Installation construction method for tied-arch bridge arch rib

Abstract

The invention discloses an installation construction method for a tied-arch bridge arch rib. Arch ribs are pre-assembled before being transferred to a construction site to be assembled, so that the arch ribs conveyed to the construction site meet the construction requirement, the construction progress is guaranteed; the assembling and positioning accuracy of the arch ribs on the construction siteis high, and the assembling quality is guaranteed. When the tied-arch bridge arch rib is installed, a plurality of arch rib sections needed for assembling the arch rib are machined in a factory, so that the size of the arch rib sections meets the design requirement of the arch rib. After the arch rib sections are machined, scanning is conducted, simulated assembling is conducted on the scanned arch rib sections on a computer, a pre-assembled scanning model is compared with a BIM three-dimensional model built on the computer, the positions which do not conform to the BIM three-dimensional modelare found out, and the arch rib sections corresponding to the positions are trimmed. Therefore, the situation that the arch rib sections which do not meet the design requirements are conveyed to a construction site, so that a situation that the arch rib sections do not meet the requirements only during formal assembly, and the normal construction progress is influenced is avoided.

Description

technical field [0001] The invention relates to a construction technology of an arch bridge, in particular to a method for installing and constructing arch ribs of a tied arch bridge. Background technique [0002] As a member of the arch bridge family, the tied arch bridge has the general characteristics of arch bridges and has its own unique characteristics. It is a bridge type that combines the advantages of arch and beam. It combines the two basic structural forms of arch and beam to bear the load together, and give full play to the structural performance and combined effect of beam bending and arch compression. The horizontal thrust of the arch end is borne by the tie rod, so that the support of the arch end does not produce horizontal thrust. The arch ribs need to be installed during the construction of the tied arch bridge. The arch ribs are usually processed in the factory and then transported to the construction site for assembly. However, sometimes during on-site c...

AI Technical Summary

Problems solved by technology

The arch ribs need to be installed during the construction of the tied arch bridge. The arch ribs are usually processed in the factory and then transported to the construction site for assembly. However, sometimes during on-site construction, it is found that a certain section of the arch rib does not meet the construction requirements, so it needs to be replaced. The section of the arch rib, which will greatly extend the construction period

Furthermore, when the arch ribs are assembled at the construction site, the positioning is inconvenient, resulting in low assembly accuracy and affecting the assembly quality

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