side.

    The wedge 7 is inserted between the pressing metal 5 and the reaction force receiver 6, thereby moving the pressing metal 5 toward the lining receiving beam 1 and moving the vertical portion 5 a to the upper flange 1 a of the lining receiving beam 1. It is a member for pressing strongly against the edge part of.

  An end portion 7a of the wedge 7 on the reaction force receiver 6 side is formed vertically along the side surface of the reaction force receiver 6, and an end portion 7b of the wedge 7 on the pressing metal 5 side is an end portion 5d of the vertical portion 5b. Is formed obliquely along. Further, T-shaped ribs 7b penetrating the T-shaped slit 9 are continuously formed in the upper and lower diagonal directions at the end on the pressing metal 5 side. The wedge 7 is detachably inserted between the pressing metal 5 and the reaction force receiver 6.

  In such a configuration, by pressing the wedge 7 between the pressing metal 5 and the reaction force receiver 6, the pressing metal 5 is pushed by the wedge 7 and moves toward the lining receiving beam 1, and the lining receiving beam 1 By strongly pressing the edge of the upper flange 1a of 1, the end of the side-to-side buckling prevention material 2 is fixed on the lining receiving beam 1. Further, the L-shaped anti-lifting hook 5e engages with the edge of the upper flange 1a of the lining support beam 1 so that the side-falling buckling prevention material 2 is prevented from rising.

  Furthermore, since the pressing metal fittings 5 are attached to both ends of the side-down buckling prevention material 2 in the material axial direction, the pressing metal fittings 5 and 5 at both ends strongly press the upper flange 1a of the lining receiving beam 1 respectively. By doing so, the side-to-side buckling prevention material 2 is strongly fixed between the parallel lining receiving beams 1 and 1.

  In order to insert the wedge 7 between the press fitting 5 and the reaction force receiver 6 and to remove the wedge 7 from between the press fitting 5 and the reaction force receiver 6, it is formed on the upper flange of the buckling prevention material 2. Inserted into the opening 2b is a rod-shaped jig 10 whose upper end is T-shaped as shown in FIGS. 1 (c), (d) and FIGS. 2 (a), (b), and through the rod-shaped jig 10. Then hit the wedge 7 with a hammer.

  More specifically, the rod-shaped jig 10 is connected to the upper end of the wedge 7 and the wedge 7 is easily inserted between the pressing metal 5 and the reaction force receiver 6 by hitting the upper end of the rod-shaped jig 10 from above with a hammer. can do. Further, the wedge 7 can be easily removed by hitting the upper end of the rod-shaped jig 10 upward.

  If the upper end of the wedge 7 and the lower end of the rod-shaped jig 10 are formed with a male screw and a screw hole 11 that are screwed together, the rod-shaped jig 10 can be detachably connected to the wedge 7.

  By pulling out the wedge 7, the pressing metal 5 is pulled toward the wedge 7, and the hook 5 e at the tip is detached from the edge of the upper flange 1 a of the lining support girder 1. Can be removed from the lining receiving girder 1.

  In addition, the edge part of the side-falling buckling prevention material 2 constructed on the upper flange 1a of the outermost lining support girder 1 among the several lining lining girder in parallel is illustrated in FIG. In this manner, the lining support girder 1 is fixed on the upper flange 1a of the lining support beam 1 by a pressing metal 5 and further fixed by a fixing metal 12 and an angle piece 13.

  To explain, the hook 12a formed on one end side of the fixing metal 12 is locked to the outer edge of the upper flange 1a of the lining support girder 1, and the flange 12b formed on the other end side is prevented from falling down and buckling. The angle piece 13 attached to the end of the material 2 is bolted by a fixing bolt 14.

  With the above configuration, among the plurality of parallel lining support girders, the end portions of the respective lateral buckling prevention materials 2 laid on the upper flange 1a of the lining support girder 1 positioned on the outermost side are as follows: It is fixed on the lining receiving beam 1.

  Although not particularly shown, the side-buckling buckling prevention material 1 adjacent in the material axis direction is abutted against each other on the upper flange 1a of the lining support girder 1 and attached to both ends. The plates are connected to each other by fastening them with fastening bolts.

  4 and 5 show another embodiment of the present invention. In particular, the wedge 7 can be easily inserted and pulled out by a wedge insertion bolt.

  Explaining, the wedge insertion bolt 15 is vertically attached to the end of the wedge 7 on the reaction force receiving 6 side. The wedge insertion bolt 15 passes through the horizontal bracket 7c horizontally projecting from the end portion 7a on the reaction force receiver 6 side of the wedge 7 and the lower flange 2a of the side-falling buckling prevention member 2, and the lower flange 2a Screwed into a support nut 16 attached to the lower side. The horizontal bracket 7c and the lower flange 2a are formed with through holes (not shown) through which the wedge insertion bolts 15 pass.

