Construction method of overall synchronous jacking up of large-span combined super-heavy eccentric slope angle steel structure

Abstract

The invention discloses a large-span combined overweight eccentric slope angle steel structure overall synchronous jacking construction method, which adopts the following steps: 1) constructing a corresponding number of jacking foundations on the floor according to a plurality of set jacking points; 2) After the floor is hardened, assemble and check the combined steel structure ground; 3) Install jacking equipment and implement jacking; 3.1) Carry out ground assembly of cross joists at multiple jacking points set; 3.2 ) Hoist the cross joist to the upper string ball of the net frame; 3.3) Concentrically weld the hemispherical hinge support at the bottom of the cross joist; 3.4) The combined steel structure is realized by the jack supporting the lower string ball of the grid frame to the net supported by the jacking frame 3.5) Implement synchronous jacking; 3.6) Carry out the supplementary installation of the grid support position ball and its connecting rods, and then fall back into place as a whole. The invention can greatly reduce high-altitude operations, and is safe and reliable.

Description

technical field [0001] The invention relates to a construction method for jacking up a steel structure, in particular to a construction method for synchronous jacking up of a large-span combined overweight eccentric slope angle steel structure as a whole. Background technique [0002] With the continuous development of construction technology, the grid structure has been rapidly developed and widely used in the past 30 to 40 years due to its characteristics of high rigidity, good integrity, good seismic performance, light weight, steel saving and good adaptability. At present, the traditional grid installation methods include high-altitude assembly method, lifting method, overall hoisting method and jacking method, which are several common construction methods. The high-altitude assembly method needs to consume a large amount of frame materials to build an operation platform, and the material rental and labor costs are relatively high. Although the overall hoisting and posi...

AI Technical Summary

Problems solved by technology

The high-altitude assembly method needs to consume a lot of frame materials to build the operation platform, and the material rental and labor costs are high

Although the overall hoisting and positioning method has the characteristics of simple construction, convenience, short construction period, and easy guarantee of project quality, the cost of the crane shift is too high, and the crane travel road needs to be dealt with. The construction cost is very high, and the key is that it is still limited by the site. , it is difficult to meet the construction requirements; although the overall hydraulic lifting is not limited by the site, the requirements for the original structure as a reliable hoisting fulcrum are relatively high, and the structural steel column cannot meet the bearing capacity requirements

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