Lightweight permanent tyre carcass for concrete filling

Abstract

The invention relates to a permanent carcass with light weight for filling concrete, comprising light-weight carcass (1). The light-weight carcass comprises upper shell (6), peripheral side shell (7) and lower shell (8). A closed cavity is formed by the upper shell (6), the peripheral side shell (7) and the lower shell (8). It is characterized in that it also comprises via tube (9), which is set in the closed cavity of light-weight carcass (1); at least a hole (2) for pouring of cast-in-place concrete formed by the via hole of via tube (9) is set in the light-weight carcass (1) to pass through surfaces of upper and lower shells of light-weight carcass (1); the hole (2) is large at the bottom and small at the top and there is stiffening oblique rod (10) or oblique plate (11) on the hole wall. In this way, it is suitable for hollow floor, roof, wall, base plate and fasting bridge of cast-in-place reinforced concrete or pre-stressed reinforced concrete, especially the hollow girder-less floor.

Description

(1) Technical field [0001] The invention relates to a lightweight permanent carcass for concrete filling. (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, the upper plate, the surrounding side walls, and the lower bottom form a polyhedral cavity, and the upper plate, the surrounding side walls, and the lower bottom contain fiber reinforcements. This formwork member has the characteristics of simple structure and convenient construction and transportation. After being a...

AI Technical Summary

Problems solved by technology

This formwork member has the characteristics of simple structure and convenient construction and transportation. After being applied to the floor, there is no force-bearing and force-transmitting member of the floor in the formwork member, especially when the formwork member is larger in size, the performance is better. Obviously, at the same time, the strength of the formwork components is not high, the rigidity is not large, the damage rate is relatively large, and the corresponding cost is relatively high. Therefore, it is urgent to develop a new type of lightweight permanent carcass for concrete filling.

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