Construction method and construction technique for wide cross section beam formwork supporting system

Abstract

The present invention discloses a construction method for wide section beam formwork support systems. The method adopts a V-shaped formwork for support, and the dead weight of a frame-supported beam and construction load are transmitted to a structure of a lower layer and independently undertaken by a lower layer framework beam at a corresponding position. When the lower framework beam is insufficient in bearing capacity, the insufficient part is complemented through the measures of enlarging the section of the framework beam in advance and increasing reinforcing bars. Due to the V-shaped oblique support transmission force, the dead weight of a frame-supported beam and construction load are undertaken only by one layer of framework beam without putting up multilayer supports. Therefore, the methods gives full play to the bearing potential of the framework beam, does not need to occupy a large number of circulating materials, is small in the quantity of increased formworks, reinforcing steel bars, concrete and other auxiliary materials, relatively reduces cost, has obvious economic benefit, and simultaneously creates conditions for the construction of other processes, so as to shorten construction period as a whole.

Description

technical field [0001] The invention relates to a building construction method, in particular to a wide-section beam formwork support system and a construction method. Background technique [0002] In high-rise buildings, a transfer layer is usually provided to carry the increased load from above. The frame-supported beam of the transfer floor often has a relatively large section size and self-weight because it bears the upper load. Therefore, the design and construction of its formwork support is one of the key points of the entire frame-supported beam construction. [0003] At present, construction units usually use the following construction methods for the formwork support of frame-supported beams with different section widths: [0004] 1. As shown in Figure 1, when the section of the frame support beam 1 is high but the width is not large (close to the frame 2 beam of the next floor), it is generally supported by several floors 4 and beams through vertical support (sev...

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Problems solved by technology

[0007] Looking at the above construction methods, the frame support beams 1, 1′, 1” are constructed, no matter what their width is, the formwork is supported by the vertical pole 3, because the frame support beams have to bear a large load, Its width will be wider than the frame beam 2 on the lower floor, so there will always be some or even most of the vertical poles 3 supported on the floor 4, but since the bearing capacity of the floor 4 is generally much smaller than the load to be borne, it is necessary to support it floor by floor In this method, the unloading of the multi-layer structure can meet the force requirements, even if the strength of the beams and slabs (beams and floor slabs) meets the requirements, it cannot be dismantled, which requires more turnover materials, takes a long time, and has poor economic benefits

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