Bridge sliding block for bridge incremental launching construction

Abstract

The invention discloses a bridge sliding block for bridge incremental launching construction, which comprises a base, a jacking structure is mounted in the middle of the upper surface of the base, a deviation rectifying structure and a sliding block assembly are mounted on the jacking structure, a guide beam is placed on the upper surface of the sliding block assembly, and the guide beam is movably connected with the sliding block assembly; by arranging the second jack, the fixed block and the connecting column, when the sliding assembly deviates in the transverse direction, the second jack drives the connecting column to move front and back, the connecting column can drive the fixed block to move front and back, and therefore the first jack can be driven to move front and back, and the first jack can drive the sliding block assembly to move front and back; and the displacement deviation is adjusted in the transverse direction, so that transverse deviation displacement of the main beamin the incremental launching construction process can be prevented, limitation of longitudinal movement of the main beam, damage to a beam body and standard exceeding of deviation between the centerline of the main beam and the designed axis caused by excessive transverse displacement are avoided, and the bridge construction quality is ensured.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a bridge slider used for bridge pushing construction. Background technique [0002] The jacking construction method can use smaller power equipment to erect heavier beams, saving a lot of brackets and hoisting equipment. In particular, this construction method can ensure the normal passage of the crossed route and cross insurmountable deep ditches and rivers. At present, The jacking construction method has been widely used in the construction of bridges such as continuous beams, arch bridges, cable-stayed bridges, and self-anchored suspension bridges. However, there are still some deficiencies in the sliders used in the jacking device, such as: [0003] In the prior art, due to factors such as the unbalanced power of the jacking jack, the construction deviation of the slideway and the flatness of the main beam, etc., the main beam will have a lateral displacement duri...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, due to factors such as the unbalanced power of the jacking jack, the construction deviation of the slideway and the flatness of the main beam, etc., the main beam will have a lateral displacement during the jacking construction process, and the excessive lateral displacement will cause the longitudinal displacement of the main beam. If the movement is limited and the beam body is damaged, it may even cause the deviation between the centerline of the main beam and the design axis to exceed the standard, which will seriously affect the quality of the beam erection.

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