Construction method of beddings of foundation downward overturn beam and pile cap

Abstract

The invention relates to a construction method of beddings of a foundation downwards overturn beam and a pile cap, which utilizes a precast concrete unit to replace a brick tetal membrane, and comprises a precast unit production step, wherein the precast unit is a concrete member; and the construction method also has a control frame of the precast unit, and a supporting device of a precast slab frame is also arranged on the control frame. The invention has the construction method that: firstly, the large-area bedding of a foundation slab is constructed, then, the beddings of the downward turnover beam, a cushion platform earthwork and a bottom part are constructed, so that a large number of working surfaces can be provided in advance through a topdown construction method, a precast slab is quickly pressed into the brick tetal membrane, so the construction procedure and work amount are reduced, and the construction speed is effectively speeded up. Because the precast concrete unit replaces the brick tetal membrane, field mechanization and fabrication industrialization operations can be realized, and the construction method is in accordance with the development trend of the construction industry.

Description

technical field [0001] The invention relates to a construction method of a turned beam under a foundation and a bearing platform cushion. Background technique [0002] With the continuous development of the construction industry, raft foundations and box foundations have been widely used in the building foundation division. Basement use space. The traditional construction method of the downturned beam and cap is: excavate the earth to the bottom of the foundation floor cushion, then excavate the downturned beam and cap, pour the concrete of the downturned beam and cap cushion after the excavation is completed, and then start the brick membrane Masonry and plastering the brick membrane, and finally construct the foundation floor with large area cushion concrete. [0003] The traditional brick membrane construction method has the following disadvantages: [0004] 1) The lateral stress effect of the brick membrane is poor, and collapse, deformation and cracks often occur und...

AI Technical Summary

Problems solved by technology

[0004] 1) The lateral stress effect of the brick membrane is poor, and collapse, deformation, and cracks often occur under the lateral pressure of the surrounding soil

[0005] 2) The compactness of backfill soil on both sides of the brick membrane often fails to meet the specification requirements, mainly due to the brick membrane’s own strength and the limitation of curing time, and the lateral pressure of the earth during tamping causes the brick membrane to be damaged.

[0006] 3) The construction process is cumbersome and labor-intensive

[0007] In addition, traditional construction methods will bring great difficulties when constructing in areas with high groundwater levels and difficult precipitation, especially in muddy silty clay and other soils with high water content and poor permeability. , construction period, and cost input cannot be guaranteed

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