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A kind of steel arch construction method

A construction method and technology for steel arches, which are applied to the field of steel arches of arch bridges, can solve problems such as the inability of various span arch bridges to meet construction needs, the inability to adapt to the construction needs of various linear arch bridges, and the inability to arbitrarily adjust the linearity of the arch axis.

Active Publication Date: 2020-10-09
中交二公局第六工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the steel arch construction method provided by the invention is to overcome the problem in the prior art that under the bad construction conditions such as weak foundations and deep mountains and canyons, the construction of various span arch bridges constructed by conventional schemes cannot meet the construction needs; the second purpose is to overcome In the prior art, the tie rod Bailey steel arch frame cannot adjust the linearity of the arch axis arbitrarily, and cannot adapt to the construction needs of various linear arch bridges.

Method used

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  • A kind of steel arch construction method
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  • A kind of steel arch construction method

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Embodiment 1

[0029] Such as Figure 1-4 As shown, a steel arch construction method at least includes the following steps:

[0030] 1) Assembling the steel arch frame at least includes the following steps: first, horizontally assemble the horizontal bridge of the steel arch frame in groups; secondly, hoist and erect the horizontally assembled steel arch frame; Install rebar 1 and distribution beam 2 on the arch foot of the frame to complete the assembly;

[0031] 2) Installing the steel arches assembled in step 1) at least includes the following steps: first, install and position the steel arches group by group; secondly, fix the arch feet of the positioned steel arches; On the top of the steel arch frame, lay steel strips 3, wedge-shaped steel plates 4, horizontal beams 5 and bottom mold 6 in sequence from bottom to top, and install side molds on one side of the bottom mold to complete the installation;

[0032] 3) pouring concrete on the main arch ring of the steel arch frame installed ...

Embodiment 2

[0036] On the basis of embodiment 1, a kind of steel arch construction method at least comprises the following steps:

[0037] 1) Assembling the steel arch frame at least includes the following steps: first, horizontally assemble the horizontal bridge of the steel arch frame in groups; secondly, hoist and erect the horizontally assembled steel arch frame; Rebar 1 and distribution beam 2 are installed on the arch foot of the frame to complete the assembly; said step 1) The specific steps of horizontal assembly are: first release the large sample in proportion according to the level of the catenary line of the arch shaft, and determine the size according to the large sample. The position and rotation angle of each Bailey sheet are made with positioning cards to form an assembled tire frame; secondly, the assembly is carried out from the arch foot at one end of the steel arch to the arch foot at the other end. When assembling, the lower chord between the standard segments of the s...

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Abstract

A method for constructing steel arch frame of an arch bridge includes such step as assembling steel arch frame, installing assembled steel arch frame, pour concrete on main arch ring of steel arch frame, dismantling steel arch frame, assembling steel arch frame, assembling steel arch frame, assembling steel arch frame, assembling steel arch frame, assembling steel arch frame, assembling steel archframe, assembling steel arch frame and assembling steel arch frame. The invention solves the problem that in the prior art, under bad construction conditions such as deep mountain and canyon, the construction of multi-span arch bridges with conventional construction schemes cannot meet the construction needs and the tied Bailey steel arch frame cannot adjust the linearity of the arch axis arbitrarily, which cannot meet the needs of construction of various linear arch bridges, The invention is applicable to the construction of various span arch bridges under poor construction conditions such as soft foundation, deep mountain canyon and the like, and cannot adopt conventional scheme construction. The arch axis alignment can be adjusted by adjusting the length of connecting rods, and the curve alignment of various arch bridges can be adjusted, and the arch bridge can be used for the construction needs of various alignment arch bridges.

Description

technical field [0001] The invention belongs to the technical field of steel arch frames of arch bridges, and in particular relates to a construction method of steel arch frames. Background technique [0002] There are many methods for splicing steel arch frames of existing arch bridges, such as the assembly method of universal rods, but the construction period of universal rod assembly is very long, and the construction process has a great impact on the environment, and it will be affected by environmental factors such as flood seasons. thus affecting the construction. [0003] Under the existing circumstances, under the unfavorable construction conditions such as weak foundation and deep mountains and canyons, the construction of various span arch bridges constructed by conventional schemes cannot meet the construction needs. [0004] At the same time, the existing tie-bar Bailey steel arch frame cannot adjust the linearity of the arch axis arbitrarily, and cannot meet th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 黄维科马小龙张志荣张利斌冯品昌
Owner 中交二公局第六工程有限公司
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