Construction method of unbonded prestressed large-diameter reinforced concrete thin-walled circular pool

Abstract

The invention discloses a construction method for a non-bonded prestressed large-diameter reinforced concrete thin-walled circular pool. The following operations are performed in sequence: measuring and setting out on the construction site according to the design requirements of the pool; carrying out earthwork excavation according to the measuring and setting out; Construction; pool bottom steel bar binding and formwork support; pool bottom plate concrete pouring; pool wall formwork support and steel bar binding; pool wall unbonded prestressed reinforcement laying and binding; pool wall concrete pouring and curing; pool wall unbonded prestressed steel bars Prestressed tensioning; unbonded prestressed steel anchorage end plugging of the pool wall; waterproof sealing treatment of the cup mouth of the pool bottom; pool full water test. When constructing a circular pool, it can effectively reduce the wall thickness of the pool, reduce the construction cost of the pool, and reduce the difficulty of construction under the premise of ensuring that the circular pool meets the design and use functions.

Description

technical field [0001] The invention belongs to the technical field of concrete building construction, and in particular relates to a construction method for an unbonded prestressed large-diameter reinforced concrete thin-walled circular pool. Background technique [0002] Large-scale sewage treatment plants generally need to be equipped with large biological pools, secondary sedimentation tanks, and primary sedimentation tanks, and the shape of the above-mentioned pools is preferably circular in cross-section, and some pools need to be 60m in diameter and 7m in height. When designing a circular pool structure in the traditional way, the vertical design generally uses ordinary reinforced concrete to meet the force requirements, while in the horizontal design, because the diameter is often too large, the temperature difference between day and night and the change in seasonal temperature difference will cause great stress. Hoop tensile stress, and ordinary reinforced concrete ...

AI Technical Summary

Problems solved by technology

When designing a circular pool structure in the traditional way, the vertical design generally adopts ordinary reinforced concrete to meet the force requirements, while in the horizontal design, often because the diameter is too large, the temperature difference between day and night and seasons will cause great changes. hoop tensile stress, and ordinary reinforced concrete is difficult to meet the requirements of strength and crack resistance at the same time, in order to achieve these two indicators, it is necessary to increase the wall thickness, dense reinforcement

This will increase the construction cost of this type of large pool body, resulting in waste of resources, and also increases the difficulty of construction

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