JP2015048660A - Earth-retaining joint metal fittings and earth-retaining supporting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide earth-retaining joint metal fittings and earth-retaining supporting, which can reduce the number of coupling bolts and the volume of fastening works and can efficiently and economically make temporary construction of earth-retaining supporting.SOLUTION: Earth-retaining joint metal fittings and earth-retaining supporting in this invention consist of a corner brace 5 fitted on the wale 2 side and a taper adjustment member 6 fitted on the strut 3 side. The corner brace 5 and the taper adjustment member 6 are joined to a side face of the wale 2 and to the tip of the strut 3 respectively with a number of coupling bolts 7. The corner brace 5 and the taper adjustment member 6 are connected to each other with a number of coupling bolts 7. The joint surface between the corner brace 5 and the taper adjustment member 6 may constitute a taper form to align the joint part of the wale 2 and the strut 3 to the axial direction of the strut 3 so that water pressure and soil pressure acting on an earth-retaining wall 1 are directed to the axial direction of the strut 3.

Description

  The present invention relates to a fastener for jointing a fastener and a support for temporary fixing using the fastener for the fastener, and the number of joint bolts for joining the fastener and the fastening work can be greatly reduced. Support works can be temporarily and efficiently set up temporarily.

  In building foundations and other underground works, in order to prevent the collapse of earth and sand due to root cutting, as shown in Fig. 10, a retaining wall 20 is temporarily constructed using retaining piles and side sheet piles, and the inside of the retaining wall 20 along with excavation. In order to support the earth pressure and water pressure received by the retaining wall 20, the retaining support 24 is temporarily installed using the uplift 21, the cut beam 22, the fire beam 23 and the like.

  The flank 21 is attached horizontally to the inner wall surface of the retaining wall 20, the cut beam 22 is horizontally bridged between the opposed flank 21 and 21, and the end of each cut beam 23 is joined to the flank 21 Joined with the metal fitting 25 by a plurality of joint bolts

  Further, the fire beam 26 is bridged between the erection 21 and the cut beam 22, and its end is erected and joined to the piercing beam 21 and the cut beam 22, respectively. For these mountain retaining materials, a shape steel such as an H-section steel is mainly used.

  By the way, when temporarily mounting the mountain retaining support 24, the cut beam 22 is erected and bridged at right angles to the axial direction of the 21 so that the earth pressure and water pressure received by the retaining wall 20 are supported only by the axial force of the cut beam 22. can do.

  As a result, the end of the cut beam 22 can be joined to the flank 21 with a relatively simple joint hardware, and joint bolts can be saved significantly. And it can be temporarily set up economically.

  However, in actual building foundations and other underground constructions, depending on the site and the shape of the building to be constructed, it is not necessary to hang the beam diagonally with respect to the axial direction of the erection that is installed on the inner wall surface of the retaining wall. In such a case, the end portion of the cut beam is joined obliquely to the side surface portion of the flank.

Japanese Utility Model Publication No.59-5077 Japanese Utility Model Publication No.58-47085

  However, because the earth pressure and water pressure received by the retaining wall act in the axial direction of the erection in addition to the axial force at the joint between the erection and the beam that is obliquely joined to the erection In addition to the increase in the number of joint bolts, not only the joining operation becomes complicated, but there are also problems such as increased costs.

  Further, since it is necessary to reinforce with a fire beam, not only the number of bolts is increased and the cost is increased, but there is also a problem that it becomes difficult to carry in materials by a crane or the like because the fire beam becomes an obstacle.

  The present invention has been made to solve the above-described problems. By significantly reducing the number of joint bolts and the fastening work of the joint bolts, it has become possible to temporarily mount the timber support work in an extremely efficient and economical manner. An object of the present invention is to provide a metal bracket joint hardware and a mountain support work.

In the present invention, when joining an end of a beam installed obliquely with respect to the axial direction of the erection to the erection installed on the wall surface of the retaining wall, The number of joint bolts and fastening work can be greatly reduced by reducing the shear force in the axial direction of the flank acting on the joint part due to earth pressure and water pressure acting on the retaining wall. Can be temporarily and economically constructed.

