Formwork component

Abstract

The invention relates to a shuttering means, which comprises an upper plate (1), and a surrounding sidewall (2), wherein, the upper plate makes an open mouth basin shape means with the surrounding sidewall. The invention is characterized in that the basin shape means is provided with a lateral chamfer (3), the surroundings sidewall (2) basin mouth has a snubby edge (7) outward, at least two shuttering means are arrayed at intervals, which are connected together by support and pull parts (23) into a unitizing shuttering means, and the adjacent shuttering means makes a die cavity. When applied in the cast-in-place floor, the shuttering means makes a cast-in-place reinforcement at the chamfer place for the arranging of the lateral chamfer, which can effectively eliminate the stress concentration phenomenon at the corner place, which is at the crossover position between the cast-in-place upper plate of the floor and the cast-in-place secret rib, and avoids the produce of crack, and improves the mechanical property of the floor; or the shuttering means makes a cast-in-place reinforcement or flange girth on the under part of the secret rib at the chamfer place, which can greatly improve the mechanical property of the floor. The invention has the advantages of reaching the purpose for the characteristic, and being suitable for using in the hollow floor, roof, wall body, foundation mat, and hollow bridge with the cast-in-place reinforced concrete or prestressing reinforced concrete, particularly suitable for using in hollow flat slab.

Description

[0001] This application is a divisional application of the invention patent application with the filing date of December 15, 2003, the application number of 200310124196.7, and the title of "a formwork component". (1) Technical field [0002] The present invention relates to a formwork member. (2) Background technology [0003] At present, most of the buildings with brick-concrete structure and frame structure use prefabricated hollow-core slabs as floor slabs. This kind of floor slab has the advantages of fast construction speed and low cost, but because there is no firm connection between two adjacent prefabricated hollow-core slabs , Only cement mortar is used to fill the gaps, so not only the integrity is poor, which is not conducive to earthquake resistance, but also cracks and water seepage often occur, causing great inconvenience and psychological pressure to the residents. In order to solve the above problems, many buildings have adopted the method of cast-in-place c...

AI Technical Summary

Problems solved by technology

However, at the lateral corners of the formwork members in this floor slab, such as the intersection of the cast-in-place concrete hidden rib and the cast-in-place concrete upper slab, the stress on the floor is more complicated, the stress is more concentrated, and cracks are easy to occur, and even cracking damage, therefore, the development of a new formwork member has been urgently needed

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