Cross beam mounting structure between ribs of concrete-filled steel tube arch bridge

Abstract

The utility model provides an inter-rib cross beam mounting structure for a concrete-filled steel tube arch bridge, which belongs to the technical field of concrete-filled steel tube arch bridges and comprises arch ribs, the arch ribs comprise two outer side arch ribs arranged up and down, two inner side arch ribs arranged up and down and a plurality of arch rib stand columns, and the arch rib stand columns are connected between the two outer side arch ribs and the two inner side arch ribs; the two symmetrically-arranged on-arch stand columns are connected to the lower outer side arch rib and the lower inner side arch rib respectively. Two ends of the on-arch upright post top plate are respectively connected with the upper sides of the two on-arch upright posts; the outer side cross beam comprises a cross beam top plate, a cross beam bottom plate and a web plate; the beam top plate is connected with the arch rib stand columns through first connecting pieces. The cross beam bottom plate is connected with the spandrel upright post top plate through a second connecting piece; and the side surface stop block is connected to the arch upright post top plate. The problem of space conflict in the construction period of a traditional structure is solved, construction positioning is facilitated, the construction quality is improved, and the construction period is shortened.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel-concrete composite arch bridges, and more specifically, it relates to an installation structure for the crossbeams between the ribs of a steel-concrete composite arch bridge. Background Technology

[0002] An arch bridge is a bridge in a vertical plane where the arch serves as the main load-bearing structural component. Vertical loads are transferred to the arch abutments on both banks through the bending arch, with the arch structure primarily under compression. Steel structures are effectively used due to their high material strength, fast construction speed, and suitability for larger spans. Applying steel structural materials to the main beams and arch ribs of arch bridges creates steel arch bridges capable of long spans. Based on different load-bearing methods and structural characteristics, arch bridges can be mainly divided into three types: through-deck, mid-deck, and arch-through-span. Mid-deck steel-concrete composite arch bridges are widely used due to their beautiful lines, reasonable stress state, and convenient and quick construction technology. They fully utilize the material properties of concrete and steel, exhibiting high load-bearing capacity and good plasticity and toughness.

[0003] For mid-span steel-concrete composite arch bridges employing a longitudinal and transverse beam system, the number of arch ribs is typically four or six, with four ribs being the most common (two on each side). For this type of bridge, the inter-rib crossbeams consist of numerous components, including arch ribs, crossbeams, arch columns, and side blocks. Currently, the conventional construction process uses a "piecemeal" approach, where each component is hoisted and installed individually. The main steps are: ① Fabricating steel components such as arch ribs, arch columns, side blocks, and crossbeams in the factory, performing trial assembly, and then transporting them to the construction site; ② First, hoisting the outer single arch rib; ③ Then, hoisting the inner single arch rib; ④ After the arch rib is in place, hoisting the arch columns and welding them to the arch rib; ⑤ Installing the side blocks; ⑥ Finally, hoisting the crossbeams to complete the installation of the inter-rib crossbeams. During construction, significant spatial conflicts exist between the components, making installation difficult and construction control challenging. Furthermore, the construction process is complex and requires precise construction control techniques.

[0004] Therefore, in order to facilitate the construction of the spandrel steel-concrete composite rib beams in the longitudinal and transverse beam system, developing a quick-installation arch bridge rib beam installation structure is an urgent problem to be solved. Utility Model Content

[0005] In view of the problems that there are many components in the inter-rib crossbeam area, and that conventional construction methods result in large spatial conflicts between components, making installation difficult, construction uncontrollable, and the construction process complex, the purpose of this utility model is to provide an installation structure for the inter-rib crossbeam of a steel-concrete composite arch bridge, so as to "integrate the parts into a whole", avoid spatial conflicts during the construction period, facilitate construction positioning, improve construction quality, shorten the construction cycle, and improve construction convenience.

[0006] To achieve the above objectives, this utility model provides an installation structure for the crossbeams between the ribs of a steel-concrete composite arch bridge, comprising:

[0007] An arch rib includes two outer arch ribs arranged vertically, two inner arch ribs arranged vertically, and multiple arch rib columns, wherein the multiple arch rib columns are connected between the two outer arch ribs and the two inner arch ribs.