  According to the present invention, the fired metal is installed on the flank side, and one or a plurality of taper adjusting members are installed on the beam side, respectively, and the taper adjusting material and an end portion of the beam are erected, The fire metal and the taper adjusting material are joined by a plurality of joint bolts, respectively, and the joint between the raised portion and the cut beam is formed in the axial direction of the cut beam on the joint surface between the fire metal and the taper adjusting material. By providing a taper so as to face, earth pressure and water pressure acting on the mountain retaining wall acted in the axial direction of the beam, so that the uprising and the beam are caused by earth pressure and water pressure acting on the mountain retaining wall. It is possible to reduce the shearing force in the flank axis direction acting on the joint portion.

  As a result, the number of joint bolts can be greatly reduced, and the bolt tightening work can also be greatly reduced, so that the timber support can be set up very easily and economically.

  Also, install one or more taper adjusters on the beam side, install a connection piece between the flank and the fired metal if necessary, and connect the joints between the taper adjusters and the connection piece and fire. Even when joining the end of the cut beam to the bulge by providing a taper so that the joint between the bulge and the cut beam faces the axial direction of the cut beam between the hardware, It is possible to reduce the number of bolts and to easily and economically carry out temporary support construction.

  In addition, by forming a fire metal fixture in the shape of a plane triangle and giving it the function of a fire beam, the number of the original fire beam and joint bolts can be reduced, which makes the pile support work extremely efficient and economical. Temporary.

  In addition, what was formed in H shape, a groove | channel shape, or a rectangular cylinder shape can be used for a fired metal thing, a taper adjustment material, and a connection piece seeing in the axial direction of a flank.

  According to the present invention, a plurality of joint bolts are connected to a bellows installed on a wall surface of a mountain retaining wall at an end of a cut beam which is joined obliquely with respect to the axial direction of the bellows via a fire metal fitting. When joining by means of one or a plurality of taper adjusters at the joint between the erection and the cut beam, the axial direction of the erection acting on the joint due to earth pressure or water pressure acting on the retaining wall The shear force can be reduced. As a result, the number of joint bolts and the fastening work of the joint bolts can be greatly reduced, so that the timber support can be temporarily set up very efficiently and economically.

It is a top view which shows the mountain retaining wall and the mountain retaining support temporarily installed in the side part of the mountain retaining wall. It is a top view which shows the joint part of the belly erection joined to the fired metal thing and the taper adjustment material, and a cut beam edge part. It is a top view which shows the coupling | joint part of the raising part joined to a fired metal thing and two taper adjustment materials, and a cut beam end part. It is a top view which shows the coupling | joint part of the belly raising joined to the fired metal thing and the connection piece, and a cut beam end part. It is a top view which shows the coupling | joint part of the raising part joined to the fired metal thing, the connection piece, and the taper adjustment material, and a beam end part. It is a top view which shows the coupling | joint part of the raising part and the cut beam edge part joined via the fired metal thing, the connection piece, and two taper adjustment materials. (a), (b), (c) is a perspective view of a fired metal object. (a), (b), (c) is a perspective view of a taper adjusting material. (a), (b), (c) is a perspective view of a connection piece. It is a top view which shows the conventional mountain retaining support temporarily installed in the side wall of the mountain retaining wall and the mountain retaining wall.

  1 to 9 show an embodiment of the present invention. In FIG. 1, a mountain retaining wall 1 is constructed using a plurality of mountain retaining piles and cross-sheet piles. By installing the cross beam 3, the mountain retaining support 4 is temporarily installed.

  The flank 2 is attached horizontally to each inner wall of the retaining wall 1, the beam 3 is stretched horizontally between the opposite bulges 2, 2, and the end of each beam 3 is flared It is joined to the side surface portion of the bush 2. In addition, a shape steel such as an H-shaped steel is used for the erection 2 and the cut beam 3.

  As shown in FIGS. 2 and 3, the end of each beam 3 is joined by a plurality of joint bolts 7 to the side surface of the flank 2 via a fire metal 5 and one or more taper adjusting members 6. Yes.

  The fire metal 5 is erected and installed on the side 2, and the taper adjusting material 6 is installed on the beam 3 side.

