Through concrete filled steel tube tied arch bridge arch rib cross-brace structure

Abstract

The utility model discloses an arch rib cross-brace structure of a through concrete filled steel tube tied arch bridge, which relates to the technical field of arch rib cross-braces and comprises a cement base, a filling chute is arranged in the middle of the upper surface of the cement base, and positioning grooves are arranged on two sides of the upper surface of the filling chute. Compared with an existing common through concrete-filled steel tube tied arch bridge arch rib cross-brace structure, the through concrete-filled steel tube tied arch bridge arch rib cross-brace structure has the advantages that through the arrangement of the positioning base, a through arch bridge arch rib plate can be installed in the positioning base in a modularized mode; therefore, the mounting efficiency of the through arch bridge arch rib plate is improved; through the arrangement of the filling sliding groove, when the through arch bridge arch rib plate is modularly installed, the positioning base slides along the filling sliding groove to assist in installing the through arch bridge arch rib plate, errors generated when the through arch bridge arch rib plate is installed through a crane are eliminated, and the installing speed and precision are improved.

Description

Technical Field

[0001] This utility model relates to the field of arch rib cross bracing technology, specifically to an arch rib cross bracing structure for a bottom-bearing steel-concrete tied arch bridge. Background Technology

[0002] Steel-concrete composite arch bridges have advantages such as high material strength, convenient construction, and beautiful appearance. The tied-arch steel-concrete composite bridge, as one type, has a low construction height and strong navigation capacity. It combines the arch and beam structures to jointly bear the load, fully utilizing the combined bending effect of the beam and the compressive effect of the arch. It is one of the commonly used bridge types in newly built bridges spanning rivers or railway lines.

[0003] The existing tie-arch structure of the under-deck steel-concrete composite arch bridge usually requires the use of a crane to lift the under-deck arch rib plate and position it on the surface of the concrete pier. At this time, positioning is required according to the installation requirements. The existing method is usually to make minor adjustments to the arch rib plate based on the position of the concrete pier, which reduces the installation speed of the arch rib plate.

[0004] Therefore, in view of this, we studied and improved the existing structure to address its shortcomings, and proposed a cross bracing structure for the arch rib of a tied arch bridge with steel tube concrete. Utility Model Content

[0005] The purpose of this utility model is to provide a cross bracing structure for the arch rib of a tied arch bridge with a steel-concrete composite under-bearing structure, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cross bracing structure for the arch rib of a tie-arch bridge with a lower bearing steel pipe concrete structure, comprising a cement base, a filling groove in the middle of the upper surface of the cement base, and bolt fixing grooves on both sides of the upper surface of the filling groove, a sliding base slidably mounted on the inner surface of the filling groove, a sliding bottom plate on the upper surface of the sliding base, a positioning base on the upper surface of the sliding bottom plate, support plates on both sides of the sliding bottom plate, and a fixing bolt spirally mounted on the upper surface of the support plate, and the sliding base and the cement base are fixedly connected by the fixing bolt.

[0007] Preferably, the upper surface of the positioning base is provided with a positioning hole, and both sides of the end of the positioning base are provided with a positioning groove, and both sides of the positioning base are provided with a threaded groove.

[0008] Preferably, a positioning post is slidably installed on the inner surface of the positioning hole, and a lower-bearing arch rib plate is provided on the upper surface of the positioning post.

[0009] Preferably, the two end surfaces of the lower arch rib plate of the lower arch bridge are provided with positioning grooves II, and the two lower surfaces of the lower arch rib plate of the lower arch bridge are provided with threaded grooves II.

[0010] Preferably, a positioning block is slidably mounted on the inner surface of the second positioning groove, and the positioning block connects the second positioning groove and the first positioning groove.

[0011] Preferably, the surface of the positioning block is provided with a connecting plate, and the surface of the connecting plate is provided with a second fixing bolt, and the positioning base and the lower-bearing arch rib plate are fixedly connected by the second fixing bolt.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the setting of a cement base, a filling groove, a bolt fixing groove, a sliding base, a sliding bottom plate, a positioning base, a support plate, a fixing bolt, a positioning hole, a positioning groove, and a threaded groove, allows the arch ribs of the under-deck arch bridge to be installed in a modular manner into the interior of the positioning base, thereby improving the installation efficiency of the arch ribs of the under-deck arch bridge. The filling groove allows the positioning base to slide along the filling groove during modular installation of the arch ribs of the under-deck arch bridge, assisting in the installation of the arch ribs and eliminating errors when using a crane to install the arch ribs of the under-deck arch bridge, thus improving installation speed and accuracy.

