Construction method for fast load transfer of heavy concrete structure roof trusses
A technology of concrete structure and construction method, applied in building construction, building maintenance, construction, etc., can solve the problems of large lifting stroke of jacking device, large vibration of roof truss structure, narrow area, etc., and achieve stable and destructive transfer process. Small, holistic effect
Active Publication Date: 2015-05-20
PANGANG GRP ENG TECH
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Problems solved by technology
However, due to the implementation of this technical scheme, multiple devices need to be operated separately, and the cooperation between the devices is difficult. Using this scheme to transfer the load of the roof truss structure, the jacking stroke of the jacking device is large, and when the roof truss structure is lowered to the supporting bracket. , the vibration of the roof truss structure is large, which is easy to cause damage to the roof truss structure, especially the damage to the concrete prefabricated roof truss structure
[0007] The original concrete prefabricated roof truss structure, after long-term use, the roof truss structure is aging, and the area between two adjacent component roof trusses is narrow, it is difficult to reinforce the two adjacent component roof trusses
Apparently, the above-mentioned technical scheme for joists and columns for steel structure roof trusses cannot meet the load transfer requirements of large, heavy and easily damaged concrete prefabricated roof trusses
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[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0039] figure 2 It is a schematic diagram of the roof truss structure of an industrial factory building. Such as figure 2As shown, there is at least one set of roof truss support columns 2 in the lower part of the industrial plant, and each set of roof truss support columns 2 is composed of a plurality of parallel roof truss support columns 2 sequentially arranged on the foundation of the plant; The HDB truss is composed of two adjacent constituent roof trusses 1, such as image 3 As shown, two adjacent roof trusses 1 are fixed on the roof truss support columns 2 through base steel plates 5 .
[0040] Such as Figure 4 As shown, most of the industrial plants built in the middle and the end of the last century used concrete prefabricated roof trusses, and the load of a single roof truss 1 can reach more than 20 tons, and the area between two adjace...
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The invention discloses a construction method for fast load transfer of heavy concrete structure roof trusses. The construction method comprises the four steps that a roof truss bracket is built, an upward pulling device is manufactured and arranged between every two roof trusses, ejecting devices are selected and arranged on the roof truss bracket, and the ejecting devices are ejected to eject the roof truss structure to be at the preset height. The construction method is used for achieving the fast load transfer of the heavy concrete structure roof trusses, and the construction process does not need to be monitored with a complex monitoring technology; during implementation, the roof truss structure load transfer process is stable, vibration is small, and damage to the roof truss structure is rare.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for fast load transfer of a heavy concrete structure roof truss. Background technique [0002] When industrial enterprises update their production processes, they need to carry out adaptive transformation of existing industrial plants; in order to reduce the cost of renovation of the original plant, it is usually adopted to replace or reinforce the roof truss structure without removing the upper roof truss structure. Columns, and the method of changing the spacing of supporting columns to realize the adjustment of the original factory building structure. This method is also the joist and column pulling method collectively referred to in the technical field of building construction. [0003] Joist pulling column is the general term for supporting roof truss pulling column, joist wall removal and joist pulling column, which includes support stru...
Claims
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Inventor 陈毅周旭周俐付强黄亮思刘建刚雷勇彭波
Owner PANGANG GRP ENG TECH