The Construction Method of Elevator Shaft Foundation Pit Water Seepage and Drainage Combined with Comprehensive Treatment

Abstract

The invention provides a construction method combined with comprehensive treatment of water seepage and drainage in the foundation pit of an elevator shaft. The integral box formwork is used as a pit-in-pit membrane template, and an impermeable concrete structure layer is poured between the soil body and the box mold to form a concrete membrane. side wall. The bottom of the foundation pit adopts a prefabricated integral sump with permeable holes, which is drained through the suction pipe of the self-priming pump; the side wall of the foundation pit adopts a prefabricated plate with vertical and horizontal grooves without dismantling drainage, and the drainage pipe with holes is outsourced with reverse filter geotextile The flexible bandage is fixed in the longitudinal groove, and the combination of wall-mounted drainage strips assists in drainage, which can improve the drainage efficiency of the side wall; the waterproof membrane of the side wall is laid with a shaped guide frame, which is easy to operate and has high construction efficiency. Reduced labor intensity. The invention can greatly speed up the construction progress, increase the stability of the slope, enhance the safety of the construction of the elevator shaft foundation pit, realize automatic drainage during the construction period and the operation period, and at the same time adopt the method of mechanical paving to save labor costs, and has better economic and technical benefits.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a construction method with comprehensive waterproofing and drainage, convenient on-site construction, and good structural integrity combined with water seepage prevention and drainage in the foundation pit of an elevator shaft, which is suitable for the construction project of the foundation pit of an elevator shaft. Background technique [0002] With the continuous development of my country's national economy, more and more high-rise buildings are designed. Most of the high-rise buildings are equipped with elevators. Since the buried depth of the elevator foundation pit is lower than that of the foundation trench, the elevator foundation pit is often dewatered after the foundation pit is dewatered. Insufficient precipitation in the pit or because the soil layer is a water-permeable layer leads to water seepage on the side wall and bottom of the elevator foundation pit, which serio...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of my country's national economy, more and more high-rise buildings are designed. Most of the high-rise buildings are equipped with elevators. Since the buried depth of the elevator foundation pit is lower than that of the foundation trench, the elevator foundation pit is often dewatered after the foundation pit is dewatered. Insufficient precipitation in the pit or because the soil layer is a water-permeable layer causes water seepage on the side wall and bottom of the elevator foundation pit, which seriously affects the normal construction of the elevator foundation pit

[0003] In practical application, water is rarely discharged from the aqueduct, and the stagnant water on the side wall of the foundation pit still seeps out in a large area, which cannot be effectively drained, resulting in water leakage from the side wall of the foundation pit, and the leakage water from the side wall of the foundation pit has not been properly treated , affecting the stability of the foundation pit, making it impossible to continue construction downwards, seriously affecting the progress of the project and the quality of the construction

The paving of waterproof membranes is generally done manually, and the paving effect is affected by the workers' skills, and the paving efficiency is low, which requires more labor costs.

[0004] In summary, although the existing construction has achieved good construction results under suitable working conditions, there are still deficiencies in improving site construction efficiency, saving support structure materials, and enhancing structural integrity.

Images