Lightweight hollow-core mould

Abstract

The invention relates to a lightweight hollow-core mould, which comprises a lightweight filling block body (1), and is characterized in that the lightweight filling block body (1) is provided with at least two parallel holes of which the openings are one-way; the holes (2) open outwards along the direction of the axis side to form the openings; a rib plate (3) integrated with the lightweight filling block body (1) is arranged among the holes (2); and hole sealing pieces (4) for plugging the openings to form sealing cavities are arranged at opening positions or at surfaces of the opening positions or at outsides of the opening positions of the holes (2). Therefore, after the lightweight filling block body is provided with the at least two parallel through holes, the self weight of the core mould is reduced in a vast scale and a large number of core mould materials are saved. After the rib plate (3) integrated with the lightweight filling block body is arranged among the through holes, a structural load-bearing rib is formed among the through holes so as to enable the core mould to be free from crushing in the process of transportation, palletizing, installation and construction.

Description

(1) Technical field [0001] The invention relates to a lightweight hollow core mold. (2) Background technology [0002] At present, the cast-in-place concrete hollow floor is a widely used floor structure. The lightweight permanent tire molds filled in it include various hollow tubes and boxes, and the boxes are hollow or solid. For example, the patent No. ZL99249798.1, which the applicant applied for on November 29, 1999, is a utility model patent named "fiber-reinforced thin-walled member for reinforced concrete filling", which discloses a thin-walled formwork member, including an upper plate, The surrounding side walls, the lower bottom, and the upper plate, the surrounding side walls and the lower bottom form a polyhedral cavity. Another example is the patent No. ZL00203695.9 applied by Liang Jun, Shijiazhuang City, Hebei Province on February 23, 2000, and the name is called "combined concrete hidden rib floor cover plate" utility model patent, which discloses a formwork...

AI Technical Summary

Problems solved by technology

However, after being applied to the hollow floor, the cast-in-place concrete ribs formed between the cavity formwork members are all rectangular cast-in-place concrete ribs, and their mechanical performance is not very reasonable, so it is often necessary to increase the cross-sectional size of the cast-in-place concrete ribs , increase the amount of steel bars and concrete, and increase the cost of the floor. At the same time, in the evacuated part of the cavity formwork, the strength and stiffness of the hollow floor are relatively poor, and the ability to withstand concentrated loads is relatively low. Therefore, the development of a A new type of cavity formwork member is urgently needed

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