Construction structure and construction method of unbonded prestressed cast-in-place reinforced concrete hollow slab
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A technology of reinforced concrete and prestressed steel bars, applied in structural elements, building components, building structures, etc., can solve the problems of poor construction quality, low input cost, low construction labor, etc., and achieve fast construction progress, low labor intensity, The effect that the construction method is simple
Active Publication Date: 2016-02-10
SCEGC NO 6 CONSTR ENG GRP CO LTD
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But nowadays, there is no uniform, standardized and specific construction method to follow in the construction of unbonded prestressed cast-in-place reinforced concrete hollow slabs, so the actual construction inevitably has relatively random, irregular construction operations, low construction workers, Low input cost, poor construction quality and many other problems
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[0044] Such as figure 1 The construction structure of unbonded prestressed cast-in-place reinforced concrete hollow slab is shown. There are multiple rib beams arranged in parallel inside the unbonded prestressed cast-in-place reinforced concrete hollow slab. The construction structure includes horizontal supports The bottom formwork 1 on the formwork support system, the steel mesh on the lower layer of the slab above the bottom formwork 1, the steel mesh on the upper layer of the slab directly above the steel mesh on the lower layer of the slab, and a plurality of steel meshes arranged on the slab from left to right The inner formwork between the lower steel mesh sheet and the upper layer steel mesh sheet and multiple sets of anti-floating devices that respectively perform upper and lower limit on a plurality of said inner formwork, and a plurality of said inner formwork are rectangular hollow tubes 2 and They are all arranged on the same horizontal plane, and the vertical he...
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Abstract
The invention discloses an unbonded prestress cast-in-place reinforced concrete hollow slab construction structure and method. The structure comprises a base mold plate, a plate lower-layer rebar mesh sheet, a plate upper-layer rebar mesh sheet, a plurality of inner mold plates, and a plurality of groups of anti-floating devices for limiting the plurality of inner mold plates in an up-down manner, wherein a ribbed beam rebar cage is arranged between two adjacent inner mold plates; a prestress rebar is arranged in each ribbed beam rebar cage in a penetrating manner; ribbed beam stirrups form left and right limiting mechanisms of the inner mold plates; the construction method comprises the following steps: 1, installing the base mold plate, 2, surveying and setting out, 3, bonding the plate lower-layer rebar mesh sheet and the ribbed beam rebar cages, 4, arranging the prestress rebar in the penetrating manner, 5, installing the inner mold plates, 6, performing anti-floating processing, 7, bonding the plate upper-layer rebar mesh sheet, 8, vertically supporting side mold plates, 9, casting concrete, and 10, tensioning the prestress rebar. The method and the structure are reasonable in design, convenient to implement, low in investment cost, high in construction quality, and high in construction speed, and the construction process of a hollow slab can be easily and fast finished with high quality.
Description
technical field [0001] The invention belongs to the technical field of construction of unbonded prestressed cast-in-place slabs, and in particular relates to a construction structure and a construction method of unbonded prestressed cast-in-place reinforced concrete hollow slabs. Background technique [0002] With the continuous demand of the use function, modern buildings tend to have a large space and no indoor beams. The unbonded prestressed cast-in-place reinforced concrete hollow slab structure has the advantages of large span, light weight, heat preservation, sound insulation, free intervals, and large indoor net height. , fast construction and other characteristics, it is on the basis of the original ordinary prefabricated hollow floor structure, the hole diameter is appropriately enlarged, mainly relying on the pre-set unbonded prestressed steel bars to reduce the concrete near the neutral axis, so as to achieve neither reduction The bearing capacity can also reduce ...
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