Anti-floating design and construction method for waterproof bottom plate of underground garage in rainstorm period

Abstract

The invention relates to the field of rainwater buoyancy pressure relief design and construction of an underground garage bottom plate, in particular to an anti-floating design and construction method for a waterproof bottom plate of an underground garage in a rainstorm period. The method is characterized by comprising the following steps of 1, confirming conditions for setting a rainwater pressure relief well; 2, calculating the anti-floating balance of the waterproof bottom plate; 3, calculating the water accumulation amount of the underground garage; 4, designing the rainwater pressure relief well; 5, designing a water seepage blind ditch; 6, selecting a submersible pump; and 7, constructing a rainwater pressure relief well system. According to the method, the rainwater buoyancy pressure relief well is arranged in an extra excavated pit in advance before backfilling of an underground garage foundation pit, and the common national quality problems such as protruding, cracking and water leakage of the waterproof bottom plate caused by rainwater buoyancy can be effectively prevented and controlled. Compared with traditional technologies such as an anti-floating plate method and a drainage pressure limiting method, the anti-floating cost is saved by 3 / 4 or more, the system is convenient to maintain, and the key technical problems that a buoyancy pressure relief system under the bottom plate is complex in construction, poor in pressure relief and waterproof effect, large in construction difficulty and the like can be solved.

Description

Technical field [0001] The present invention provides a waterproofing design and construction method of underground garage waterproof bottom plates during heavy rain, belonging to the intersection of underground garage waterproof bottom water anti-floating design and construction technology, suitable for non-anti-floating defense requirements, and ground-based stratum or lower layers Flashing Design and Construction of Waterproof Based on Underground Garage of Weak Water Soil. Background technique [0002] At present, my country is designed to have a waterproof bottom plate without a floating function on an underground garage that is not affected by groundwater. After investigation, all underground garage bases or lower shelves are weak water, and is designed as a waterproof bottom plate. The phenomenon of ridges, cracks, leakage water occurred in varying degrees during heavy rain, and seriously affects the use of underground garages. Function and structural security and durabili...

AI Technical Summary

Problems solved by technology

The water storage and pressure relief well is set at the water source gushing point on the edge of the emergency pool to solve the problem of insufficient buoyancy resistance of the underground floor structure due to factors such as geological conditions, groundwater not being completely clear, and uncontrollable construction processes during the construction process. The problem

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