An anti-floating system for underground structures integrating corridor drainage and fertilizer tank anti-seepage

Abstract

The invention relates to an underground structure anti-floating system integrating corridor drainage and fertilizer tank seepage prevention. The technical plan is: a corridor is composed of the roof, bottom plate, building exterior wall and side concrete window wall. There is a fertilizer trough between the building exterior wall and the boundary of the foundation pit; there is a trench between the bottom plate and the building exterior wall. Under the fertilizer trough, A gravel hydrophobic cushion is laid in the trench and under the bottom plate. There is a geomembrane between the bottom plate and the gravel hydrophobic cushion. The right outer side of the side concrete window wall is a reverse filter layer; the top of the fertilizer tank is covered with a ground anti-seepage layer, and the middle part of the fertilizer tank is covered with a ground anti-seepage layer. A water-proof layer is provided, and the water-proof layer runs horizontally through the fertilizer tank. The water-proof layer is connected to the sewer pipe. The sewer pipe is buried close to the exterior wall of the building. The outlet of the sewer pipe is located in the gravel hydrophobic cushion; it is laid inside the exterior wall of the building. As for the water outlet, a water collection pipe is laid in the water-proof layer, and the water collection pipe is connected to the water outlet; the corridor is connected to the reservoir. The invention can comprehensively and effectively reduce the buoyancy of groundwater and improve the anti-floating ability of underground structures.

Description

technical field [0001] The invention belongs to the field of civil engineering rock soil foundations, and in particular relates to an anti-floating system for an underground structure integrating corridor drainage and fertilizer tank anti-seepage. Background technique [0002] Underground anti-floating research has a long history, and there are many specific measures for anti-floating: a. The passive anti-floating methods include structural counterweight method, anti-floating anchor method, and anti-floating pile method. The structural counterweight method is further divided into structural roof weight, structural bottom weight, and structural edge weight. However, in many cases, the structural weight will cause the ground elevation of the underground structure to drop due to the limitation of the floor height, thereby increasing the water buoyancy, and the anti-floating effect is not obvious; relatively speaking, the anti-floating anchor rod and anti-floating pile method wi...

AI Technical Summary

Problems solved by technology

Active anti-floating measures are mainly to change groundwater conditions, but this may affect surrounding buildings and cause uneven settlement of surrounding buildings; in addition, underground passages are easy to be blocked and difficult to maintain, and the subsequent maintenance costs are quite high

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