  Further, as shown in FIG. 7 (a), the flame metal object 5 is formed in an H shape with the lower flange 5a and the upper flange 5b and the web 5c being integrated with each other when viewed in the axial direction of the two. . Further, it is formed in a flat trapezoidal shape with its flank as viewed from directly above and the bottom side of the 2 side.

  Further, the lower flange 5a and the upper flange 5b are formed in parallel with the axial direction of the flank 2, and a plurality of bolt holes 5d for allowing the joint bolts 7 to pass through the lower flange 5a and the upper flange 5b are formed.

  The lower flange 5a is abutted against the flange 2a of the flank 2 and is bolted to the flange 2a by a plurality of joint bolts 7 penetrating the bolt holes 5d.

  The upper flange 5b is in contact with the lower flange 6a of the taper adjusting member 6 and is bolted to the lower flange 6a by a plurality of joint bolts 7 penetrating the bolt holes 5d, 6d.

  7 (b) and 7 (c) show modified examples of the fired metal object 5, and among these, the fired metal object 5 shown in FIG. The lower flange 5a, the upper flange 5b, and the web 5c are integrally formed in a groove shape.

  Further, the lower flange 5a and the upper flange 5b are formed in parallel with the axial direction of the flank 2, and a plurality of bolt holes 5d for allowing the joint bolts 7 to pass through the lower flange 5a and the upper flange 5b are formed.

  The lower flange 5a is abutted against the flange 2a of the flank 2 and is bolted to the flange 2a by a plurality of joint bolts 7 penetrating the bolt holes 5d.

  The upper flange 5b is in contact with the lower flange 6a of the taper adjusting member 6 and is bolted to the lower flange 6a by a plurality of joint bolts 7 penetrating the bolt holes 5d and 6d.

  7 (c) is a flat rectangular cylinder in which the lower flange 5a, the upper flange 5b and the two webs 5c are integrated with each other when viewed in the axial direction of the flank 2 Has been. Further, it is formed in a flat trapezoidal shape with its flank as viewed from directly above and the bottom side of the 2 side.

  Further, the lower flange 5a and the upper flange 5b are formed in parallel with the axial direction of the flank 2, and a plurality of bolt holes 5d for allowing the joint bolts 7 to pass through the lower flange 5a and the upper flange 5b are formed.

  The lower flange 5a is abutted against the flange 2a of the flank 2 and is bolted to the flange 2a by a plurality of joint bolts 7 penetrating the bolt holes 5d. The upper flange 5b is in contact with the lower flange 6a of the taper adjusting member 6 and is bolted to the lower flange 6a by a plurality of joint bolts 7 penetrating the bolt holes 5d and 6d.

  As shown in FIG. 8 (a), the taper adjusting member 6 is formed in an H shape by integrally forming the lower flange 6a, the upper flange 6b and the web 6c when viewed in the axial direction of the flank 2 and directly above. It is formed in a substantially rectangular shape when viewed more.

  Further, the lower flange 6a is formed parallel to the axial direction of the flank 2, and the upper flange 6b is formed slightly oblique (inclination of about 3 °) with respect to the axial direction of the flank 2. In addition, a plurality of bolt holes 6d through which the joint bolts 7 are passed are formed in the lower flange 6a and the upper flange 6b.

  The lower flange 6a is brought into contact with the upper flange 5b of the fired metal article 5, and is bolted to the upper flange 5b by a plurality of joint bolts 7 penetrating the bolt holes 5d and 6d.

  The upper flange 6b is bolted to the end plate 8 attached to the end portion of the cut beam 3 by a plurality of joint bolts 7 penetrating the bolt holes 6d.

  When a plurality of taper adjusting members 6 are installed, as shown in FIG. 3, the taper adjusting members 6 are stacked on the beam 3 side, and both the lower flange 6a and the upper flange 6b have bolt holes 6d. It joins by bolting with the several joint bolt 7 which penetrates.

  8 (b) and 8 (c) show modified examples of the taper adjusting member 6. Of these, the taper adjusting member 6 shown in FIG. 6a, the upper flange 6b and the web 6c are integrally formed in a groove shape.

  Further, the lower flange 6a is formed parallel to the axial direction of the flank 2, and the upper flange 6b is formed slightly oblique (inclination of about 3 °) with respect to the axial direction of the flank 2. In addition, a plurality of bolt holes 6d through which the joint bolts 7 are passed are formed in the lower flange 6a and the upper flange 6b.

