Steel pipe arch general assembly method

Abstract

The invention discloses a steel pipe arch general assembly method. The steel pipe arch general assembly method comprises the steps that S1, according to setting-out collected data in pre-installed computer software, setting-out of truss arch ribs is carried out on steel plates leveled on a general assembly site using total stations, theodolites and leveling measuring equipment, and wall stall structures are arranged at the positions of the arch ribs and the positions of steel pipe joints; S2, cushion blocks of different heights are arranged on ground steel plates to meet line style requirements of planes and vertical planes of the truss arch ribs; S3, the locating positions of upper and lower anchoring boxes of the arch ribs, built-in flanges of joints and inclined struts of the arch ribsare set out at the corresponding positions of jig frames, so as to ensure assembling accuracy of the general assembly of the arch ribs and reduce errors of the general assembly; and S4, a jig mould ofthe general assembly is detected, and a test report is issued after passing the test. According to the steel pipe arch general assembly method, the manufacturing and erection precision is improved, the design intention is realized, the equipment is simple, the material preparation and purchasing are easy, and the materials can be reused; and the construction difficulty is reduced, the productionefficiency is improved, and the economic benefits are promoted.

Description

technical field [0001] The invention relates to the technical field of general assembly of truss steel pipe arches, in particular to a method for general assembly of steel pipe arches. Background technique [0002] As a form of bridge, the steel pipe arch bridge has unique technical advantages such as large spanning capacity, high bearing capacity, economical cost, low maintenance and repair costs, and beautiful appearance. It has become one of the indispensable structural forms of modern architectural bridges. With the diversification of modern bridge designs, the span of steel pipe arch bridges is getting larger and the construction difficulty is getting higher and higher. This is a big "challenge" for the manufacturing and erection accuracy of steel pipe arch bridges, especially truss steel pipe arch bridges. [0003] Original process: use the arch rib unit in the factory to make-pre-assemble-sanding-painting-transportation. [0004] The process of bridge erection. Due ...

AI Technical Summary

Problems solved by technology

Due to the large section size of the steel pipe arch unit of the truss, the transportation cost of the overrunning member on the road is high, and it is relatively dangerous during transportation, and the paint on the surface of the steel box girder is seriously damaged

Due to the long transportation route, the possibility of component deformation is very high, which directly affects the accuracy of component erection

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