JPH0853812A - Horizontal joint construction of main girder in temporary bridge, and horizontal joint material - Google Patents

Abstract

PURPOSE:To mount a lining plate 3 directly on the upper parts of horizontal joint materials and to reduce the space as far as possible by forming monolithically lining plate-holding beams correspondent to holding beams and construction reinforcing sections correspondent to upper. machines of pair inclined structures. CONSTITUTION:Main girders 1 constructed in parallel with each other are connected with horizontal joint materials 2 at right angles to them at a plurality of longitudinal positions, and a lining plate 3 is directly laid on the upper parts of the joint materials 2. In the case the main girders 1 are horizontally jointed with each other, reinforcing joint sections 17 are positioned downward from the upper levels of the main girders 1, interlocking seat sections 6 are positioned upward from the upper levels of the main girders 1, so that parts positioned to the lower positions of the horizontal joint materials 2 are operated as construction reinforcing sections 30 constituted of part of pair inclined structures 25 and 26 on the basis of the upper levels of the main girders 1, and parts positioned to upper positions are operated as lining plate holding beams 31 for bearing the lining plate 3. For that purpose, holding beams are not required, and the lining plate can be directly mounted on the upper parts of the horizontal joint materials.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal connecting structure and a horizontal connecting member for main girders in a temporary bridge.

[0002]

2. Description of the Related Art As shown in FIG. 6, a temporary bridge temporarily used on a detour road or a construction site when replacing an existing bridge has a plurality of main girders 50 (plate girders) having an I-shaped cross section. It is erected in parallel, and a plurality of locations in the longitudinal direction between the main girders 50 are connected by an inclined structure 55 composed of an upper crosspiece 51, a lower crosspiece 52, and a diagonal member 53. A receiving beam 58 orthogonal to the main girder 50 is mounted on the slab, and a lining plate 5
9 was to be mounted.

[0003]

The receiving beam 58 is made of a section steel having an I-shaped or H-shaped cross section, and a great waste of space is required between the main girder 50 and the lining plate 59. (The bulk of the bridge becomes too large). In particular, in such shaped steel, since the standard size prepared is rough, the height dimension of the shaped beam will increase at a stroke when the strength of the receiving beam 58 is to be increased by one rank. Met.

[0004] In addition, the conventional temporary bridge has a problem that it takes time to transport, assemble and disassemble because of the large number of parts. In some cases, the backing plate 58 is omitted and the lining plate 59 is directly mounted on the upper part between the main girders 50. Joint plate (not shown) not only on the side of girder 50 but also on the top
In order to omit the receiving beam 58 in this manner, it is necessary to form a relief (recess) corresponding to the joint plate on the back surface of the lining plate 59. However, such a method has not been widely adopted.

The present invention has been made in view of the above circumstances, and it is possible to reduce waste in height space as much as possible, reduce labor for carrying, assembling, and disassembling, as well as a lining plate. The purpose of the present invention is to provide a horizontal connecting structure and a horizontal connecting member for main girders in a temporary bridge that does not require special processing.

[0006]

In order to achieve the above object, the present invention takes the following technical means. That is, the horizontal connection structure of the main girder according to the present invention, a plurality of main girder erected in parallel, and a horizontal connection member erected at a plurality of longitudinal positions between these main girder orthogonally to this. A lining plate placed over the upper part of the horizontal connecting members, wherein the horizontal connecting members are connected directly or indirectly to the main girder at both ends below the upper level of the main girder. And a lining plate receiving portion for engaging both ends on the main girder and supporting the lining plate above the upper level of the main girder is integrally formed. .

In the horizontal connecting member, both ends of the lining plate receiving portion are formed so as to expand toward both sides in the width direction of the horizontal connecting member, and fastening portions with the upper surface of the main girder are provided in these enlarged portions. Good. In addition, the horizontal connecting member used for the horizontal connection of the main girder according to the present invention has step portions formed at both ends thereof in such a manner that the lower side in the height direction is recessed, and is located above these step portions. The portions are enlarged on both sides in the width direction of the horizontal connecting member and serve as seat portions mounted on the upper surface of the main girder, and the lower portions of these steps are directly or directly connected to the side portions of the main girder. It is characterized in that it is a reinforcing joint part that is indirectly connected.

[0008]

The horizontal connecting member is integrally provided with a lining plate receiving portion corresponding to a conventionally used receiving beam, and a bridge reinforcing portion corresponding to a tilted upper crosspiece. for that reason,
By connecting the main girder parallel to each other with the horizontal connecting member, the lining plate can be directly mounted on the upper portion of the horizontal connecting member without using a receiving beam.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows a temporary bridge in which the horizontal connection structure of the main girders 1 according to the present invention is implemented. The main girders 1 that are laid in parallel with each other are transversely intersecting at a plurality of positions in the longitudinal direction thereof. They are connected by a connecting member 2, and a lining plate 3 is placed directly on top of each other of these horizontal connecting members 2.

As shown in FIG. 4, the horizontal connecting member 2 is formed by using an H-shaped steel as a raw material, and has a downward step formed by recessing the lower side in the height direction at both ends thereof. 5 are provided. In these step portions 5, upper portions thereof (portions closer to the outside in the longitudinal direction of the horizontal connecting member 2 and having a small thickness) are used as seat portions 6, and lower portions of the step portions 5 (the portions of the seat portion 6). The thicker part on the inside) is the reinforcing joint 7. The thickness of the seat portion 6 was 10 cm.

The seat portion 6 is provided with an enlarged portion 10 projecting in a plate shape toward both sides in the width direction of the horizontal connecting member 2.
The lower surface 10a of the enlarged portion 10 is placed on the upper surface of the main girder 1. The provision of such an enlarged portion 10 compensates for a decrease in the section modulus due to the provision of the step portion 5. It should be noted that the enlarged portion 10 is provided with a reinforcing rib 15 so that the upper surface thereof stands up along the width direction, and further reinforcement is intended.