  The lower flange 6a is brought into contact with the upper flange 5b of the fired metal article 5, and is bolted to the upper flange 5b by a plurality of joint bolts 7 penetrating the bolt holes 5d and 6d.

  Further, the upper flange 6b is joined to the end plate 8 attached to the end of the cut beam 3 by a plurality of joint bolts 7 penetrating the bolt holes 6d.

  The taper adjusting member 6 shown in FIG. 8 (c) is formed in a rectangular cylindrical shape by integrally viewing the lower flange 6a and the upper flange 6b and the two webs 6c when viewed in the axial direction of the protuberance 2. Yes.

  Further, the lower flange 6a is formed parallel to the axial direction of the flank 2, and the upper flange 6b is formed slightly oblique (inclination of about 3 °) with respect to the axial direction of the flank 2. In addition, a plurality of bolt holes 6d through which the joint bolts 7 are passed are formed in the lower flange 6a and the upper flange 6b.

  The lower flange 6a is brought into contact with the upper flange 5b of the fired metal article 5, and is bolted to the upper flange 5b by a plurality of joint bolts 7 penetrating the bolt holes 5d and 6d.

  Further, the upper flange 6b is joined to the end plate 8 attached to the end of the cut beam 3 by a plurality of joint bolts 7 penetrating the bolt holes 6d.

  In any of the taper adjusting members 6 shown in FIGS. 8 (a), (b), and (c), one or a plurality of reinforcing ribs (as required) are provided between the lower flange 6a and the upper flange 6b. By attaching (indicated by a broken line in FIGS. 4 to 6), it is reinforced against stress acting in the axial direction of the beam 3.

  With the above configuration, the end portion of each beam 3 can be firmly joined to the side surface portion of the flank 2 by the plurality of joint bolts 7 via the fired metal 5 and one or a plurality of taper adjusting members 6.

  Further, even when the end of the cut beam 3 has to be obliquely joined to the side surface of the erection 2, one or a plurality of taper adjusting members 6 are interposed between the erection 2 and the beam 3. Then, the earth pressure and water pressure acting on the erection 2 via the mountain retaining wall 1 are made as much as possible by making the joint portion between the erection 2 and the beam 3 face the axial direction of the beam 3. It can be supported as an axial force acting on the cutting beam 3.

  Thereby, the shear force of the flank axial direction generated between the flank 2 and the cut beam 3 can be reduced, and the number of joint bolts 7 can be reduced.

  In particular, through the plurality of taper adjusting members 6, the joint portion between the protuberance 2 and the cut beam 3 can be directed in the axial direction of the cut beam 3 in a more gentle shape, and the generation of shearing force can be further increased. Can be reduced.

  FIG. 2 shows a state in which the end portion of the cut beam 3 is erected and joined to the side surface portion of the angling member 2 while being inclined in the horizontal direction by about 3 ° with respect to the axial direction of the erection 2.

  In this case, the end portion of the cut beam 3 is joined to the side surface portion of the erection 2 by a plurality of joint bolts 7 via a fire metal 5 and one taper adjusting material 6.

  FIG. 3 shows a state in which the end portion of the cut beam 3 is erected and joined to the side surface of the angling member 2 while being inclined in the horizontal direction by about 6 ° with respect to the axial direction of the erection 2.

  In this case, the end portion of the cut beam 3 is joined to the side surface portion of the erection 2 by a plurality of joint bolts 7 via a fire metal 5 and two taper adjusting members 6.

  FIG. 4 shows another embodiment of the present invention, in which the end of each beam 3 is erected and the side surface of 2 is provided with a metal fitting 5 and a connection piece 9 by a plurality of joint bolts 7. It is joined.

  The adjustment piece 9 is erected and installed on the 2 side, and the fired metal 5 is installed on the cutting beam 3 side.

  The connecting piece 9 is formed in an H shape with the lower flange 9a and the upper flange 9b and the web 9c being integrated with each other when viewed in the axial direction of the flank 2. Further, the lower flange 9a is formed parallel to the axial direction of the flank 2, and the entire upper flange 9b is flared except for a part on one end side, and is slightly inclined with respect to the axial direction of the 2 (inclination of about 9 °). ). Further, a plurality of bolt holes 9d for allowing the joint bolts 7 to pass therethrough are formed in the lower flange 9a and the upper flange 9b.

