Cavity member for hollow slab

Abstract

A hollow cavity component used for a hollow board comprises a plurality of pre-fabricated evacuated mould shells (1) and a structural motherboard (2), wherein, at least two evacuated mould shells (1) are arranged on the structural motherboard (2) at interval, the evacuated mould shells (1) arranged at interval and the structural motherboard (2) form a cast-in-place structural inner-rib mould chamber (3), and the evacuated mould shells (1) and the structural motherboard (2) are integrated as a whole; the characteristics lie in that: the inner-rib mould chamber (3) is internally provided with astretching part (4) connected with the evacuated mould shells (1) by stretching , the evacuated mould shells (1) have openings, each evacuated mould shell (1) is provided with at least one groove (5), at least two grooves (5) of the adjacent evacuated mould shells (1) are on the same line, the grooves (5) on the same line are overlapped with post-cast concrete strips (6) which are connected with the stretching part (4) in the alternate inner-rib mould chamber (3), the concrete strip (6) of the groove (5) is internally provided with at least one longitudinal reinforcement or steel strand (7) penetrating the overlapped concrete strips (6) and the stretching part (4), and a reinforcer (8) extends out of the evacuated mould shell (1) and is anchored inside the structural motherboard (2). The hollow cavity component is applicable to hollow boards, hollow floor systems, roofs, foundation motherboards, walls and hollow bridges made of cast-in-place reinforced concrete or prestressed reinforced concrete, in particular to hollow girderless floor systems.

Description

[0001] This application is a divisional application of the invention patent application with the filing date of November 22, 2004, the application number of 2004100972279, and the title of "A Cavity Member for Hollow Plate". (1) Technical field [0002] The invention relates to a cavity member for a hollow plate. (2) Background technology [0003] At present, most of the buildings with brick-concrete structure and reinforced concrete structure adopt prefabricated [0004] The hollow slab is used as the floor slab, which has the advantages of fast construction speed and low cost. However, because there is no firm connection between two adjacent prefabricated hollow slabs, only cement mortar is used to fill the joints, so the integrity is poor, which is not conducive to earthquake resistance, and cracks and water seepage often occur in the gaps. In order to solve the above problems, many buildings adopt the method of cast-in-place concrete floor slabs (solid and hollow). Alth...

AI Technical Summary

Problems solved by technology

However, during the handling and construction of this kind of cavity components, the structural bottom plate is prone to breakage, so the damage rate of the cavity components is large, the handling and construction are inconvenient, and the construction cost is increased. At the same time, its production is more troublesome and costly. Therefore, it is urgently needed to develop a new type of cavity member for hollow slabs.

Images