[0008] Two symmetrically arranged arch columns are connected to the lower outer arch rib and the lower inner arch rib, respectively.

[0009] The top plate of the arch support column is connected at both ends to the upper side of the two arch support columns respectively;

[0010] An outer crossbeam includes a top plate, a bottom plate, and a web connecting the top and bottom plates; the top plate is connected to the arch rib column via a first connector; the bottom plate is connected to the top plate of the arch column via a second connector; and...

[0011] Side stops, which are connected to the top plate of the column on the arch.

[0012] Furthermore, the first connector consists of four first steel plates located on the same horizontal plane, with one end of each first steel plate connected to the arch rib column and the other end connected to the top plate of the crossbeam.

[0013] Furthermore, the side of the first steel plate that contacts the arch rib column is an arc-shaped surface, and the first steel plate is welded to the arch rib column.

[0014] Furthermore, the first steel plate is welded to the top plate of the crossbeam.

[0015] Furthermore, the second connector includes at least two second steel plates, which are symmetrically arranged on both sides of the top plate of the arch column; the upper side of the second steel plate is connected to the bottom plate of the crossbeam, and the lower side is connected to the top plate of the arch column.

[0016] Furthermore, the upper side of the second steel plate is welded to the bottom plate of the crossbeam, and the lower side is welded to the top plate of the arch column.

[0017] Compared with the prior art, the present invention has the following technical effects:

[0018] This utility model discloses a crossbeam installation structure for the ribs of a steel-concrete composite arch bridge. The structure connects multiple components, such as the arch ribs, outer crossbeams, arch columns, and side blocks, into a unified whole through a first connector and a second connector, thus "integrating the parts into a whole" and avoiding the spatial conflict problems that exist during the construction period of traditional structures. This utility model's crossbeam installation structure for the ribs of a steel-concrete composite arch bridge not only facilitates construction positioning and improves construction quality, but also shortens the construction cycle and improves construction convenience. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A structural schematic diagram of a mid-span steel-concrete composite arch bridge provided for an embodiment of this utility model;

[0021] Figure 2 A cross-sectional structural diagram of a steel-concrete composite arch bridge rib beam installation structure provided for an embodiment of this utility model. Figure 1 (at point A in the middle);

[0022] Figure 3 A longitudinal section diagram of the crossbeam installation structure between the ribs of a steel-concrete composite arch bridge is provided for an embodiment of this utility model.

[0023] Figure 4 A top view schematic diagram of the connection structure between the top plate of the outer crossbeam and the arch rib provided in an embodiment of this utility model;

[0024] Figure 5 A top view schematic diagram of the connection structure between the bottom plate of the outer crossbeam and the arch rib provided in an embodiment of this utility model;

[0025] Figure 6 A top view schematic diagram of the partial connection between the top plate of the outer crossbeam and the arch rib provided in an embodiment of this utility model;

[0026] Figure 7 A side view of the partial connection between the bottom plate of the outer crossbeam and the column on the arch, provided in an embodiment of this utility model.

[0027] The following are the labeling elements in the figure:

[0028] 1. Arch rib, 1-1. Outer arch rib, 1-2. Inner arch rib, 1-3. Arch rib column, 2. Longitudinal and transverse beam system, 3. Arch column, 3-1. Top plate of arch column, 4. Side block, 5. Outer beam, 5-1. Top plate of beam, 5-2. Bottom plate of beam, 6. First connector, 7. Second connector.

[0029] A - Location of the interrib crossbeam; B - Welding connection method. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should be understood that the terms "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The singular forms “a,” “the,” and “the” used in the embodiments of this utility model and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0034] The terms "first" and "second" are used for descriptive purposes only, to distinguish objects, such as substances, from one another, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. For example, without departing from the scope of the embodiments of this utility model, a first XX can also be referred to as a second XX, and similarly, a second XX can also be referred to as a first XX. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0035] Please see Figures 1-7 The following describes an installation structure for the crossbeams between the ribs of a steel-concrete composite arch bridge, as provided in an embodiment of this utility model.

