Construction method for bridge steel box basket arch

Abstract

The steel box and basket arch bridge constructing process with 500-ton crane boat and full framing includes the following steps: determining the structural shape, rise-to-span ratio, arch rib toe-in angle and arch rib section form; installing the steel box girder support and midspan steel box girder; hoisting side arch and sidespan steel box girder and finally hoisting arch center. During the process, a total station meter and water level gages are adopted for overall process measurement, and jacks in longitudinal, transverse and vertical directions are utilized to locate the arch ribs and the steel box girder precisely, so as to ensure correct structural form and construction safety. At the same time, ANSYS program for calculating the installation profile and sensors for structure and stress control are also utilized. The constructing process is simple and easy to control, and the steel box and basket arch bridge has high typhoon resistance and high efficiency.

Description

technical field [0001] The invention relates to a construction method of a large bridge, in particular to a construction method of a novel bridge steel box lifting blue arch using a 500-ton gondola and a full support. Background technique [0002] With the development of our country's economy, more and more long-span bridges need to be built, and the structural forms of bridges are becoming more and more novel. Conventional steel box hoisting arch installation methods generally adopt the construction scheme of cable crane and long-span gantry crane cable-stayed buckle cable. These construction methods all need to carry out high-altitude alignment on the sea where there are many typhoons and the daily tidal range at sea can reach 6 meters. In this way, it is difficult to control the structural alignment and weld quality, and it is also difficult to guarantee construction safety. Contents of the invention [0003] The purpose of the present invention is to provide a new con...

AI Technical Summary

Problems solved by technology

Conventional steel box hoisting arch installation methods generally adopt the construction scheme of cable crane and long-span gantry crane cable-stayed buckle cable. These construction methods all need to carry out high-altitude alignment on the sea where there are many typhoons and the daily tidal range at sea can reach 6 meters. In this way, it is difficult to control the structural alignment and weld quality, and it is also difficult to guarantee construction safety.

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