Orthotropic bridge deck steel box girder system

Abstract

The utility model relates to an orthotropic bridge deck steel box girder system which comprises a single-box three-chamber steel box girder frame structure formed by a bottom plate unit piece, a top plate unit piece, a middle web plate unit piece and side web plate unit pieces, the middle web plate unit piece and the side web plate unit pieces are connected with the bottom plate unit piece, side partition plate unit pieces are arranged in side box chambers, and middle partition plate unit pieces are arranged in middle box chambers. The overhanging upper cantilever arm unit pieces and the top plate unit pieces on the upper portions of the two sides of the structure form a bridge deck structure for motor vehicles to pass through, and the overhanging lower cantilever arm unit pieces on the lower portions of the two sides of the structure arch pedestrians and non-motor vehicles to pass through. Compared with a conventional bridge, the bridge has longer service life (minimum maintenance) and standardized module design, vehicles can pass through the upper layer, non-motor vehicles and pedestrians can pass through the two sides of the lower layer, the overall height of the section of the bridge can be increased through the structural form, the manufacturing cost can be saved, and the construction cost is reduced. Pedestrians and non-motor vehicles can get on and off the bridge more conveniently, and meanwhile due to the fact that the width of the bridge is reduced, transverse stress of the bridge is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure bridge construction, in particular to an orthogonal anisotropic bridge deck steel box girder system. Background Art

[0002] Steel box girders are a commonly used steel bridge structure. During the construction of bridges, steel box girders not only participate in the overall stress of the bridge structure as the upper edge structure of the steel girder, but also bear the vehicle load as the bridge deck. In related technologies, motor vehicle lanes and pedestrian lanes are set on the upper part of the steel box girder. This structure increases the lateral stress of the bridge due to the ultra-wide steel box girder, is difficult to design, uses a large amount of steel, and has low economic efficiency. In addition, large steel box girders are prone to uneven stress due to their ultra-wide steel box girder. Utility Model Content

[0003] In view of this, the utility model proposes an orthotropic bridge deck steel box girder system, aiming to solve the problems existing in the prior art.

[0004] Specifically, an orthotropic bridge deck steel box girder system of the utility model includes a bottom plate unit element;

[0005] A top plate unit disposed on the upper portion of the bottom plate unit;

[0006] a first middle web plate unit element and a second middle web plate unit element for connecting the bottom plate unit element and the top plate unit element;

[0007] A first side web unit element and a second side web unit element disposed between the first middle web unit element and the second middle web unit element;

[0008] A middle partition plate unit element is arranged between the first side web plate unit element and the second side web plate unit element, wherein the first side web plate unit element, the second side web plate unit element and the middle partition plate unit element form a middle box chamber;

[0009] A first side partition plate unit element is disposed between the first middle web plate unit element and the first side web plate unit element, wherein the first middle web plate unit element, the first side web plate unit element and the first side partition plate unit element form a first side box chamber;

[0010] and a second side partition plate unit element disposed between the second middle web plate unit element and the second side web plate unit element, wherein the second middle web plate unit element, the second side web plate unit element and the second side partition plate unit element form a second side box chamber.

[0011] Based on the above solution, the first side partition plate unit is connected to the middle partition plate unit and the second side partition plate unit respectively;

[0012] The first side partition plate unit element, the middle partition plate unit element and the second side partition plate unit element are located in the same plane.

[0013] In addition to the above solutions, it also includes:

[0014] Upward arm units arranged on both sides of the top plate unit for motor vehicles to pass through;

[0015] The top plate unit component and the upper arm unit component are located in the same plane.

[0016] On the basis of the above scheme, it also includes: lower cantilever arm units arranged on both sides of the bottom plate unit for pedestrians and non-motor vehicles to pass.

