Construction control method capable of realizing unstressed line shapes of pushing construction beam bodies at high accuracy

Abstract

The invention discloses a construction control method capable of realizing unstressed line shapes of pushing construction beam bodies at high accuracy. The construction control method comprises the following steps of: 1) determining in-position real-time phases of a first batch of beam bodies; 2) determining the in-position elevation of the first batch of beam bodies; 3) determining the real-time phases of the first batch of welded beam bodies; 4) solving the conversion elevation of the first batch of welded beam bodies; 5) determining in-position real-time phases of a first batch of beam bodies; 6) determining the in-position elevation of the second batch of beam bodies; 7) determining the real-time phases of the second batch of welded beam bodies; 8) solving the conversion elevation of the second batch of welded beam bodies; and 9) repeating the steps 5) to 8) until all beam sections are spliced on a pushing platform. By the method, the in-position elevation of beam sections to be spliced in real-time phases can be conveniently determined to acquire the actual unstressed line shapes of the spliced beam bodies in interference phases and the deviation between the actual unstressed line shapes and theories, so that the unstressed line shapes of the pushing construction beam bodies can be realized at high accuracy.

Description

technical field [0001] The invention relates to the field of bridge girder construction, in particular to a construction control method for high-precision realization of stress-free alignment of a beam body in jacking construction. Background technique [0002] The beam alignment not only affects the appearance quality of the bridge and the comfort of operation, but also may directly relate to the overall stress status of the bridge, which is one of the key objectives of construction control [1-3] . The beam alignment can be divided into two types: the unstressed alignment of the beam and the stressed alignment of the beam. Once the stress-free line shape of the beam body, the boundary conditions and the external loads it bears are determined, the line shape and stress state of the beam body are determined accordingly. The stress-free line shape of the beam body is determined by the line shape (generally a straight line) of each beam segment that composes the entire length...

AI Technical Summary

Problems solved by technology

However, the existing methods for realizing the stress-free alignment of the entire length of the jacking beam basically ignore the influence of the above two deviations on the determination of the in-place elevation of the assembled beam section. [9] , but the steps and methods are difficult to understand and inconvenient to apply, so new methods need to be invented

Images