Double-layer step-by-step laminated construction method of ultrahigh and ultrathick prestressed concrete floor

Abstract

The invention belongs to a double-layer step-by-step laminated construction method of an ultrahigh and ultrathick prestressed concrete floor; the use number of support frames and the layer number of lower end bearing load layers are calculated according to half weight of a design thickness of the ultrahigh and ultrathick prestressed concrete floor; and or, according to the use number of the support frames and the layer number of the lower end bearing load layers, the ultrahigh and ultrathick prestressed concrete floor is divided into 2-4 successive cast layers. The construction method is simple, practical, time-saved, labor-saved, low in cost, few in workers, low in use level of the support frames, firm, stable, low in construction cost, fast in construction speed, short in construction period and good in effect.

Description

technical field [0001] The invention belongs to a superhigh superthick prestressed concrete floor slab double-layer step-by-step superimposed construction method. Background technique [0002] At present, the lower floors of high-rise and super high-rise buildings are often commercial facilities, and the upper floors are residential or office facilities. Due to their different functions, the structure of the buildings is different. This kind of building requires a transfer plate between the two structural forms to transfer the load of the superstructure of the building to its substructure. This kind of transfer board is often high in elevation and heavy in weight, and is also called super high and super thick prestressed concrete floor. This kind of conversion board adopts the conventional construction method, which requires a large amount of formwork support, and the support frame of the formwork even needs to be directly supported from the foundation floor of the building...

AI Technical Summary

Problems solved by technology

This kind of conversion plate adopts the conventional construction method, which requires a lot of formwork support, and the support frame of the formwork even needs to be directly supported from the foundation floor of the building to the conversion plate floor layer by layer, so as to bear this ultra-thick, ultra-thick The huge load of concrete floor slab pouring, and any single floor located at the lower end of the transfer slab cannot bear the overweight load of the transfer slab floor, resulting in large labor and material costs

Take the two-meter-thick transfer slab on the tenth floor above the supporting ground as an example. If the underground commercial facility has a 7-story structure, the construction method of integral support and integral pouring is adopted. The support frame needs to be supported from the base floor to the transfer slab layer by layer. , that is, it needs to be supported layer by layer from the foundation floor of the 7th floor underground to the transfer slab, so that the overweight load of the two-meter-thick transfer slab can be transferred layer by layer to the underground of the foundation floor, resulting in the installation and removal of the supporting frame. Huge, cost a lot of money, employ many people, slow construction speed and long construction period

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