Stereo bearing shuttering for reinforced concrete

Abstract

Disclosed is a three-dimensional force-bearing form for reinforced concrete, which comprises an upper top board (1), peripheral side panels (2) and a lower bottom (3), the upper top board (1), the peripheral side panels (2) and the lower bottom (3) are linked each other to form a polyhedral closed cavity (4), the cavity (4) is provided wit at least one rod unit (5), the invention is characterized in that the rod unit (5) is a curved rod, a folded-line rod, a cable, an equal-cross-sectional straight rod, a variable cross-sectional straight rod, an upper-opened hollow rod or their combination, or the combination of a variable cross-sectional hollow straight rod with the above-mentioned rod units, the upper top board (1) is provided with a hanger (39) or / and handle (36), a bottom edge (26) is projected from the lower bottom (3), the hanger (39) is arranged on the upper top board (1) at the center position. The invention can be applied to hollow concrete structures such as roofs, foundation floors, concrete walls and bridges, especially to project of hollow floor slabs.

Description

[0001] This application is a divisional application of an invention patent application with an application date of April 30, 2002, an application number of 200510114605.4, and a title of "a three-dimensional load-bearing formwork for reinforced concrete". (1) Technical field [0002] The invention relates to a three-dimensional load-bearing formwork for reinforced concrete. (2) Background technology [0003] At present, most buildings with brick-concrete structure and frame structure use prefabricated hollow-core slabs as floor slabs, which have 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 (so...

AI Technical Summary

Problems solved by technology

Similarly, this kind of plastic formwork only considers that the top plate of the formwork is not easy to be damaged or only meets the requirements of construction compressive loads. Although the hollow rods with conical downward openings can be conveniently stacked and transported, it does not consider the formwork. It is designed as the main load-bearing component and combined with the cast-in-place concrete structure to form a common three-dimensional force-bearing structural system to resist various complex external forces, especially the up-and-down pull force and horizontal shear force that cannot be resisted in the formwork.

Images