Prefabricated prestress heat-preservation external wall board, special mold and manufacturing method of external wall board

Abstract

The invention discloses a prefabricated prestress heat-preservation external wall board, a special mold and a manufacturing method of the external wall board and belongs to the field of building steel structures. The prefabricated prestress heat-preservation external wall board comprises a heat-preservation core board, reinforcement fabrics located on the two sides of the heat-preservation core board and concrete layers poured onto the reinforcement fabrics. A plurality of full-length heat-preservation core board ribs are arranged on the heat-preservation core board, and a plurality of concrete ribs staggered and mutually matched with the heat-preservation core board ribs are arranged on the concrete layers; and a shear-resisting connecting piece connected with the corresponding reinforcement fabric is arranged between every two adjacent heat-preservation core board ribs in a crossed mode, and prestressed tendons are arranged in a groove formed between every two adjacent heat-preservation core board ribs and / or a groove formed between every two adjacent concrete ribs. The prefabricated prestress heat-preservation external wall board is small in self weight, large in stiffness, good in heat-preservation effect, not prone to generating cracks under the wind load and the earthquake load and capable of reducing wet construction at a construction site.

Description

Technical field [0001] The invention relates to the field of building steel structures, in particular to a prefabricated prestressed thermal insulation external wall panel, a special mold and a manufacturing method thereof. Background technique [0002] Traditional concrete composite thermal insulation exterior wall panels are mainly composed of two-way diagonally inserted steel bars and upper and lower steel meshes to form a spatial force truss, with a certain thickness of EPS board (polystyrene foam board) or XPS board (extruded polystyrene) in the middle. Foam board) is used as the thermal insulation core layer, and then concrete is poured inside and outside respectively. [0003] The traditional concrete composite thermal insulation external wall panel is generally a three-layer flat structure. This structure has a large dead weight, which increases the load of the main structure and its force under earthquakes, which is not conducive to the seismic design of the structure. Un...

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Problems solved by technology

[0003] The traditional concrete composite thermal insulation exterior wall panels are generally three-layer slab structures. This structure has a large self-weight, which increases the load of the main body of the structure and its force under earthquakes, which is not conducive to the seismic design of the structure. Under the action of dynamic load during hoisting, it is easy to produce cracks, which affects product quality

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