Fabricated open caisson structure and construction method thereof

Abstract

The invention relates to a fabricated open caisson structure and a construction method thereof. A well wall structure is formed by vertical splicing of multiple segments of annular structures, each segment of annular structure is formed through end-to-end connection and closing of fabricated well piece structures, the adjacent fabricated well piece structures are connected through transverse connecting parts and longitudinal connecting parts to form a complete firm well wall structure, when the depth of the open caisson structure is large, the open caisson structure is segmented, each segmentis composed of one or multiple annular structures, the annular structures in each segment are connected and fixed, a bearing platform structure is arranged in each segment, and is in up and down symmetric, a jack is arranged between two bearing platform structure, during construction, the jacks play a role in pushing downwards the fabricated well piece structures, in the construction process, a center penetrating jack is arranged on the upper end of a steel strand, and is matched with the jacks between the bearing platform structures, sinking of the well wall structure is finished, the open caisson structure is not limited by the self weight, construction speed is high, the environment influence is small, and the cost is saved.

Description

technical field [0001] The invention relates to an assembled caisson structure and a construction method thereof, which are applied in the fields of underground structures and foundation engineering in civil engineering. Background technique [0002] With the acceleration of urbanization, land resources are becoming more and more tense, the supply of above-ground space is in short supply, and the price remains high. In some areas, there is no land available. The development and utilization of underground space provides possibilities for relieving urban land shortage, improving urban environment and traffic conditions, energy conservation and environmental protection, etc. [0003] The underground structure in the form of a shaft can be applied to the vertical connection passages and cylindrical foundations of underground spaces such as underground car garages, underground bicycle garages, underground reservoirs, underground granaries, underground storage spaces, and tunnels....

AI Technical Summary

Problems solved by technology

However, since its sinking mainly depends on its own weight to overcome the frictional resistance of the well wall, the removal of soil at the full section in the well reduces the end resistance and sinking, so the wall thickness is restricted by its own weight and sinking resistance. It is difficult to enter the ground, and the well wall is often made very thick, which is not economical and reduces the utilization of underground space; at the same time, because of the need to pour concrete in layers on site, the construction procedures such as binding steel bars, supporting formwork, pouring concrete and curing require Repeated many times, the internal structure affects the construction of the caisson structure, and the process is complicated, which affects the structural quality, construction period and cost

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