Preformed hollow member for spatial structured building over

Abstract

Disclosed is a prefabricated hollow member for floor systems of spatial structure, which comprises an upper bottom (4), side panels (5), a lower bottom (6), and a reinforcement member (7), the upper bottom (4) and the side panel (5) enclose a formwork (9), the formwork (9) and the lower bottom (6) interconnect into a shuttering member with a closed cavity (8), the reinforcement member (7) is arranged in the cavity (8), characterized in that the reinforcement member (7) is provided with at least one hollow aperture (10) opening outward on the upper bottom (4) or / and side panels (5), a reinforcement article (12) projects from the center position of the upper bottom (4).

Description

[0001] This application is a divisional application of an invention patent application with an application date of March 4, 2003, an application number of 03118131.7, and a title of "a cast-in-place reinforced concrete hollow floor". (1) Technical field [0002] The invention relates to a prefabricated cavity component for a space structure floor. (2) Background technology [0003] Reinforced concrete floors in construction projects have structural forms such as prefabricated perforated panels or solid roof panels and densely ribbed floors. Prefabricated perforated panels and solid roof panels are heavy in weight, cumbersome in construction, labor-intensive, high in cost, and limited in application. For densely ribbed floor slabs, the detachable all-plastic formwork is usually used for concrete pouring, and the formwork is removed after the concrete is solidified. Although the floor structure formed in this way can reduce its own weight, it also has the following disadvantag...

AI Technical Summary

Problems solved by technology

Prefabricated perforated panels and solid roof panels are heavy in weight, cumbersome in construction, labor-intensive, high in cost, and limited in application

For densely ribbed floor slabs, the detachable all-plastic formwork is usually used for concrete pouring, and the formwork is removed after the concrete is solidified. Although the floor structure formed in this way can reduce its own weight, it also has the following disadvantages: 1. 1. After removing the formwork, the forming performance of the floor slab will be affected. For example, the upper part of the floor slab is prone to cracks, and the lower part of the slab is not a complete plane, and the integrity is poor; ; 3. The cost of the project is high. Although the formwork is removed and used for turnover, the depreciation fee for each piece is more than 120 yuan each time, and it can only be used 4-6 times; 4. The indoor roof needs to be suspended, plastered, etc. larger

However, after the use of such formwork components, cracks between the cast-in-place concrete hidden ribs and formwork components are prone to appear, and at the same time, the reinforcing ribs cannot participate in the force transmission well.

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