CN111335139A

CN111335139A - Temporary connection structure for steel pipe arch ring segments

Info

Publication number: CN111335139A
Application number: CN202010271578.6A
Authority: CN
Inventors: 任伟; 陈克坚; 胡玉珠; 何庭国; 徐勇; 陈列; 游励晖; 胡京涛; 谢海清; 黄毅; 韩国庆; 杨国静; 赵天翔
Original assignee: China Railway Eryuan Engineering Group Co Ltd CREEC
Current assignee: China Railway Eryuan Engineering Group Co Ltd CREEC
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2020-06-26

Abstract

The invention discloses a temporary connection structure of steel pipe arch ring sections, which comprises a plurality of ear plates positioned outside the arch ring sections, wherein all the ear plates are arranged at intervals along the circumferential direction of the arch ring sections, the ear plates are fixedly connected with the outer walls of the steel pipes of the arch ring sections, a plurality of corbels are also connected between the ear plates and the outer walls of the steel pipes, and the ear plates of two adjacent arch ring sections are connected through bolts. The ear plates and the brackets are arranged on the outer wall of the steel pipe of the arch ring segment, so that the internal structure of the steel pipe is not influenced, the flow of concrete is not influenced during the pressure injection of the concrete in the pipe, and the compactness of the concrete in the pipe is ensured; all the lug plates are arranged at intervals along the circumferential direction of the arch ring sections, so that the mounting workload of the connecting bolts is reduced, the lug plates are arranged outside the steel pipe, the alignment mounting operation is more convenient, the high-altitude operation time is shortened, and the construction risk is reduced; after the permanent welding seam of the arch ring segment is welded, the temporary connecting structure can be directly cut off, and steel can be recycled, so that the energy conservation and environmental protection are facilitated.

Description

Temporary connection structure for steel pipe arch ring segments

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a temporary connection structure for steel pipe arch ring segments.

Background

The steel pipe truss structure of the traditional steel pipe concrete arch bridge (or steel pipe concrete stiff skeleton) is usually constructed by adopting a cable hoisting inclined pull buckling hanging method, steel pipe truss sections are hoisted symmetrically on two sides, after each section is hoisted in place, the section is temporarily connected through a flange plate, a buckling anchor cable is installed after the section is temporarily connected in place, then, permanent welding seams among the sections are welded, and section installation is completed. For example, as shown in fig. 1 to 2, the first segment 1 and the second segment 2 are connected by a temporary connection structure 3 (flange) provided with a bracket 31, and the flanges of the two segments are connected by bolts 4 and welded by a permanent weld 5 after the anchor cable is installed.

However, practical application finds that the flange structure adopted at present has some defects, firstly, the number of bolts on the flange is too large, and the bolts are arranged in the steel pipe, so that the alignment and the bolt installation during the hoisting of the overhead cable are not facilitated, and particularly, when the wind power of overhead operation is large, the steel pipe is particularly difficult to align and install, so that the construction risk of the overhead operation is increased; secondly, the structure of the inner flange plate inside the steel pipe is complex, the inner space of the steel pipe is occupied greatly, and when concrete is injected into the pipe in the later stage, the compactness of the concrete at the position has problems.

Disclosure of Invention

The invention aims to: aiming at the problems of more bolts of the traditional flange plate, difficult alignment and incompact pressure injection of concrete in the pipe in the prior art, the temporary connection structure of the steel pipe arch ring segments is provided.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a steel pipe arch ring section temporary connection structure, includes a plurality of otic placodes that are located the arch ring section outside, all the otic placode along the circumference interval of arch ring section sets up, just the otic placode with the steel pipe outer wall fixed connection of arch ring section the otic placode with still be connected with a plurality of brackets, adjacent two between the otic placode of arch ring section is connected through the bolt.

The temporary connection structure comprises the ear plates and the brackets which are connected through the bolts, and the ear plates and the brackets are arranged on the outer wall of the steel pipe of the arch ring section, so that the internal structure of the steel pipe is not influenced, concrete in the pipe does not have any influence on the flowing of the concrete during pressure injection, and the compactness of the concrete in the pipe is ensured. Simultaneously, all otic placodes set up along the circumference interval of hunch circle segment, the installation work load of connecting bolt that has significantly reduced, and the otic placode is arranged in the outside of steel pipe, is convenient for more counterpoint installation operation, has shortened high altitude construction time, has reduced the construction risk. In addition, after the permanent welding seam welding of two adjacent arch ring sections is completed, the temporary connection structure can be directly cut off, and steel can be recycled, so that the energy conservation and the environmental protection are facilitated.

