Structural component for cast-in-situs reinforcing bar concrete

Abstract

A member for cast-in-situ reinforced concrete is composed of two half parts(1) buckled and fixed. Said two half parts are basin shaped with at least one of terrace die(3) or concave die(4), hole(5), negative angle(6), protruded module(7), protruded stripped block(8) or branch pipe(9). It can be used for various hollow and beamless building roofs of cast-in-situ reinforced concrete or pre-stressed reinforced concrete, basic baseboard, wall and bridges.

Description

[0001] This application is a divisional application of an invention patent application with an application date of December 22, 2002, an application number of 02158266.1, and a title of "a component for cast-in-place reinforced concrete". (1) Technical field [0002] The invention relates to a component for cast-in-place reinforced concrete. (2) Background technology [0003] At present, in the prior art, the hole-forming components of the cast-in-place hollow floor slab are permanent mandrels, such as paper tubes, plastic tubes, metal bellows, and lightweight materials for mandrels. These tubular mandrels or components are mainly considered to evacuate the concrete and reduce the weight of the floor slab. For example, the patent No. ZL99249775.8 applied by the applicant is a utility model patent named "fiber-reinforced thin-walled tube for filling cast-in-place reinforced concrete". It consists of a hard thin-walled tube and plugs at both ends. The two ends of the hard thi...

AI Technical Summary

Problems solved by technology

In this way, the production of the hollow tube is troublesome and the cost is relatively high, which undoubtedly increases the cost of the hollow floor.