Construction method of high-altitude large-cantilever concrete beam and slab structure

Abstract

The invention belongs to the field of building construction, and relates to a construction method of a high-altitude large-cantilever concrete beam and slab structure. The construction method involves a cast-in-place concrete large-cantilever structure beam and an assembled prefabricated concrete composite slab, and the cast-in-place height of the structure beam is reduced through reinforcement optimization; after the beam body concrete strength grade of the cast-in-place concrete large-cantilever structure beam reaches 100% or above of the design strength, a formwork supporting system for the cast-in-place cantilever structure beam is dismounted; the prefabricated concrete assembled composite slab is arranged by means of the cast-in-place concrete large-cantilever structure beam, and no supporting system is arranged on the lower portion of the prefabricated concrete assembled composite slab; and connecting steel bars of the composite slab and the structure beam are assembled, laminated layer concrete is poured, and finally the complete high-altitude large-cantilever concrete beam and slab structure is formed. According to the construction method of the high-altitude large-cantilever concrete beam and slab structure, the construction cost investment for mounting and dismounting a formwork is greatly saved, and the construction method has the advantages of low risk of high-altitude work, simple process, convenient operation, high construction speed, high quality standard, high construction mechanization degree and the like.

Description

technical field [0001] The invention belongs to the field of building construction, and in particular relates to the construction of high-altitude large overhanging concrete beam slabs. Background technique [0002] With the continuous development of the economy, people's requirements for personalization continue to increase. In the field of architecture, individualized and prominent architectural structures are constantly appearing, and the application of various high-altitude and large cantilever structures highlights the uniqueness of the architectural shape. It is currently the most common construction method to set outwardly expanding cantilever spaces on high-rise buildings. By setting personalized cantilever shapes, the requirements of individual buildings can be met. At present, the commonly used large cantilever concrete beam and slab structures mostly adopt the cast-in-place concrete process, such as Chinese patent 200910115141.7, which discloses the construction ...

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Problems solved by technology

At present, the commonly used large cantilever concrete beam and slab structures mostly adopt the cast-in-place concrete process, such as Chinese patent 200910115141.7, which discloses the construction method of the high-altitude cantilever structure of high-rise buildings. Cast-in-place construction with the load-bearing structure, the structure of the supporting frame is complicated, and a large cantilevered operating platform needs to be erected in a large area at high altitude, which brings many difficulties and inconveniences to the construction; it leads to the extension of the construction period and the addition of the formwork support system At the same time, it also increases the safety risk of high-altitude construction, especially during the process of erecting and dismantling high-altitude operation platforms, construction operators are prone to safety accidents caused by high-altitude falling, causing serious damage to society and families. adverse effects and losses

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