Experimental Study on Mechanical Behavior of Hinge Joints in Synchronously Jacking Construction of a Real Skewed Plate Girder Bridge
As one of the common bridges,the hollow plate girder is always affected by jacking difference in the jacking construction process,which leads to obvious stress difference of hinge joints,and also affects the service performance of the bridge after construction.This article conducts experimental testing by using a real bridge jacking construction to study the impact of jacking construction deviation on the force performance of the hinge.The jacking scheme and test scheme were introduced in detail,and analyzes the deformation of the structure and the mechanical performance of the joint in the jacking process with the angle of the beam body,the longitudinal and transverse displacement,and the joint strain.The results show that for the hollow slab girder bridge of the same size,when the synchronous jacking error is±2 mm,the force safety of hinge joints can be ensured,which provides important basis for the quality control of bridge jacking construction and the design of hinge joints.
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