Method for constructing foundation slab embedded with concrete supports

Abstract

The invention discloses a method for constructing a foundation slab embedded with concrete supports, which comprises the following steps of: digging to the bottommost support surface of soil body, binding support reinforcing steel bars, and embedding foundation slab joint bars; arranging an isolating layer between surrounding purlines and a building envelope; arranging a water stopping structure at a place, which is close to the building envelope, of the support; after binding of the support reinforcing steel bars is finished and pre-embedded parts are embedded, pouring the concretes; after the supports are maintained to the required strength, digging to the bottom of the soil body, pouring plain concretes as a cushion layer, building a bracket for the foundation slab reinforcing steel bars, binding the foundation slab reinforcing steel bars, and connecting a sleeve with the pre-embedded foundation slab reinforcing steel bars on the supports; and pouring foundation slab concretes so as to embed the concrete supports in the foundation slab. The method disclosed by the invention can effectively reduce the length of the end, which has no support cantilever, of the lower part of a retaining wall, thereby preventing demolishing and slag removal works of the bottommost support, facilitating deformation control of foundation pits as well as material saving, and accelerating construction speed of the foundation slab.

Description

Technical field [0001] The invention belongs to the technical field of building underground engineering, and relates to a construction method of a foundation slab, in particular to a construction method of an ultra-thick foundation slab, in particular to a construction method of a concrete support embedded in the foundation slab at the lowest level of the foundation slab. Background technique [0002] The conventional method of foundation slab construction is to remove the support after the slab is poured. When the foundation floor is too thick, the bottom support is located within the elevation of the floor. According to conventional practices, after the cushion is poured, the bottom support needs to be removed before pouring the floor. At this time, because the unsupported cantilever end of the lower part of the enclosure wall is too long, it is not conducive to the deformation control of the foundation pit. In addition, the dismantling and cleaning of supports are not conduci...

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