Dragging, translating and lowering device and method for dismantling pier top beam section and pier

Abstract

The invention provides a dragging, translating and lowering device for dismantling a pier top beam section and a pier. The device comprises four supporting points, wherein each supporting point comprises four steel pipe piles, four steel pipe supporting frames, four transverse girders, four longitudinal translation beams, two longitudinal translation devices and two lifting and lowering systems; transverse translation beams can move in a transverse direction; the longitudinal translation devices are arranged at the upper parts of the transverse translation beams; the lifting and lowering systems are fixed on the longitudinal translation devices; the transverse translation beams are used for adjusting transverse positions of the lifting and lowering systems; the longitudinal translation devices are used for adjusting longitudinal positions of the lifting and lowering systems; and the lifting and lowering systems are used for lifting or lowering the pier top beam section and the pier. A dragging, translating and lowering method for dismantling the pier top beam section and the pier, provided by the invention, is capable of economically and efficiently solving a dismantling problem of a pier top box beam and pier structure under in the absence of the hoisting of a crane, suitable for dismantling the pier top beam section and the pier of a beam bridge or a bridge with a concrete girder and especially suitable for dismantling engineering for the pier top box beam and pier structure of a multi-span continuous beam bridge using a whole-span lowering dismantling technology.

Description

technical field [0001] The invention relates to the field of bridge demolition engineering, in particular to a dragging translational lowering device and method for dismantling pier top beam sections and bridge piers. Background technique [0002] Since the 1970s, concrete continuous girder bridges have been widely used in my country because of their good adaptability and economy, and tens of thousands of them have been built. During the use of these bridges, some bridges: due to "web cracking", "bottom plate cracking", "roof cracking" and "span mid-span deflection" and other self-inflicted diseases in the operation process deteriorated, the light ones affected the durability and beauty of the structure, and the serious Otherwise, it will limit the normal use of the bridge or cause structural safety problems. If the reinforcement fails, it can only be demolished. At present, the number of concrete girder bridges to be demolished in my country is increasing. [0003] Concre...

AI Technical Summary

Problems solved by technology

To realize the demolition of concrete continuous girder bridges in a safe, adaptable, fast, environmentally friendly, economical, and energy-saving manner (6 indicators) under complex conditions, there are major technical problems in "decomposition, hoisting, and safety control"

[0004] In the prior art, there is no general rapid demolition concrete continuous girder pier top beam section and pier removal construction method and its construction method under complex conditions (not blasting, there is traffic under the bridge, complex situations such as running water) for bridge demolition construction. device

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