CN209891038U

CN209891038U - Adjustable temporary bridge

Info

Publication number: CN209891038U
Application number: CN201822234748.4U
Authority: CN
Inventors: 毕建华; 李永兴; 陶文华
Original assignee: Wujiang City Minggang Road & Bridge Co Ltd
Current assignee: Wujiang City Minggang Road & Bridge Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2020-01-03
Anticipated expiration: 2028-12-28

Abstract

The utility model discloses an adjustable temporary bridge, which comprises a plurality of pillars arranged at preset intervals, wherein a plurality of crossbeams are arranged on the pillars in parallel, the crossbeams are arranged along the temporary bridge erecting direction, and a bridge floor is arranged above the crossbeams in parallel; the pull rod is arranged between two adjacent upright columns, the pull device is connected above the upright columns and comprises a pull rod, the pull rod is arranged between the two adjacent upright columns, and two ends of the pull rod are fixed on the upright columns through nuts. The utility model provides a temporary bridge with adjustable through distinguishing it with current plywood, can make the even bridge of stress distribution.

Description

Adjustable temporary bridge

Technical Field

The utility model relates to a temporary bridge particularly, relates to a temporary bridge with adjustable.

Background

Temporary bridge erected for ensuring vehicles such as vehicles to pass through obstacles such as rivers, canyons, ditches and the like. Generally consisting of an upper structure (bridge span structure) and a lower structure (bridge foot). The method is characterized in that: simple structure, simple operation, short erection time and easy repair. The temporary bridge can be classified into a temporary bridge and a standard bridge according to different equipment. The access bridge is erected using access materials or prefabricated components.

In general, when performing works such as road construction or bridge repair, a work platform and a transportation line are required to be able to carry necessary equipment or to install work vehicles and transportation lines in a river. Rivers or temporary pedestrian overpasses to ensure pedestrian traffic.

Temporary bridges are used for bridges, construction bridges, permanent bridges, etc., and thus their purposes and applications are diversified. In addition, as the length and width of the bridge become longer and the time required for the bridge to last becomes longer, a construction method of a hypothetical bridge having high structural stability has been realized.

The temporary bridges of the prior art, however, have some drawbacks and disadvantages. Loads applied to the beam and the pillar and twisting or bending of the beam due to the loads will cause an increase in unit cost of the bridge due to loads applied to the temporary bridge by laminates or vehicles, etc., and due to delays in construction.

In addition, in order to minimize the load applied to the columns, the installation of the temporary bridge must be performed after the installation or installation of the additional material, thus complicating the installation process and extending the construction period of the bridge.

Finally, due to seasonal factors, weather changes during construction, the length of the girder expands or contracts, and thus the temporary bridge must be individually worked according to its expansion and contraction length.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above problem that prior art exists, provide a temporary bridge with adjustable, through distinguishing it with current plywood, can make the even bridge of stress distribution.

For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:

an adjustable temporary bridge comprises a plurality of upright posts which are arranged at preset intervals, a plurality of cross beams are arranged on the upright posts in parallel, the cross beams are arranged along the temporary bridge erecting direction, and a bridge deck is arranged above the cross beams in parallel; the pull rod is arranged between two adjacent upright columns, the pull device is connected above the upright columns and comprises a pull rod, the pull rod is arranged between the two adjacent upright columns, and two ends of the pull rod are fixed on the upright columns through nuts.

The utility model discloses further set up to, be provided with the longeron on the stand, the crossbeam with the longeron sets up perpendicularly.

The utility model discloses further set up as, the tractive device is connected adjacent two between the longeron.

The utility model discloses further set up to, the crossbeam is located the thickness of stand junction is greater than the thickness at crossbeam middle part.

The utility model discloses further set up to, the pull rod with be provided with the supporter between the crossbeam.

The utility model discloses further set up as, the bridge floor comprises a plurality of parallel arrangement's I-shaped roof beam.

The utility model discloses further set up to, I-beam bottom thickness is greater than top thickness.

The utility model discloses further set up to, the bridge floor with be provided with the buffer layer between the crossbeam, the buffer layer is made by rubber materials.

The utility model has the advantages that:

1. because the bridge member is arranged at the lower part of the beam, the length of the bridge member is relatively increased and decreased according to seasons, and the bridge is prevented from being influenced by factors such as seasonal climate and the like.

2. Since the thickness of the lower portion of the beam and the laminate forming the bridge becomes thick, the working efficiency is maximized, and the strength and deformation of the laminate are large.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a schematic view of an adjustable temporary bridge construction;

FIG. 2 is a schematic view of a drawing apparatus;

FIG. 3 is a schematic view of the support structure;

FIG. 4 is a schematic view of an I-beam arrangement;

fig. 5 is a schematic view of a buffer layer structure.

