JPH0676444U - Plane crossing joint for beams - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a joint for facilitating orthogonal crossing of beam beams in the same plane. [Structure] Plane crossing joint for beams is a through hole A in the center of the side surface.
The left and right ends of the rectangular parallelepiped 10 having the are formed in a truncated pyramid shape. Inserted holes B are provided in the pyramidal trapezoidal portions 20 at both ends so as to be orthogonal to each other on the same plane from the end surface toward the through hole A, and the tip of the inserted hole B is a closed end surface at the side surface A1 of the through hole A. There is. The size of the through hole A is set to be the same as the height of the H steel for beam beams in the vertical direction and slightly larger than the width of the H steel in the horizontal direction. The insertion hole B has the same length and height as the H steel. Furthermore, ribs 4 are used as reinforcing materials.
0 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 Concerning the girders to be erected by mountain retaining work in construction and civil engineering, it is particularly easy to cross the girders when constructing the girders.

[0002]

[Prior art]

 Conventionally, in order to build a building having an underground structure such as an underground parking lot, it has been necessary to excavate the ground to a depth corresponding to the scale of the underground structure. At the time of this ground excavation, various mountain retaining methods have been developed as a method of excavating while preventing the ground from collapsing at the excavation site, and are appropriately selected and used according to the scale of excavation. Among various types of mountain retaining methods, the girder type mountain retaining method is widely used in urban areas. This method is to install a reinforced material with a horizontal structure on the inner surface of a mountain retaining wall (usually a sheet pile is provided in the vertical direction) provided on the excavated surface of the ground, and to raise the opposing surface of the mountain retaining wall. This is a construction method in which a girder made of H steel or the like is laid horizontally between the lumber. The bridge beams support the left and right mountain retaining walls under soil pressure to prevent the excavation surface from collapsing.

[0003] Further, as a frame type of the cross beam, which is called an orthogonal type horizontal cross beam frame type, in which so-called cross beams are crossed at right angles, is one of the widely used construction methods at present. Is. In this orthogonal type horizontal crossbeam structure, crossbeams cannot cross each other on the same plane. Therefore, the crossbeams that cross each other are provided with a vertical difference so that a so-called three-dimensional crossover is performed.

[0004]

[Problems to be solved by the device]

 In the conventional cross type horizontal cross beam structure, the positions of the cross beams are shifted vertically, so the heights of the uprising members located at both ends of the cross beam must be changed accordingly. However, when it was necessary to stack upholstery materials on top of each other, there were difficulties in design and construction. For example, when using upholstery material with different heights, the fired material at the corners of the upholstery material must be installed diagonally in the vertical direction, and the fired beam on the same plane. There was a problem that the strength of the striking beam was lower than when it was erected and it was difficult to erect during construction. Therefore, the present invention aims to provide a joint for facilitating the crossing of the beams in the same plane.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in order to prevent the collapse of the excavated ground, a substantially rectangular parallelepiped used at the plane crossing part of the cross beam installed horizontally between the facing uprights attached to the mountain retaining wall. The through-hole that allows the cut beam to pass through is provided, and the cut-beam insertion hole with the outer end opened through the side wall is provided on both sides of the through-hole. And are arranged so as to be orthogonal to each other on the same plane.

[0006]

[Action]

 In the present invention, the insertion holes are provided on both sides of the through hole through the side walls, and the through hole and the holes provided on both sides thereof are orthogonal to each other on the same plane. The beams can be made orthogonal by passing them through. In addition, since the through hole and the insertion holes on both sides of the insertion hole are orthogonal to each other on the same plane, that is, the left and right insertion holes are orthogonal to the through hole in a straight line, so that the cutting beam is inserted from the left and right insertion holes. When inserted, it is possible to prevent the occurrence of a rotational moment due to a deviation in the insertion direction.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. In the plane crossing joint for trusses of the present invention, the left and right ends of a rectangular parallelepiped 10 having a through hole A for penetrating trusses in the center of the side surface are formed in a truncated pyramid shape. The through hole A has a square cross section, a height set to a standard height of H steel used for the truss 30, and a width set to be slightly wider than a standard width of H steel. In other words, since the through hole A of the rectangular parallelepiped portion 10 is slightly larger than the standard width of the H steel of the cut beam 30 to be penetrated, even if the cut beam 30 passed through the through hole A is slightly moved to the left and right to rotate and move. The rotational moment is not transmitted to the side wall A1 of the through hole A.

Further, the pyramidal trapezoidal portions 20 at both ends of the rectangular parallelepiped 10 are provided with insertion holes B for the cutting beams 30 so as to be orthogonal to each other on the same plane from the left and right end faces toward the through hole A. There is. The shape of the cross section of the insertion hole B is a quadrangle whose length and width are set to the standard height and width of H steel for the truss 30. The tip of each insertion hole B is a flat closed end surface at the side wall A1 of the through hole A, and the end surface of the beam 30 inserted into the insertion hole B is formed so as to uniformly contact the closed end surface. ing.

That is, when the cutting beams 30 are inserted into the through holes A from the left and right insertion holes B, the left and right cutting beams 30 are positioned on a straight line orthogonal to the through holes A and do not shift to the left and right. In addition, the end face of the cross beam 30 does not hit against the closed end face. As a result, the occurrence of rotational moment at the time of crossing the cross beam 30 inserted into the insertion hole B is suppressed. Further, the ribs 40 are reinforced along the longitudinal direction of the rectangular parallelepiped and the direction orthogonal thereto so that the flat crossing joint for beams of the present invention is not distorted by the force received from the beams 30 at the time of cross construction. It is provided as a material.

In this way, one H steel 30 for a girder is pierced through the through-hole A, and the cutting girder 30 is inserted into the insertion holes B orthogonal to each other from the left and right sides of the through-hole A 1, so that the same plane is formed. The cross beams 30 can be crossed with each other. Further, the cutting beam 30 inserted into the through hole A and the insertion hole B may be fixed by a bolt or the like, if necessary. Further, in this embodiment, the through hole A and the insertion hole B are orthogonally intersected with each other, but the intersecting angle may be an angle other than a right angle if necessary.

[0011]

[Effect of device]

 In the present invention, unlike the prior art, when crossing the beams, there is no need to provide a height difference between the two intersecting beams, which simplifies the design and construction. For example, since there is no difference in the height of the upholstery material that is provided for crossing the beams, unlike the conventional method, it is erected without damaging the strength of the striking beam that is erected at the corners between the upholstery materials. be able to. Further, in the present invention, since the crossbeams can be crossed at right angles on the same plane simply by inserting the crossbeams into the through holes and the insertion holes, there is no labor required during the construction of the crossbeams, and the crossing position due to the design change You can easily respond to changes in.

[Brief description of drawings]

FIG. 1 is an explanatory view of a plane cross joint for a girder of the present invention.

FIG. 2 is an explanatory cross-sectional view in a state where the H-beam for cross beam is intersected with the plane crossing joint for cross beam of the present invention.

[Explanation of symbols]

 A through hole B insertion hole 30 beam

Claims (1)

[Scope of utility model registration request] 1. A joint of a substantially rectangular parallelepiped used for a plane intersecting portion of a girder that is horizontally installed between opposing uprising members attached to a mountain retaining wall in order to prevent collapse of the excavated ground. ,
Through-holes are provided to pass through the beams, and holes for insertion of beams are provided on both sides of the through-holes with sidewalls at the outer ends, and the through-holes and the holes on both sides are on the same plane. A plane cross joint for beams, which is arranged so as to be orthogonal to each other.