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Closing Method of Steel Arch Rib of Inwardly Inclined Triangular Arch Bridge

A technology of triangular arch bridge and arch rib is applied in the field of bridge construction, which can solve the problems that plague the construction of steel arch rib closing, and achieve the effect of reducing the amount of position correction, ensuring the accuracy of closing, and reducing the amount of misalignment.

Active Publication Date: 2017-10-13
THE 4TH ENG CO LTD OF CHINA RAILWAY 17TH BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this type of bridge was designed for the first time in China, any single-leg arch rib has longitudinal and transverse inclinations. There is no precedent for how to ensure the introverted multi-leg steel arch rib to close accurately at high altitude, which has become a problem for steel arches. Difficulties in the construction of Ribosaurus

Method used

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  • Closing Method of Steel Arch Rib of Inwardly Inclined Triangular Arch Bridge
  • Closing Method of Steel Arch Rib of Inwardly Inclined Triangular Arch Bridge
  • Closing Method of Steel Arch Rib of Inwardly Inclined Triangular Arch Bridge

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Embodiment Construction

[0028] As shown in the figure, the method for closing the steel arch ribs of the introverted triangular arch bridge of the present embodiment includes the following steps:

[0029] Step 1. Assemble the arch rib segments below the arch rib closing section 1: use a crane to lift the arch rib segments and then use the temporary support 4 to support the arch rib segments firmly, and then adjust the longitudinal and lateral inclination of the arch rib segments Angle, repeat the above steps to connect the arch rib segments below the arch rib closing section 1 in turn to form four inwardly inclined arch rib segments 2, and the ports of the four arch rib segments 2 are intersections; each arch rib segment The transverse inclination angle of the segment is 73.84°. The section of the arch rib segment is hexagonal, and the cross-sectional area gradually decreases from bottom to top. Each arch rib segment is welded in turn to form arch rib segment 2; There is a tendency to intersect; the ...

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Abstract

The invention discloses an inward-tilting triangular arch-bridge steel arch rib closing method which comprises the following steps: (I) assembling the arch rib sections below the arch rib closing section; (II) lifting the arch top section; (III) pretreating the arch rib closing section; (IV) lifting the treated arch rib closing section; (V) mounting the lifted arch rib closing section; and (VI) mounting the remaining arch rib closing sections. Through the method disclosed by the invention, the mounting stability of super-large and super-heavy structure high in the sky can be improved, the position deviation rectification and the alignment tolerance are reduced, the construction safety and closing accuracy are effectively guaranteed, reasonable force transfer of the arch rib structure is realized, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a closing method for bridge construction, in particular to a closing method for steel arch ribs of an inwardly inclined triangular arch bridge. Background technique [0002] With the development of society, the bridge structure not only satisfies the traffic function, but also exists in the society as a space art structure. Under the objective demand that people pay more and more attention to bridge aesthetics, bridge designers pay more attention to the continuous pursuit of arch bridge structure modeling, combined with modern structural calculation theory and the improvement of construction technology level, on the basis of traditional arch bridges, promote the arch structure. The form is constantly changing and renovating, which promotes the richness and variety of bridge shapes. There are more and more arch bridges with combined systems and novel special-shaped bridges. For example, the arch ribs of the completed Dagu Bridg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 窦新生历广飞王聪
Owner THE 4TH ENG CO LTD OF CHINA RAILWAY 17TH BUREAU GRP
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