Displacement control method for arch bridge lattice girder hoisting to eliminate temperature influence

A technology of displacement control and lattice beams, which is applied to bridges, arch bridges, bridge forms, etc., can solve the problems of uneven line shape, influence on construction accuracy, suspender force, and vehicle speed that cannot meet the design requirements, so as to eliminate the cumulative error value of displacement, Large practical engineering application value, the effect of avoiding the undulation of the bridge deck
CN111576229BActive Publication Date: 2021-08-31GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
Publication Date
2021-08-31

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Abstract

The invention discloses a method for controlling the hoisting displacement of an arch bridge lattice girder eliminating the influence of temperature. Taking the arch bridge with suspenders as the engineering object to carry out displacement control in the process, by introducing a temperature correction factor, the displacement of the hoisting construction of the arch bridge lattice girder is controlled, so as to eliminate the influence of temperature on the displacement of the lattice girder and reduce the temperature of the hoisting lattice girder The least impact is used as the objective function, and the displacement of the controlled bridge is closest to the reasonable bridge state as the constraint condition for analysis, which solves the problem that the displacement of the lattice girder is not easy to control due to the influence of temperature, and avoids the unevenness of the bridge deck and the driving comfort It greatly shortens the construction period of arch bridge lattice girder hoisting, reduces the risk of being forced to choose night construction, saves economic costs, has broad promotion and application prospects, and brings huge economic benefits. benefit.
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Description

technical field

[0001] The invention relates to the technical field of transportation bridge and culvert engineering, in particular to a method for controlling the hoisting displacement of arch bridge lattice girders that eliminates the influence of temperature. Background technique

[0002] my country is a big country of arch bridges, and it is also a strong country of arch bridges. The arch bridge with the largest span in the world is a 575m concrete-filled steel pipe arch bridge under construction in China. Jiangyi Bridge, China's 500-meter-level arch bridge is currently developing vigorously, and the corresponding construction technology is also constantly innovating and improving in practice. Whether the smoothness of the bridge deck affects the driving comfort and the life of the boom is a problem that must be considered during the construction process. There are many factors that affect the alignment of the bridge deck after the completion of the bridge. For the steel...

Claims

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