Detailed Description

For a complete understanding of the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. Embodiments of the present invention are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings may be exaggerated in order to emphasize clearer explanation. It should be noted that in the drawings, like members are denoted by like reference numerals. Moreover, a detailed description of known functions and configurations, which may be unnecessarily obscured by the gist of the present invention, is omitted.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 5, an adjustable temporary bridge comprises a plurality of columns 1 installed at predetermined intervals, a plurality of beams 2 are arranged on the columns 1 in parallel, the beams 2 are arranged along the temporary bridge installation direction, and a bridge deck 3 is arranged above the beams 2 in parallel; the drawing device 4 is arranged between two adjacent upright columns 1, the drawing device 4 is connected above the upright columns 1 and comprises a pull rod 41, the pull rod 41 is arranged between two adjacent upright columns 1, and two ends of the pull rod 41 are fixed on the upright columns 1 through nuts 42.

The present invention makes it possible to provide bending stresses more safely during external load operations by supporting, with tension, the part of the pulling device 4 that is provided separately to the cross beam 2 between the uprights 1. By loading the load, the clearance between the lower end surfaces of the pulling means 4 floats by an amount corresponding to an appropriate amount of deformation (deflection) by the prestressing pulling means 4, and the pulling means 4 receives a large tensile force, thereby enhancing the prestressing effect.

The tie rods 41 allow the cross member 2 to expand and contract due to temperature changes in summer and winter, and the cross member 2 to contract and loosen by adjusting the nuts 42.

More specifically, when the cross member 2 is expanded in summer, the nuts 42 are loosened so that the tie rods 41 are relatively extended. In winter, the length of the pull rod 41 is shortened by tightening the nut 42 as the cross beam 2 contracts.

As a preferred embodiment of the present invention, the upright post 1 is provided with a longitudinal beam 5, and the cross beam 2 is perpendicular to the longitudinal beam 5. The pulling device 4 is connected between two adjacent longitudinal beams 5.

In order to prevent the pulling device 4 from rubbing or colliding with the cross member 2 due to external impact, a support body 6 is provided between the pulling rod 41 and the cross member 2, and the support body 6 is formed in a convex shape so that the metal plate member has elasticity. The convex supporting body 6 is formed with a space portion between itself and the cross member 2, and the space portion serves as a buffer function when rubbing or colliding with the pulling device 4.

As another preferred embodiment of the present invention, the thickness of the beam 2 at the joint of the upright 1 is greater than the thickness of the middle of the beam 2. This is to prevent the columns 1 from absorbing the load generated in the girders 2 and the deck 3 to prevent collapse of the bridge.

As a preferred embodiment of the present invention, the bridge deck 3 is composed of a plurality of i-beams 31 arranged in parallel, and the thickness of the bottom of the i-beam 31 is greater than that of the top thereof, so as to disperse the load on the upper portion. This ensures the rigidity of the cross beam 2, saves the amount of steel used, and can improve the bending moment, shearing force and torque at each position of the cross beam, and improve the safety of the bridge.

As a preferred embodiment of the present invention, a buffer layer 7 is disposed between the bridge deck 3 and the cross beam 2. The cushioning layer 7 serves to reduce friction, shock or noise and vibration between the deck 3 and the beam 2. This is to reduce noise and vibration generated between the deck 3 and the cross member 2 due to running of the vehicle or the like. The buffer layer 7 is preferably formed of a rubber material, and may be made of a material such as silicone, which easily absorbs shock.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable temporary bridge, comprising: the bridge comprises a plurality of upright posts (1) arranged at preset intervals, wherein a plurality of cross beams (2) are arranged on the upright posts (1) in parallel, the cross beams (2) are arranged along the temporary bridge erecting direction, and a bridge deck (3) is arranged above the cross beams (2) in parallel; adjacent two stand (1) between be provided with tractive device (4), tractive device (4) are connected in the stand top, including pull rod (41), pull rod (41) set up adjacent two stand (1) between, pull rod (41) both ends are fixed through nut (42) on stand (1).

2. A temporary bridge according to claim 1, characterized in that: the upright post (1) is provided with a longitudinal beam (5), and the cross beam (2) is perpendicular to the longitudinal beam (5).

3. A temporary bridge according to claim 2, characterized in that: the traction device (4) is connected between two adjacent longitudinal beams (5).

4. A temporary bridge according to claim 1, characterized in that: the thickness of the cross beam (2) at the joint of the upright posts (1) is greater than that of the middle part of the cross beam (2).

5. A temporary bridge according to claim 1, characterized in that: and a support body (6) is arranged between the pull rod (41) and the cross beam (2).

6. A temporary bridge according to claim 1, characterized in that: the bridge deck (3) is composed of a plurality of I-shaped beams (31) which are arranged in parallel.

7. The temporary bridge according to claim 6, wherein: the thickness of the bottom of the I-shaped beam (31) is larger than that of the top of the I-shaped beam.

8. A temporary bridge according to claim 1, characterized in that: a buffer layer (7) is arranged between the bridge deck (3) and the cross beam (2), and the buffer layer (7) is made of rubber materials.