[0036] Figure 1 This diagram illustrates the structure of a common mid-span steel-concrete composite arch bridge. Its main structure includes arch ribs 1 and a longitudinal and transverse beam system 2. Based on the length of the transverse beams and considering structural stress and hoisting technology, the transverse beams are divided into outer beam segments adjacent to the arch ribs 1 and middle beam segments. This embodiment of the invention primarily studies the installation structure between the outer transverse beams 5 and the arch ribs 1. Specifically, this embodiment of the invention improves the structure of the inter-rib transverse beam positions in mid-span steel-concrete composite arch bridges, namely... Figure 1 The structure at point A in the design was improved.

[0037] In one embodiment of the present invention, a crossbeam installation structure for a steel-concrete composite arch bridge includes: an arch rib 1, two symmetrically arranged upper arch columns 3, an upper arch column top plate 3-1, an outer crossbeam 5, and a side stop block 4. The arch rib 1 includes two outer arch ribs 1-1 arranged vertically, two inner arch ribs 1-2 arranged vertically, and multiple arch rib columns 1-3, which are connected between the two outer arch ribs 1-1 and the two inner arch ribs 1-2. The two upper arch columns 3 are respectively connected to the lower outer arch rib 1-1 and the lower inner arch rib 1-2. The two ends of the top plate 3-1 of the upper arch column are respectively connected to the upper side of the two upper arch columns 3. The outer crossbeam 5 includes a top plate 5-1, a bottom plate 5-2, and a web connecting the top plate 5-1 and the bottom plate 5-2. The top plate 5-1 is connected to the arch rib columns 1-3 through a first connector 6. The bottom plate 5-2 is connected to the top plate 3-1 of the upper arch column through a second connector 7. The side block 4 is connected to the top plate 3-1 of the upper arch column.

[0038] like Figure 2 , Figure 3 As shown, the arch rib 1 in this embodiment includes two upper and lower outer arch ribs 1-1, two upper and lower inner arch ribs 1-2, and four arch rib columns 1-3. The upper and lower ends of the two left arch rib columns 1-3 are respectively connected to the two upper and lower outer arch ribs 1-1, and the upper and lower ends of the two right arch rib columns 1-3 are respectively connected to the two upper and lower inner arch ribs 1-2. The two symmetrically arranged upper arch columns 3 are respectively connected to a lower outer arch rib 1-1 and a lower inner arch rib 1-2.

[0039] This utility model provides an installation structure for the crossbeams between the ribs of a steel-concrete composite arch bridge. The structure connects multiple components, including the arch rib 1, outer crossbeam 5, upper arch column 3, and side stop block 4, into a unified whole via a first connector 6 and a second connector 7. This achieves "integration of components into a single unit," avoiding spatial conflicts that exist during the construction period of traditional structures. This installation structure for the crossbeams between the ribs of a steel-concrete composite arch bridge not only facilitates construction positioning and improves construction quality but also shortens the construction cycle and enhances construction convenience.

[0040] Furthermore, in this embodiment, the first connecting member 6 consists of four first steel plates located on the same horizontal plane. One end of each first steel plate is connected to the arch rib column 1-3, and the other end is connected to the top plate 5-1 of the crossbeam. For example... Figure 2 , Figure 4 , Figure 6 As shown. Furthermore, in this embodiment, the side of the first steel plate that contacts the arch rib column 1-3 is an arc-shaped surface. The first steel plate is welded to the arch rib column 1-3, as shown. Figure 4 , Figure 6 As shown, since the arch rib column 1-3 is a circular steel pipe, the side of the first steel plate that contacts the arch rib column 1-3 is designed as an arc surface, which facilitates the welding operation between the first steel plate and the arch rib column 1-3. Furthermore, the first steel plate is also welded to the top plate 5-1 of the crossbeam. In this way, the arch rib column 1-3 and the top plate 5-1 of the crossbeam can be easily welded together by using four first steel plates.

[0041] Furthermore, in this embodiment, the second connecting member 7 includes at least two second steel plates, which are symmetrically arranged on both sides of the top plate 3-1 of the arch column; the upper side of the second steel plate is connected to the bottom plate 5-2 of the crossbeam, and the lower side is connected to the top plate 3-1 of the arch column, as shown below. Figure 2 , Figure 3 , Figure 5 , Figure 7 As shown. Furthermore, the upper side of the second steel plate is welded to the bottom plate 5-2 of the crossbeam, and the lower side is welded to the top plate 3-1 of the arch column. In this way, the top plate 3-1 of the arch column and the bottom plate 5-2 of the crossbeam can be easily welded together using the second steel plate. Specifically, the second connecting member 7 includes four rectangular second steel plates, with two second steel plates on each side of the top plate 3-1 of the arch column.