As a preferable aspect of the present invention, all of the ear plates are symmetrically disposed along the circumferential direction of the arch ring segment.

As a preferable scheme of the invention, a plurality of brackets are symmetrically arranged on each ear plate.

As a preferable scheme of the invention, the ear plate and the bracket are respectively welded and connected with the outer wall of the steel pipe.

In a preferred embodiment of the present invention, the ear plate and the bracket are both steel plates.

As a preferable scheme of the invention, 4 lug plates are symmetrically welded along the circumferential direction of the arch ring sections, each lug plate is connected with the outer wall of the steel pipe through 3 brackets, each lug plate is provided with 2 bolt holes, and two adjacent arch ring sections are connected through bolts.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

Drawings

Fig. 1 is a schematic view of a conventional flange for segment connection.

Fig. 2 is a schematic cross-sectional view of a segment joint using a conventional flange.

Fig. 3 is a schematic structural view of segment connection using the temporary connection structure according to the present invention.

Fig. 4 is a schematic cross-sectional view of segment joining using the temporary connection configuration of the present invention.

Icon: 1-first section, 2-second section, 3-temporary connection configuration, 31-bracket, 32-ear plate, 4-bolt, 5-weld.

Detailed Description

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

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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 invention and are not intended to limit the invention.

Example 1

As shown in fig. 3-4, a temporary connection structure 3 for steel pipe arch ring segments comprises a bracket 31 and lug plates 32, wherein the lug plates 32 and the bracket 31 are both steel plates, and the lug plates 32 of two adjacent arch ring segments are connected through bolts 4.

Be provided with 4 along the circumference symmetry of arch ring section (first section 1 and second section 2) otic placode 32, every otic placode 32 with the steel pipe outer wall welded connection of arch ring section, every otic placode 32 with still welded connection has 3 between the steel pipe outer wall bracket 31. Each of the ear plates 32 is provided with 2 bolt holes, and the first segment 1 and the second segment 2 are temporarily connected by bolts 4.

According to the invention, only 8 bolts 4 are needed to be arranged (the number of bolts is reduced by 50% compared with that of flange plate connection), so that the installation workload of the bolts 4 is reduced, and the steel pipe is convenient to align and install. And whole interim coupling mechanism 3 sets up in the outside of steel pipe, does not have any influence to the flow of concrete when the intraductal concrete is pressed and is annotated, has guaranteed the closely knit nature of intraductal concrete. After the first section 1 and the second section 2 complete the welding of the permanent welding seam 5, the temporary connecting mechanism 3 can be cut off, and steel can be recycled, so that the energy conservation and the environmental protection are facilitated.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a steel pipe arch ring section temporary connection structure, its characterized in that includes a plurality of otic placodes (32) that are located the arch ring section outside, all otic placode (32) along the circumference interval of arch ring section sets up, just otic placode (32) with the steel pipe outer wall fixed connection of arch ring section otic placode (32) with still be connected with a plurality of brackets (31) between the steel pipe outer wall, adjacent two be connected through bolt (4) between otic placode (32) of arch ring section.

2. A temporary coupling structure of a steel pipe arch segment according to claim 1, wherein all of the ear plates (32) are symmetrically disposed along the circumference of the arch segment.

3. A temporary coupling structure of a steel tube arch segment according to claim 1, wherein a plurality of said brackets (31) are symmetrically provided on each of said ear plates (32).

4. A temporary coupling structure of a steel tube arch segment according to claim 1, wherein the ear plate (32) and the bracket (31) are welded to the outer wall of the steel tube, respectively.

5. A temporary connection structure of a steel pipe arch segment according to any one of claims 1 to 4, wherein the ear plate (32) and the corbel (31) are both steel plates.

6. A temporary coupling structure of a steel pipe arch segment according to any one of claims 1 to 4, wherein 4 of said ear plates (32) are symmetrically welded along the circumference of said arch segment, each of said ear plates (32) is connected to the outer wall of said steel pipe by 3 of said corbels (31), and each of said ear plates (32) is provided with 2 bolt holes, and two adjacent arch segments are connected by bolts (4).