Stress self-balancing and deviation rectification equipment for column system in use for push constructing bridge floor structure

Abstract

The invention relates to a force-bearing self-balancing device and a deviation correction method for upright columns in the jacking construction of bridge deck structures, and is characterized in that: a through-hole jack is fixedly installed at the head end and the top of the middle upright; steel strands pass through each through-hole jack , the end of which is fixed on the top of the end column, the head end is clamped by the anchorage of the through-hole jack of the head end column, and the cable wind rope connected in series with a turnbuckle is anchored to the ground on the top of the head end column. Adjust the protruding length of the core-type jack plunger on the head column, adjust the pre-tightening force of the steel strand, adjust the turnbuckle of the cable wind rope on the head column, so that the top displacement of the head column is zero, and the middle column The core-through jack anchorage is used to anchor the pre-tightened steel strand; when pushing the bridge deck structure on the tire frame to pass the column, adjust the plunger of the core-through jack at the top of the column to expand and contract, so that the top displacement of the column is zero. The invention has the advantage of changing the condition that each column bears force independently, so that the lower structure of the bridge forms a force-bearing self-balancing system.

Description

technical field [0001] The invention relates to a force-bearing self-balancing device and a deviation-correcting method for a vertical column in the pushing construction of a bridge deck structure. Background technique [0002] At present, the jacking construction technology is often used in bridge construction, that is, the bridge deck structure is first assembled on the tire frame at the side of the bridge deck structure design installation position, and then the assembled bridge deck structure is pushed and slipped along the top of each column. Install it at the designed location. When the bridge deck structure touches the top of the column during the pushing process, a horizontal thrust will be generated on the column due to friction, resulting in displacement of the top of the column. If the horizontal thrust exceeds the design standard of the column, the column will be damaged, which will affect the safety of the bridge and construction. pose a danger. In the existin...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of detecting and regulating the displacement of the top of the column due to horizontal thrust during the bridge deck structure jacking construction in the prior art, and to provide a new idea, simple device, convenient monitoring and operation, and traffic in the construction area can still be monitored. Maintained column system force self-balancing and correction device

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