[0014] 2. This utility model, through the setting of the under-arch bridge rib plate, positioning column, positioning groove two, threaded groove two, connecting plate, fixing bolt two, and positioning block, can assist the under-arch bridge rib plate to accurately connect with the positioning base when it falls; through the setting of the connecting plate, the positioning block can be attached to the outer surface of the under-arch bridge rib plate and the positioning base to fix them together. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the arch rib plate of the under-bearing arch bridge of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the positioning base of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the connecting plate of this utility model.

[0019] In the diagram: 1. Cement base; 101. Filling groove; 102. Bolt fixing groove; 2. Sliding base; 201. Sliding base plate; 202. Positioning base; 203. Support plate; 204. Fixing bolt one; 205. Positioning hole; 206. Positioning groove one; 207. Threaded groove one; 3. Under-bearing arch bridge rib plate; 301. Positioning column; 302. Positioning groove two; 303. Threaded groove two; 304. Connecting plate; 305. Fixing bolt two; 306. Positioning block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-3 As shown, a cross bracing structure for the arch rib of a tied arch bridge with a steel-concrete composite under-deck structure includes a cement base 1. A filling groove 101 is provided in the middle of the upper surface of the cement base 1, and bolt fixing grooves 102 are provided on both sides of the upper surface of the filling groove 101. By setting the filling groove 101, the positioning base 202 can slide along the filling groove 101 to assist in the installation of the arch rib plate 3 of the under-deck arch bridge during modular installation. This eliminates the error when using a crane to install the arch rib plate 3 of the under-deck arch bridge, and improves the installation speed and accuracy.

[0022] Furthermore, a sliding base 2 is slidably installed on the inner surface of the filling groove 101, and a sliding base plate 201 is provided on the upper surface of the sliding base 2, and a positioning base 202 is provided on the upper surface of the sliding base plate 201. With this technical solution, the arch rib plate 3 of the under-bearing arch bridge can be installed into the interior of the positioning base 202 in a modular manner, thereby improving the installation efficiency of the arch rib plate 3 of the under-bearing arch bridge.

[0023] Furthermore, support plates 203 are provided on both sides of the sliding base plate 201, and fixing bolts 204 are spirally installed on the upper surface of the support plates 203. The sliding base 2 and the cement base 1 are fixedly connected by fixing bolts 204. In this technical solution, the positioning base 202 can be pre-fixed by the setting of fixing bolts 204, so as to avoid the arch rib plate 3 of the lower arch bridge from shaking when the concrete is not fixed after pouring.

[0024] Furthermore, the upper surface of the positioning base 202 is provided with positioning holes 205, and both sides of the end of the positioning base 202 are provided with positioning grooves 206, and both sides of the positioning base 202 are provided with threaded grooves 207. With this technical solution, the arch rib plate 3 of the under-bearing arch bridge can be positioned and installed on the upper surface of the positioning base 202 by setting the positioning holes 205.

[0025] like Figure 4 As shown, a positioning post 301 is slidably installed on the inner surface of the positioning hole 205, and a lower-bearing arch rib plate 3 is provided on the upper surface of the positioning post 301. This technical solution, through the setting of the positioning post 301, can help the lower-bearing arch rib plate 3 to accurately connect with the positioning base 202 when it falls.

[0026] Furthermore, positioning grooves 302 are provided on both sides of the end of the arch rib plate 3 of the lower-bearing arch bridge, and threaded grooves 303 are provided on both sides of the lower surface of the arch rib plate 3 of the lower-bearing arch bridge. The threaded grooves 303 facilitate the positioning and installation of the fixing bolts 305.

[0027] Furthermore, a positioning block 306 is slidably installed on the inner surface of positioning groove 2 302, and the positioning block 306 connects positioning groove 2 302 and positioning groove 1 206. With this technical solution, the connecting plate 304 can be quickly positioned and installed into the interior of positioning groove 2 302 and positioning groove 1 206 through the setting of positioning block 306.

