Composite prefabricated floor slab for fabricated building

Abstract

The invention discloses a composite prefabricated floor slab for a fabricated building, and belongs to the technical filed of fabricated buildings. The composite prefabricated floor slab comprises a concrete prefabricated plate, composite filling rings are preburied on the inner side of the concrete prefabricated plate at intervals, a center tension anchor rebar system is arranged between every two adjacent composite filling rings, reinforcing bearing beams are arranged on the inner side of the concrete prefabricated plate at intervals, and bearing beam rebar trusses are arranged in the reinforcing bearing beams. According to the composite prefabricated floor slab, the composite filling rings are adopted to effectively decrease the overall weight of the prefabricated floor slab, meanwhile,the concrete pouring amount is decreased, the soundproof and heat-insulation effects of the prefabricated floor slab are reinforced, a complete rebar supporting system is formed by tension anchor rebar meshes, the center tension anchor rebar systems and the bearing beam rebar trusses, the work load of the prefabricated floor slab is borne, lots of work procedures, labor, costs, materials and timeare saved, and the easy-machining property of prefabricated components and the building overall quality performance are improved.

Description

technical field [0001] The invention relates to the technical field of prefabricated buildings, and more specifically relates to a composite prefabricated floor for prefabricated buildings. Background technique [0002] Prefabricated buildings refer to buildings assembled on site with prefabricated components. Its characteristics include several aspects: a large number of building parts are produced and processed by workshops; assembly of prefabricated components is completed on site; integrated design of construction and decoration, Construction; design standardization, management informatization; conforming to the requirements of green buildings. The current prefabricated building construction mainly has the following problems: 1. The prefabricated laminated slabs and on-site cast-in-place floors are used to complete the prefabricated building floors at the construction site. The basic maintenance period is required, the formwork and support system are required, and the fo...

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Problems solved by technology

The basic maintenance period is required, the formwork and support system are required, and the follow-up work can only be carried out after reaching the design strength. The time and cost are the main components of the on-site installation period of the prefabricated building. 2. Partially used embedded casing grouting In the installation process of anchorage, there are also insufficient positioning of the anchorage steel bars of the grouting sleeve and insufficient reserved length, and the grouting anchorage is not solid. The design load requirements must be achieved only after the design strength of the grouting material is reached, and more temporary support systems are required to cooperate. Installation also takes up relatively high construction cost and period. 3. The pull-out test of the threaded connection part of the grouting sleeve of small-sized steel bars fails to meet the connection quality requirements of the application technical regulations. 4. The grouting of the sleeve grouting operation is not full and other phenomena, unable to meet the design anchoring strength requirements, the above-mentioned problems are mainly caused by the on-site installation and connection parts of the prefabricated building, which leads to the fact that the overall quality of the prefabricated building cannot be equal to that of the cast-in-place building.

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