[0017] The orthogonal anisotropic bridge deck steel box girder system provided by the utility model comprises a bottom plate unit component, a top plate unit component, and a middle web plate unit component and a side web plate unit component which are connected to the bottom plate unit component and together form a single-box three-chamber steel box girder frame structure, the side partition plate unit components are arranged in the side box chamber, the middle partition plate unit components are arranged in the middle box chamber, the upper cantilevered upper cantilever arm unit components and the top plate unit components on both sides of the structure form a bridge deck structure for motor vehicles to pass, and the lower cantilevered lower cantilever arm unit components on both sides of the structure are arches for pedestrians and non-motor vehicles to pass; the steel box girder is a single-box three-chamber structure with a stable structure. This steel box girder structure arranges motor vehicle lanes and pedestrian and non-motor vehicle lanes in layers, the upper layer is for motor vehicles to pass, and the lower layer is for pedestrians and non-motor vehicles to pass, thereby solving the problem of uneven force caused by the excessive width of the large steel box girder, and can also facilitate pedestrians and non-motor vehicles to get on and off the bridge, with high economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 is a structural schematic diagram of the orthotropic bridge deck steel box girder system in Example 1;

[0020] Figure 2 Schematic diagram (cross section) of the structure of the orthotropic bridge deck steel box girder system in Example 1. DETAILED DESCRIPTION

[0021] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Example 1

[0023] like Figure 1-2 As shown, an orthotropic bridge deck steel box girder system comprises:

[0024] Bottom plate unit 1;

[0025] A top plate unit 2 disposed on the top of the bottom plate unit 1;

[0026] A first middle web unit element 3 and a second middle web unit element 4 for connecting the bottom plate unit element 1 and the top plate unit element 2;

[0027] A first side web unit element 5 and a second side web unit element 6 are arranged between the first middle web unit element 3 and the second middle web unit element 4;

[0028] A middle partition plate unit element 7 is arranged between the first side web unit element 5 and the second side web unit element 6, wherein the plane direction of the middle partition plate unit element 7 is consistent with the length direction of the bottom plate unit element 1; the first side web unit element 5, the second side web unit element 6 and the middle partition plate unit element 7 form a middle box chamber;

[0029] A first side partition plate unit element 8 is disposed between the first middle web unit element 3 and the first side web unit element 5; the first middle web unit element 3, the first side web unit element 5 and the first side partition plate unit element 8 form a first side box chamber;

[0030] and a second side partition plate unit element 9 arranged between the second middle web plate unit element 4 and the second side web plate unit element 6; the second middle web plate unit element 4, the second side web plate unit element 6 and the second side partition plate unit element 9 form a second side box chamber.

[0031] The first side partition plate unit element 8 is connected to the middle partition plate unit element 7 and the second side partition plate unit element 9 respectively, and the first side partition plate unit element 8, the middle partition plate unit element 7 and the second side partition plate unit element 9 are located in the same plane.

[0032] As a specific implementation scheme, it also includes: cantilever arm units 10 arranged on both sides of the top plate unit 2 for motor vehicles to pass; the top plate unit 2 and the cantilever arm unit 10 constitute a bridge deck structure for motor vehicles to pass.

[0033] As a specific implementation scheme, it also includes: lower cantilever arm units 11 arranged on both sides of the bottom plate unit 1 for pedestrians and non-motor vehicles to pass.

[0034] The assembly method of the orthotropic panel steel box girder system is to first assemble the bottom plate unit 1 in situ and weld it, position and install the middle partition plate unit 7 and weld it, then install the first middle web plate unit 3 and the second middle web plate unit 4 on both sides of the middle partition plate unit and weld it, position and install the first side partition plate unit 8 and the second side partition plate unit 9 on both sides and weld it, then install the first side web plate unit 5 and the second side web plate unit 6 on both sides, then install the top plate unit 2 on the top, and finally install the upper cantilever arm unit 10 and the lower cantilever arm unit 11 on both sides and weld them.

[0035] Orthotropic bridge deck steel box girder is very efficient. As a structure composed of vertical and horizontal perpendicular stiffening ribs and bridge deck cover, it bears wheel loads together. It is one of the integral components of the bridge main support structure, which can increase the stiffness of the designed components and save materials. The orthotropic bridge deck is assembled on the tire frame. The bottom plate units are positioned and installed in sequence from the middle to the sides on the tire frame, and are welded firmly to the template. After the butt welding of the bottom plate units is completed, the diaphragm units of the middle box room are installed. The diaphragm units are temporarily positioned with angle steel diagonal braces to assist in positioning. The middle web units on both sides of the middle box room diaphragm units are installed and fixed with the diaphragm units by electric welding. The upper diaphragm units related to the middle box room and the anchor box are installed, the steel anchor box is installed, the side box room diaphragm units are installed, the side web units on both sides are installed, the top plate units are installed, the lower cantilever units on both sides are installed, and the upper cantilever units on both sides are installed. The orthogonal anisotropic bridge deck steel box girder system of the present invention has an almost all-steel main structure. Compared with conventional bridges, it can have a longer service life (minimal maintenance) and a standardized module design, and vehicles can pass through the upper layer, and non-motor vehicles and pedestrians can pass through both sides of the lower layer. This structural form can not only increase the overall height of the bridge section, but also save construction costs, and make it more convenient for pedestrians and non-motor vehicles to get on and off the bridge. At the same time, due to the reduction in bridge width, the lateral force on the bridge is reduced.