[0042] In this embodiment of the invention, the steel components such as the arch rib 1, outer crossbeam 5, arch column 3, and side stop block 4 are all manufactured in the factory, and the overall structure is also assembled in the factory, achieving "integration of parts into a whole" and then transporting it to the construction site for hoisting and installation. The specific construction process can be carried out according to the following steps:

[0043] 1) First, the steel structural components such as arch rib 1, crossbeam, arch column 3, and side block 4 are processed in the factory. Based on the length of the crossbeam and in combination with the structural stress and hoisting process, the crossbeam is divided into the outer crossbeam 5 adjacent to the arch rib 1 and the middle beam segment, so as to minimize the cantilever length of the outer crossbeam 5.

[0044] 2) The components such as arch rib 1, outer crossbeam 5, arch column 3, and side block 4 are trial-assembled in the factory.

[0045] 3) Fix the top plate 5-1 of the outer crossbeam 5 to the arch rib column 1-3 using the first connector 6 (i.e., the first steel plate, 4 in total), see attached. Figure 4 Appendix Figure 6 ;

[0046] 4) Fix the bottom plate 5-2 of the outer crossbeam 5 to the top plate 3-1 of the arch column using the second connector 7 (i.e., the second steel plate, in 4 places), see attached. Figure 5 Appendix Figure 7 ;

[0047] 5) Inspect the quality of the welds to ensure that the multiple components, such as the arch rib 1, the outer crossbeam 5, the arch column 3, and the side block 4, are integrated into a unified whole in the factory, thus achieving "integration of parts into a whole".

[0048] 6) Transport the assembled components to the construction site;

[0049] 7) Lift the assembled components and adjust them to the design elevation;

[0050] 8) Then lift the middle beam section and adjust it to be assembled with the overall components on both sides. Make minor adjustments to the design elevation and complete the installation of the arch ribs and crossbeams.

[0051] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An installation structure for the crossbeams between the ribs of a steel-concrete composite arch bridge, characterized in that, include: An arch rib includes two outer arch ribs arranged vertically, two inner arch ribs arranged vertically, and multiple arch rib columns, wherein the multiple arch rib columns are connected between the two outer arch ribs and the two inner arch ribs. Two symmetrically arranged arch columns are connected to the lower outer arch rib and the lower inner arch rib, respectively. The top plate of the arch support column is connected at both ends to the upper side of the two arch support columns respectively; An outer crossbeam includes a top plate, a bottom plate, and a web connecting the top and bottom plates; the top plate is connected to the arch rib column via a first connector; the bottom plate is connected to the top plate of the arch column via a second connector; and... Side stops, which are connected to the top plate of the column on the arch.

2. The installation structure of the crossbeam between the ribs of a steel-concrete composite arch bridge as described in claim 1, characterized in that, The first connector consists of four first steel plates located on the same horizontal plane. One end of each first steel plate is connected to the arch rib column, and the other end is connected to the top plate of the crossbeam.

3. The installation structure of the crossbeam between the ribs of a steel-concrete composite arch bridge as described in claim 2, characterized in that, The side of the first steel plate that contacts the arch rib column is an arc-shaped surface, and the first steel plate is welded to the arch rib column.

4. The installation structure for the crossbeams between the ribs of a steel-concrete composite arch bridge as described in claim 3, characterized in that, The first steel plate is welded to the top plate of the crossbeam.

5. The installation structure of the crossbeam between the ribs of a steel-concrete composite arch bridge as described in claim 1, characterized in that, The second connector includes at least two second steel plates, which are symmetrically arranged on both sides of the top plate of the arch column; the upper side of the second steel plate is connected to the bottom plate of the crossbeam, and the lower side is connected to the top plate of the arch column.

6. The installation structure of the crossbeam between the ribs of a steel-concrete composite arch bridge as described in claim 5, characterized in that, The upper side of the second steel plate is welded to the bottom plate of the crossbeam, and the lower side is welded to the top plate of the arch column.

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