Hollow carcass for filling cast-in-situ concrete

Abstract

The invention relates to a hollow matrix for filling cast-in-situ concrete, which comprises a hollow matrix (1) and an arm brace (2), wherein the outer wall (3) forms the hollow matrix (1) provided with a cavity (4) in an enclosed form. The hollow matrix for filling the cast-in-situ concrete is characterized in that at least one outer wall (3) is the outer wall of an overlapping layer; a precast layer (5) in the overlapping layer is arranged on an inner layer of the outer wall (3); an outer layer of the outer wall (3) is a cast-in-situ layer (6); an upper outer wall (3 ) or a lower outer wall (3) is the outer wall of the overlapping layer; a reinforcement (17) is arranged inside the cavity (4) and is a precast hollow member bar; two ports of the hollow member bar are communicated with exteriors of the upper outer wall (3) and the lower outer wall (3) to form a communicated hole (16); a bottom outer wall (3) is the outer wall of the overlapping layer; and the arm brace (2) is arranged on the bottom outer wall (3). The hollow matrix for filling the cast-in-situ concrete is suitable to be used by cast-in-situ reinforced concrete or prestressed reinforced concrete hollow slabs, floor, roof covers, wall bodies, foundation slabs and bridges and is particularly suitable to be used by hollow girderless floor.

Description

[0001] This application is a divisional application of an invention patent application with an application date of September 2, 2004, an application number of 200410155278.2, and a title of "a hollow matrix for filling cast-in-place concrete". (1) Technical field [0002] The invention relates to a hollow matrix for filling cast-in-place concrete. (2) Background technology [0003] 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...

Images