  The lower flange 9a is abutted against the flange 2a of the flank 2 and is bolted to the lower flange 2a by a plurality of joint bolts 7 penetrating the bolt holes 9d. Further, the upper flange 9b is joined to the lower flange 5a of the metal brace 5 by a plurality of joint bolts 7 penetrating both bolt holes 5d and 9d.

  The fire metal 5 is as described above (see FIGS. 2, 3, and 7). In particular, the upper flange 5b is a plurality of joints that penetrate the bolt hole 5d through the end plate 8 attached to the end of the cut beam 3. They are joined by bolts 7.

  9 (b) and 9 (c) show a modified example of the connection piece 9. Of these, the connection piece 9 shown in FIG. 9 (b) has a lower flange 9a and The upper flange 9b and the web 9c are integrally formed in a groove shape.

  Further, the lower flange 9a is erected and formed in parallel with the axial direction of the two, and the upper flange 9b is erected entirely except for a part on one end side and is slightly inclined (about 9 °) with respect to the axial direction of the two. Slope). In addition, a plurality of bolt holes 9d through which the joint bolts 7 are passed are formed in the lower flange 9a and the upper flange 9b.

  The lower flange 9a is abutted against the flange 2a of the flank 2 and is bolted to the flange 2a by a plurality of joint bolts 7 penetrating the bolt holes 9d.

  Further, the upper flange 9b is joined to the lower flange 5a of the metal brace 5 by a plurality of joint bolts 7 penetrating both bolt holes 9a, 5a.

  The connection piece 9 shown in FIG. 9 (c) is formed in the shape of a rectangular cylinder with the lower flange 9a and the upper flange 9b and the two webs 9c integrally formed when viewed in the axial direction of the flank 2. .

  Further, the lower flange 9a is formed parallel to the axial direction of the flank 2, and the upper flange 9b is formed slightly oblique (inclination of about 9 °) with respect to the axial direction of the flank 2. In addition, a plurality of bolt holes 9d through which the joint bolts 7 are passed are formed in the lower flange 9a and the upper flange 9b.

  The lower flange 9a is abutted against the flange 2a of the flank 2 and is bolted to the flange 2a by a plurality of joint bolts 7 penetrating the bolt holes 9d. Further, the upper flange 9b is joined to the lower flange 5a of the metal brace 5 by a plurality of joint bolts 7 penetrating the bolt holes 5d.

  With the above configuration, the end portion of each beam 3 can be firmly joined to the side surface portion of the flank 2 by the plurality of joint bolts 7 via the fire metal 5 and the connection piece 9.

  Further, even when the cut beam 3 has to be obliquely joined to the erection 2, the connection piece 9 is interposed between the erection 2 and the kerf 3 and the erection 2 is cut. By making the joint with the beam 3 face the axial direction of the cut beam 3, the earth pressure and water pressure acting on the erection 2 via the retaining wall 1 are applied to the cut beam 3 as much as possible. It can be supported as a force.

  As a result, the generated shear force acting between the erection 2 and the cut beam 3 and acting in the axial direction of the erection 2 can be reduced, and the number of joint bolts 7 can be reduced.

  FIG. 4 shows a state in which the end portion of the cut beam 3 is erected and joined to the side surface of the angling member 2 while being inclined in the horizontal direction by about 9 ° with respect to the axial direction of the erection 2.

  In this case, the end portion of the cut beam 3 is joined to the side surface portion of the erection 2 by a plurality of joint bolts 7 via the fired metal 5 and one connection piece 9.

  FIGS. 5 and 6 also show another embodiment of the present invention, in which the end portion of each beam 3 is erected, and a fire metal 5 and one or a plurality of taper adjusting members 6 are formed on the side surface of 2. Are joined by a plurality of joint bolts 7 via an adjustment piece 9.

  The adjustment piece 9 is installed on the flank 2 side, the one or more taper adjustment members 6 are installed on the beam 3 side, and the fire metal 5 is installed between the connection piece 9 and the taper adjustment member 6. ing.