  In such a configuration, by tightening the wedge insertion bolt 15 and pushing the wedge 7 between the pressing metal 5 and the reaction force receiver 6, the pressing metal 5 is pressed by the wedge 7 to the lining receiving beam 1 side. It moves and presses the edge part of the upper flange 1a of the lining receiving girder 1 strongly.

  Further, the pressing metal fittings 5 are attached to both ends of the side-down buckling prevention material 2 in the axial direction so that the pressing metal fittings 5 and 5 at both ends strongly press the upper flange 1a of the lining support beam 1 respectively. By doing so, the side-to-side buckling prevention material 2 is strongly fixed between the parallel lining receiving beams 1 and 1.

  In order to remove the end portion of the side-falling buckling prevention member 2 from the lining support beam 1, the wedge insertion bolt 15 is loosened and the wedge 7 is pulled out from between the pressing metal 5 and the reaction force receiver 6. By pulling out the wedge 7, the pressing metal 5 is drawn toward the wedge 7, and the hook 5 e at the tip is disengaged from the edge of the upper flange 1 a of the lining support girder 1. It can be removed from the lining receiving beam 1. Note that the wedge insertion bolt 15 can be tightened or loosened by inserting a wrench 19 into the opening 2b formed in the upper flange 2 of the sideways buckling prevention material 2.

  6 (a) and 6 (b) illustrate an example in which the structure for mounting a buckling buckling material according to the present invention is applied to a lining plate, and H-section steel 17 constituting the lining plate 3 is shown. A rectangular long hole (not shown) is formed in the lower flange 17a, and the press fitting 5 is suspended in the long hole so as to be movable in the direction of the material axis of the H-section steel 17. The long hole is formed by cutting out both edge portions in a rectangular shape between the lower flanges 17a and 17a of the adjacent H-shaped steel 17.

  A reaction force receiver (not shown) is attached to the lower side of the lower flange 17a of the H-shaped steel 17 on the opposite side of the lining receiving girder 1 with respect to the pressing metal 5, and the reaction force receiver and the pressing metal 5 A wedge 7 for moving the pressing metal 5 to the lining receiving girder 1 is inserted in between.

  Further, on the upper side of the lower flange 17 a of the H-shaped steel 17, a guide 8 for vertically guiding the wedge 7 is attached to the opposite side and both sides of the lining receiving girder 1 with respect to the wedge 7. A wedge insertion bolt 15 is vertically attached to the end of the wedge 7 on the reaction force receiving side.

  The configuration and operation of the pressing metal 5, the reaction force receiver, the wedge 7, the guide 8, and the wedge insertion bolt 15 are as described in the embodiment of FIGS.

  The lining plate 3 has a plurality of H-section steels 17 arranged side by side in a direction orthogonal to the material axis direction of the lining support girder 1, and the upper and lower flanges of the adjacent H-section steels 17 and 17 are welded together. In addition, both sides and both ends are reinforced by flat steel plates 18 so as to be integrally formed in a rectangular plate shape.

  In particular, FIG. 6 (a) shows a lining plate made of two H-shaped steels, and FIG. 6 (b) shows a lining plate made of four H-shaped steels.

  The present invention can easily fix and remove the side-buckling buckling prevention material installed between the parallel receiving girders on the lining receiving girders, which is necessary for underground work under the superstructure (road surface). It is possible to carry out the work of carrying in and out of materials and excavating soil very efficiently.

1 Lining girder (beam material)
1a Upper flange of lining receiving girder 2 Side buckling prevention material (connecting material)
2a Lower flange 3 Covering plate 4 Long hole 5 Press fitting
5a Horizontal part
5b Vertical section
5c Stopper
5d hook 6 reaction force receiver 7 wedge 8 guide 9 T-shaped slit
9a Horizontal slit
9b Vertical slit
10 bar jig
11 Male thread or screw hole
12 Fixing bracket
13 Angle piece
14 Fixing bolt
15 Wedge insertion bolt
16 Support nut
17 H-section steel
18 Flat steel plate
19 Wrench

Claims (5)

  Installed in a state where both ends are erected between the upper flanges of the parallel beam members, and in the attachment structure of the connection material for connecting the beam materials, slidably slidably on the beam material side on the lower surface side of the connection material The pressing member, a reaction force receiver fixed to the opposite side of the beam member with respect to the pressing member on the lower surface side of the connecting member, and inserted between the reaction force receiver and the pressing member, A connecting member mounting structure comprising a wedge configured to slide a pressing fitting toward the beam member so as to press the upper flange of the beam member.   2. The connecting member mounting structure according to claim 1, wherein a bolt through hole is provided in a side portion of the wedge, a support nut is provided in the beam member, and the wedge is pushed through the bolt through hole and screwed into the support nut. A connecting material mounting structure, wherein a bolt is attached.   3. The connecting material mounting structure according to claim 1, wherein the connecting material comprises a square steel pipe.   3. The connecting material mounting structure according to claim 1, wherein the connecting material is made of H-shaped steel.   3. The connecting material mounting structure according to claim 1 or 2, wherein the connecting material comprises a lining plate.

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