The enlarged portion 10 is formed with a bolt insertion hole 11 which vertically penetrates the protruding portion. These bolt insertion holes 11 are fastening portions used to fasten the bolts 14 to the main girder 1 when the horizontal connecting member 2 is joined to the main girder 1 as shown in FIG. The reinforcing joint portion 7 is provided with a connecting plate 20 protruding downward from the lower surface 7a along the center in the width direction. The connection plate 20 has a plurality of (three in the drawing) bolt insertion holes 21 penetrating along the width direction of the horizontal connecting member 2.
These bolt insertion holes 21 are used to fasten bolts to a pair of inclined structures 25 or 26 attached to the main girder 1 when connecting the horizontal connecting member 2 to the main girder 1 as shown in FIG. Used.

When the main girder 1 is laterally connected by the horizontal connecting member 2 formed as described above, as shown in FIGS. 1 and 2, the reinforcing joint portion 7 of the horizontal connecting member 2 (the lower side of the step 5). Are positioned below the upper surface level of the main girder 1, and the engagement portion 6 (above the step portion 5) is positioned above the upper surface level of the main girder 1. Therefore, the horizontal connecting member 2 has a part positioned on the lower side with respect to the upper surface level of the main girder 1 as a part of the structure of the inclined structures 25 and 26 (the upper beam 5 shown in FIG. 6).
1) and acts as the erection reinforcing portion 30 and is positioned on the upper side to act as the lining plate receiving beam portion 31 that supports the lining plate 3.

For this reason, a receiving beam (see reference numeral 58 in FIG. 6) becomes unnecessary, and the height space between the main girder 1 and the lining plate 3 can be reduced as compared with the related art. In the present invention, the horizontal connecting member 2 can also be formed by using a square pipe or C-shaped steel as a raw material. Further, the enlarged portion 10 can be made to have a larger size in the thickness direction (square pipe shape or the like).

The configuration of the lining plate 3 and the tilt structures 25 and 26 are not limited at all.

[0016]

According to the present invention, which has the above-mentioned structure, the horizontal connecting member is provided on the lining plate receiving beam portion corresponding to the receiving beam used in the past and the upper crosspiece of the anti-tilt structure. Since it is integrally equipped with a corresponding erection reinforcement, the lining plate can be placed directly on the upper part of this horizontal connecting member, and the height space from the main girder to the lining plate can be reduced. (The bulk of the bridge can be reduced). Therefore, the work can be facilitated not only in the construction of the temporary bridge but also in the construction of the connecting road and the like.

In addition, since the number of parts as a temporary bridge can be reduced (no need for a beam), there is an advantage that transportation, assembly and disassembly are further facilitated. Since the fastening portion is provided in the enlarged portion, the work of connecting or disassembling the horizontal connecting member and the main girder can be easily performed. Of course, since the lining plate is not directly mounted on the upper surface of the main girder, it is not necessary to perform special processing on the lining plate.

[Brief description of drawings]

FIG. 1 is a front sectional view of a temporary bridge shown by a portion corresponding to line AA in FIG. 3;

FIG. 2 is a front sectional view of a temporary bridge shown at a portion corresponding to line BB in FIG. 3;

FIG. 3 is a perspective view showing a partially bridged temporary bridge constructed by implementing the horizontal connection structure of the main girder according to the present invention.

FIGS. 4A and 4B are perspective views showing the horizontal connecting member, in which FIG. 4A is a state in which it is looked up obliquely from below, and FIG.

FIG. 5 is a plan view showing a connecting portion between a horizontal connecting member and a main girder.

FIG. 6 is a front sectional view showing a conventional temporary bridge.

[Explanation of symbols]

 1 Main Girder 2 Horizontal Connecting Material 3 Lining Plate 5 Steps 6 Abutment Part 7 Reinforcement Joint Part 10 Enlarged Part 11 Bolt Insertion Hole (Fastening Part) 30 Construction Reinforcing Part 31 Covering Plate Receiving Beam Part

Claims (3)

[Claims] A plurality of main girders (1) erected in parallel
And a horizontal connecting member (2) which is installed at a plurality of longitudinal positions between these main girders (1) in a direction orthogonal to the main connecting girder (1), and a lining plate which is placed over the mutual connecting members (2). (3) and the horizontal connecting member (2) is an erection reinforcement part for connecting both ends directly or indirectly to the main girder (1) below the upper surface level of the main girder (1). (30) and a lining plate receiving beam portion (31) which engages both ends on the main girder (1) and supports the lining plate (3) above the upper surface level of the main girder (1). A horizontal connection structure for main girders in a temporary bridge, characterized by being integrally formed. 2. In the horizontal connecting member (2), both ends of the lining plate receiving beam portion (31) are formed to be enlarged toward both sides in the width direction of the horizontal connecting member (2), and these enlarged portions (10) are formed. ) Is provided with a fastening portion to the upper surface of the main girder (1), the horizontal connection structure of the main girder in the temporary bridge according to claim 1. 3. A horizontal connection member (2) used for horizontal connection of a main girder (1) in a temporary bridge, wherein stepped portions (5) are formed at both ends in such a manner that the lower side in the height direction is recessed. Has been formed,
The upper part of these step parts (5) is a seat part (6) which is enlarged on both sides in the width direction of the horizontal connecting member (2) and is mounted on the upper surface of the main girder (1). The main part of the temporary bridge characterized in that the lower part of these step parts (5) is a reinforcing joint part (7) directly or indirectly connected to the side part of the main girder (1). Horizontal connection material used for horizontal connection of girders.