  The structure of the fired metal object 5, the taper adjusting material 6 and the connection piece 9 and the joining method of the members are as described above.

  FIG. 5 shows a state in which the end portion of the cut beam 3 is erected and joined to the side surface of the angling member 2 while being inclined in the horizontal direction by about 12 ° with respect to the axial direction of the erection 2.

  In this case, the end portion of the cut beam 3 is joined to the side surface portion of the erection 2 by a plurality of joint bolts 7 through a fired metal object 5, one taper adjusting member 6 and one connection piece 9.

  Further, FIG. 6 shows a state in which the end portion of the cut beam 3 is erected and joined to the side surface portion of the angulation 2 while being inclined in the horizontal direction by about 15 ° with respect to the axial direction of the erection 2.

  In this case, the end portion of the cut beam 3 is joined to the side surface portion of the erection 2 by a plurality of joint bolts 7 via a fired metal object 5, two taper adjusting members 6 and one connection piece 9.

  According to the present invention, the number of joint bolts used can be greatly reduced, and a mountain retaining support can be temporarily and efficiently installed.

DESCRIPTION OF SYMBOLS 1 Retaining wall 2 Raising 3 Cut beam 4 Retaining support 5 Fire metal 6 Taper adjustment material 7 Joint bolt 8 End plate 9 Connection piece

Claims (6)

  A metal fitting joint fitting for joining the end of a cut beam installed obliquely with respect to the axial direction of the erection to the erection installed on the wall surface of the retaining wall, the erection side And a taper adjusting material installed on the cut beam side, the fire metal in the upset, the taper adjusting material at the end of the beam, and the fire metal And the taper adjusting material are each joined by a plurality of joint bolts, and taper so that the joint portion of the raised beam and the cut beam faces the axial direction of the cut beam. The earth retaining material joint hardware which is comprised so that the earth pressure and water pressure which act on the said retaining wall may act in the axial direction of the said cross beam by providing.   2. A metal fitting for jointing fasteners according to claim 1, wherein a plurality of taper adjusting members are installed on the beam side, the taper adjusting members are joined together by a plurality of joint bolts, and the taper adjusting members are erected on the joining surfaces of the taper adjusting members. By providing a taper so that the joint portion between the beam and the cut beam is oriented in the axial direction of the cut beam, earth pressure and water pressure acting on the retaining wall are configured to act in the axial direction of the cut beam. A metal fitting fitting for a mountain retaining material, characterized by having   3. The mountain-clamping joint fitting according to claim 1 or 2, wherein a connection piece is installed between the flank and the fire metal fitting, the connection piece and the bulge and the fire metal fitting are joined by a plurality of joint bolts, and By providing a taper on the joint surface between the metal piece and the connection piece so that the joint between the raised portion and the cut beam faces the axial direction of the cut beam, earth pressure and water pressure acting on the mountain retaining wall are A metal fitting for jointing a fastener, which is configured to act in the axial direction of a cut beam.   The fastener for fittings according to any one of claims 1 to 3, wherein the taper adjusting member is formed in an H shape, a groove shape or a rectangular tube shape in the axial direction of the flank. Metal fittings hardware.   An upright raised on the wall of the retaining wall, a cut beam installed obliquely with respect to the axial direction of the raised wall, and a metal fitting joint fitting for joining the end of the cut beam to the raised wall The above-mentioned pile fastening metal fitting is composed of a fire metal fitting installed on the flank side and a taper adjusting material installed on the kerf side, The taper adjusting material is bonded to the end of the beam, and the fired metal and the taper adjusting material are joined to each other by a plurality of joint bolts. By providing a taper so that the joint portion with the beam faces the axial direction of the cut beam, earth pressure or water pressure acting on the retaining wall is configured to act in the axial direction of the cut beam. A featured mountain retaining support.   6. The support structure according to claim 5, wherein a plurality of taper adjusting members are installed on the beam side, the taper adjusting members are joined together by a plurality of joint bolts, and erected on a joint surface between the taper adjusting members. By providing a taper so that the joint portion between the beam and the beam is oriented in the axial direction of the beam, earth pressure and water pressure acting on the mountain retaining wall are configured to act in the axial direction of the beam. This is a mountain retaining support.

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