Reverse Construction Method of Adjacent High and Low Floors (Spans) of Basement

Abstract

The invention provides a reverse construction method for adjacent high and low floors (bays) of a basement. The reverse construction method comprises the following steps: S1, performing slope excavation to a high-floor (bay) area along a boundary of the high and low floors (bays); S2, after the excavation is over, moving the outer edge line of a to-be-cast boundary wall through a distance of the sum of the thicknesses of a waterproof layer and a waterproof protection layer to form a brick form edge line, and laying a brick form along the brick form edge line; S3, after laying of the brick form is over, backfilling the high-floor (bay) side of a slope-excavated part of a boundary area with cyclopean concrete; S4, after backfilling of the cyclopean concrete is over, performing waterproof construction on the low-floor (bay) side of the brick form; S5, after the waterproof construction is over, constructing a low-floor (bay) foundation slab; and S6, simultaneously performing casting construction of the boundary wall and a high-floor (bay) foundation slab. According to the reverse construction method, no slope support construction is needed, the work amount and backfilling amount of earth rock excavation are reduced, the cost of waterproof steel plates is lowered, the construction period is shortened, and the construction cost is lowered.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a reverse construction method for adjacent upper and lower floors (spans) of a basement. Background technique [0002] In basement construction, high and low floors or high and low spans are often formed at the junction, and there is a junction exterior wall at the junction of the basement. The conventional construction sequence is to carry out the slope support of the interface after the excavation of the earthwork, then carry out the construction of the low-rise (span) foundation floor, and then carry out the construction of the interface wall. After the wall construction is completed, start from the outer wall from the inside to the outside Construction of mortar screed layer, exterior wall waterproof layer, and waterproof protective layer is carried out, and finally the rubble concrete in the junction area is backfilled to the elevation of the high-rise (span) cushion lay...

AI Technical Summary

Problems solved by technology

Conventional construction methods are complex, costly, and time-consuming. In order to speed up the construction progress and save engineering costs, more efficient construction methods are needed

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