Bottom section adding hydraulic jacking system and construction method

Abstract

The invention belongs to the field of steel structure construction, and particularly relates to a bottom section adding hydraulic jacking system and a construction method. The bottom jointing hydraulic jacking system is composed of a jacking reaction frame, an anti-overturning stabilizing frame, a jacking frame standard section, and a top platform. As the jacking elevation increases during jacking, the anti-overturning stability of the entire jacking system decreases. By arranging the anti-overturning stabilizing frame, the jacking system always maintains translational freedom degree releasingin the vertical direction and translational and rotational freedom degree constraints in other directions during jacking, anti-overturning stability of the entire jacking system is improved, a jacking transverse beam is connected with the standard section of the jacking frame through pin connection, and the jacking construction efficiency is improved.

Description

technical field [0001] The invention belongs to the field of steel structure buildings, and in particular relates to a hydraulic jacking system with bottom joints and a construction method. Background technique [0002] At present, the construction of large-scale space steel structure roof mainly includes component installation method, block hoisting method, cumulative slip method, integral / block cumulative lifting method and jacking method, among which jacking method is a fast and efficient construction method. The method is often used in the construction of large space steel structure roofs with a small construction height (15m-20m). [0003] However, the existing conventional jacking methods are divided into two categories: one is the combination of temporarily assembled jacking frames and jacks, and the joint method is bottom joints; the other is the use of strip pads and square pads and jacks. Combination, the purpose of jacking is achieved by continuously increasing t...

AI Technical Summary

Problems solved by technology

[0004] The main disadvantage of the first type of jacking method: because the bottom joint method is adopted, the hydraulic jack is placed at the bottom of the jacking frame. As the jacking height increases, the anti-overturning stability of the jacking frame during the jacking process also decreases Then it dropped sharply; the main disadvantage of the second type of jacking method: because the purpose of jacking is achieved by continuously adding steel pads at the top, there is a lack of stable connection between the steel pads. As the jacking height continues to increase, It will also greatly reduce the stability of its jacking system. At the same time, it is necessary to manually move the jack every time the pad is added, which greatly reduces the construction efficiency.

Images