Method for reducing deformation of asymmetric steel suspension structure
A technology of structural deformation and asymmetry, applied in building construction, processing of building materials, construction, etc., can solve problems such as concrete cracks and excessive deformation, and achieve the effect of avoiding cracks and ensuring construction quality
Active Publication Date: 2011-05-25
CHINA CONSTR FOURTH ENG DIV
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[0003] The technical problem to be solved by the present invention is to overcome the defect that the existing construction method will produce excessive deformation and cause cracks in the concrete, and provide a method for reducing the deformation of the asymmetrical steel suspension structure by controlling the pouring sequence of the concrete
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[0019] Asymmetrical steel suspension structure steel suspension section such as figure 1 As shown in the figure, the elevation position of each asymmetrical steel suspension section is shown as the area divided by the thick solid line in the figure. The first suspension section 8 includes 8 to 19 floors, the 15th floor is a waist truss floor, the 11th to 16th floors are in-plane symmetrical floors, and the 8th, 9th, 10, 17, 18 and 19th floors are in-plane asymmetric floors. Among them, the 8th and 17th floors are symmetrical with each other, the 9th and 18th floors are symmetrical with each other, the 10th and 19th floors are symmetrical with each other, and the 14th floor is a cast-in-place concrete floor. The second suspension section 9 includes floors 18 to 29, the 25th floor is a waist truss floor, the 21st to 26th floors are in-plane symmetrical floors, and the 18th, 19, 20, 27, 28 and 29th floors are in-plane asymmetric floors, Among them, the 18th and 27th floors are s...
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The invention discloses a method for reducing deformation of an asymmetric steel suspension structure. For the whole asymmetric steel suspension structure system, middle truss layer concrete is poured in a floor in each steel suspension section; and after the concrete strength in the layer achieves 50 percent of the design strength, a symmetric floor is poured, wherein the pouring principle in the plane of the symmetric floor is that: symmetric angles are poured first, and the rest asymmetric angles are poured. According to the stress characteristics of the asymmetric steel suspension structure, by controlling and regulating the concrete pouring sequence among steel suspension section floors and in the planes of the steel suspension section floors, namely the loading sequence, to reduce the deformation of the asymmetric steel suspension structure, the whole stress of the whole suspension structure is symmetric, uniform and stable, overlarge deformation of the steel suspension structure caused by nonuniform loading of upper concrete load is avoided, and the floor concrete is prevented from cracking due to overlarge deformation of the steel suspension structure to ensure the concrete construction quality.
Description
technical field [0001] The invention relates to the technical field of construction, in particular to a method for reducing deformation of asymmetrical steel suspension structures in building construction. Background technique [0002] With the continuous increase of the national economy and the rapid progress of urban construction, the asymmetric suspension structure, as a new type of complex structural system, is more and more in the building construction. According to the stress characteristics of its structure, the construction process has strict requirements on the stress and deformation of the steel suspension structure and the strain of the steel structure itself. The pouring sequence is bound to lead to excessive deformation of the asymmetrical steel suspension structure, which directly leads to the generation of concrete cracks in the floor slab. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to overcome the defec...
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IPC IPC(8): E04G21/00E04G21/02
Inventor 陈云柱林里王勇
Owner CHINA CONSTR FOURTH ENG DIV