[0028] Furthermore, the surface of the positioning block 306 is provided with a connecting plate 304, and the surface of the connecting plate 304 is provided with a fixing bolt 305. The positioning base 202 and the lower arch bridge rib plate 3 are fixedly connected by the fixing bolt 305. In this technical solution, by setting the connecting plate 304, the positioning block 306 can be attached to the outer surface of the lower arch bridge rib plate 3 and the positioning base 202 to fix them.

[0029] Working Principle: When using the cross bracing structure of the arch rib of the under-deck steel-concrete tied arch bridge, firstly, the sliding base plate 201 with the sliding base 2 is slidably installed into the filling groove 101 opened on the surface of the cement base 1 to complete the initial installation of the positioning base 202. At the same time, a crane is used to lift the under-deck arch rib plate 3, so that the under-deck arch rib plate 3 is moved above the positioning base 202 and then stably lowered. Simultaneously, according to the positioning post 301 set on the lower surface of the under-deck arch rib plate 3, the positioning base 202 is pushed so that the sliding base 2 on the lower surface slides along the filling groove 101, and the position of the positioning base 202 is finely adjusted so that the positioning hole 205 is aligned with the positioning post 301, so that the under-deck arch rib plate 3 can be accurately inserted and installed with the positioning base 202. After the positioning and installation of the under-deck arch rib plate 3 is completed, the fixing bolt 204 is screwed into the bolt fixing groove 102 to pre-fix the positioning base 202. After pre-fixing, the connecting plate 304 with positioning block 306 is simultaneously inserted into the positioning groove 202 and positioning groove 206. Then, the fixing bolt 205 is simultaneously screwed into the threaded groove 207 and threaded groove 203, completing the positioning base 202 and the interior of the under-deck arch rib plate 3. Finally, concrete is filled into the filling groove 101 and bolt fixing groove 102 until the concrete is installed, completing the installation of the under-deck arch rib plate 3. This is the working principle of the under-deck steel-concrete tied arch bridge arch rib cross bracing structure.

Claims

1. A cross bracing structure for the arch rib of a tied-arch bridge with a steel-concrete composite under-bearing system, comprising a cement base (1), characterized in that, A filling groove (101) is provided in the middle of the upper surface of the cement base (1), and bolt fixing grooves (102) are provided on both sides of the upper surface of the filling groove (101). A sliding base (2) is slidably installed on the inner surface of the filling groove (101), and a sliding base plate (201) is provided on the upper surface of the sliding base (2). A positioning base (202) is provided on the upper surface of the sliding base plate (201). Support plates (203) are provided on both sides of the sliding base plate (201), and a fixing bolt (204) is spirally installed on the upper surface of the support plate (203). The sliding base (2) and the cement base (1) are fixedly connected by the fixing bolt (204).

2. The cross bracing structure for the arch rib of a tied-arch bridge with steel-concrete composite under-bracing as described in claim 1, characterized in that, The upper surface of the positioning base (202) is provided with a positioning hole (205), and both sides of the end of the positioning base (202) are provided with a positioning groove (206), and both sides of the positioning base (202) are provided with a threaded groove (207).

3. The under-bearing steel-concrete tied arch bridge arch rib cross bracing structure according to claim 2, characterized in that, The inner surface of the positioning hole (205) is slidably fitted with a positioning column (301), and the upper surface of the positioning column (301) is provided with a lower-bearing arch rib plate (3).

4. The arch rib cross bracing structure of a bottom-bearing steel-concrete tied arch bridge according to claim 3, characterized in that, The lower end of the arch rib plate (3) of the lower arch bridge is provided with positioning grooves (302) on both sides, and threaded grooves (303) are provided on both sides of the lower surface of the arch rib plate (3).

5. The arch rib cross bracing structure of a tied arch bridge with steel-concrete composite under-braced structure according to claim 4, characterized in that, A positioning block (306) is slidably installed on the inner surface of the second positioning groove (302), and the positioning block (306) connects the second positioning groove (302) and the first positioning groove (206).

6. The cross bracing structure for the arch rib of a tied-arch bridge with steel-concrete composite under-bracing as described in claim 5, characterized in that, The surface of the positioning block (306) is provided with a connecting plate (304), and the surface of the connecting plate (304) is provided with a fixing bolt (305). The positioning base (202) and the lower arch bridge rib plate (3) are fixedly connected by the fixing bolt (305).

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