[0036] Example 2

[0037] This embodiment provides a specific implementation method according to the orthotropic bridge deck steel box girder system in Embodiment 1, including the following steps:

[0038] (1) For the convenience of processing and transportation, each unit element of the sub-orthotropic panel steel box girder system can be divided into several plate units, which can be assembled into an integral structure after processing and transportation to the construction site;

[0039] (2) Position and install the bottom plate units in sequence according to the bottom plate unit components 1, and weld them firmly;

[0040] (3) After the welding of the butt joint of the bottom plate unit 1 is completed, the middle partition unit 7 of the intermediate box chamber is installed. When installing the middle partition unit 7, angle steel diagonal braces are temporarily added on both sides to assist in positioning and supporting;

[0041] (4) Install the middle web plate units on both sides of the middle transverse diaphragm unit 7 and weld and fix them to the middle diaphragm unit;

[0042] (5) Install the side bulkhead unit components of the box chambers on both sides. When installing the side bulkhead unit components, temporarily add angle steel diagonal braces on both sides to assist in positioning and support, and weld them to the middle web unit components;

[0043] (6) Install the side web plate units on both sides and weld them to the side diaphragm plate units;

[0044] (7) Install the top plate unit 2 and weld it to the partition plate and web plate unit;

[0045] (8) Install the lower arm unit components 11 on both sides and weld them to the side web unit components. When installing the lower arm unit components 11 on both sides, temporarily add angle steel diagonal braces on the upper part to support and connect them to the side web unit components to assist in positioning;

[0046] (9) Install the upper arm units 10 on both sides and weld them to the side web units to form a whole with the top plate unit 2.

[0047] Compared with conventional devices, the orthogonal anisotropic bridge deck steel box girder system of the present application is mainly used for the construction and assembly of steel box girders in bridges, which solves the problem of uneven force on large steel box girders due to their excessive width. This structure has the characteristics of stable structure, light weight, high bearing capacity, simple assembly and high economy.

[0048] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An orthotropic bridge deck steel box girder system, characterized in that: It comprises a base plate unit (1); A top plate unit (2) arranged on the upper part of the bottom plate unit (1); A first middle web unit element (3) and a second middle web unit element (4) for connecting the bottom plate unit element (1) and the top plate unit element (2); A first side web unit element (5) and a second side web unit element (6) arranged between the first middle web unit element (3) and the second middle web unit element (4); a middle partition plate unit component (7) disposed between the first side web plate unit component (5) and the second side web plate unit component (6), wherein the first side web plate unit component (5), the second side web plate unit component (6) and the middle partition plate unit component (7) form a middle box chamber; a first side partition plate unit element (8) disposed between the first middle web plate unit element (3) and the first side web plate unit element (5), wherein the first middle web plate unit element (3), the first side web plate unit element (5) and the first side partition plate unit element (8) form a first side box chamber; and a second side partition plate unit element (9) arranged between the second middle web plate unit element (4) and the second side web plate unit element (6); the second middle web plate unit element (4), the second side web plate unit element (6) and the second side partition plate unit element (9) form a second side box chamber.

2. The orthotropic bridge deck steel box girder system according to claim 1, characterized in that: The first side partition plate unit element (8) is connected to the middle partition plate unit element (7) and the second side partition plate unit element (9) respectively; The first side partition plate unit element (8), the middle partition plate unit element (7) and the second side partition plate unit element (9) are located in the same plane.

3. The orthotropic bridge deck steel box girder system according to claim 1, characterized in that: Also includes: An uplift arm unit (10) provided on both sides of the top plate unit (2) for motor vehicles to pass through; The top plate unit component (2) and the upper arm unit component (10) are located on the same plane.

4. The orthotropic bridge deck steel box girder system according to claim 1, characterized in that: Also includes: Lower arm units (11) are arranged on both sides of the bottom plate unit (1) for pedestrians and non-motor vehicles to pass through.

Images