Method for constructing connection joint between flat slab and post cap in reverse construction method
A construction method and technology of beamless slabs, which are applied in the processing of building materials, construction, building construction, etc., can solve the problem of reducing the bearing capacity, stiffness and punching resistance of beamless slabs, the easy formation of shrinkage cracks at connecting nodes, and the inverse Solve problems such as inconvenient construction and operation, and achieve the effect of avoiding cracks at joints, ensuring deflection and crack resistance, and meeting quality acceptance requirements
Active Publication Date: 2014-05-14
NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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Problems solved by technology
[0004] For the existing non-beam slab and column cap pouring construction in succession, the connection joints are prone to shrinkage cracks, which reduces the bearing capacity, stiffness and punching resistance of the non-beam slab, and the reverse construction operation is extremely inconvenient, reducing work efficiency The problem
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[0025] The construction method of the connection node between the beamless slab and the column cap in the reverse construction method proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. According to the following description and claims, the advantages and features of the present invention will be clearer. It should be noted that the drawings are in a very simplified form and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. For the convenience of description, the "up" and "down" mentioned below are consistent with the upper and lower directions of the drawings, but this cannot be a limitation of the technical solution of the present invention.
[0026] Combine Figure 2 to Figure 4 The construction method of the connection node between the beamless slab and the column cap in the rev...
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The invention provides a method for constructing a connection joint between a flat slab and a post cap in a reverse construction method, and relates to the technical field of concrete supporting components. The method aims to solve the problems that in the prior art, a flat slab and a post cap are poured and constructed successively, accordingly, shrinkage cracks are prone to being formed a connection joint, bearing capacity, rigidity and punching-resistant capacity of the flat slab are reduced, reverse construction operations are extremely inconvenient and operation efficiency is reduced. The method includes the following steps that firstly, an upper-layer steel bar and a lower-layer steel bare of the flat slab to be poured and an embedded steel bar, a horizontal hoop rib and radial inclined ribs of the post cap to be poured are distributed surrounding a reserved steel column; a formwork is erected, concrete is poured, the formwork is dismantled after the concrete is hardened, and the flat slab and the post cap, which are connected into a whole, are manufactured. Through the method, the flat slab and the post cap can be poured to form a whole and are connected more tightly, the punching-resistant requirement can be met and stress performance of the connection joint is improved.
Description
Technical field [0001] The invention relates to the technical field of concrete supporting members, in particular to a construction method for connecting nodes between a beamless slab and a column cap in a reverse construction method. Background technique [0002] Beamless slab is a structural form in which the slab is directly supported on walls and columns without beams. Double-layer bidirectional steel bars are often used. The installation of beamless slabs can increase the headroom of the room. In order to improve the load-bearing capacity, rigidity and punching resistance of the beamless slab, a column cap supporting the beamless slab must be installed at the top of the column. The column cap can reduce the calculation span of the beamless slab on the column, making the The bearing capacity is greater, the deflection and the crack resistance are better. [0003] Such as figure 1 As shown, in the rebar layout stage of the top-down construction method, the horizontal ring stirr...
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IPC IPC(8): E04G21/00
Inventor 谢德强吴欣建
Owner NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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