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 gallery drainage and space called fei cao seepage-proofing. According to the technical scheme, a gallery is composedof a top plate, a bottom plate, a building outer wall and side concrete window walls; a space called fei cao is formed between the building outer wall and a foundation pit boundary; a trench is formedbetween the bottom plate and the building outer wall; a gravel hydrophobic cushion layer is laid under the space called fei cao, in the trench and under the bottom plate; a geotechnical film is arranged between the bottom plate and the gravel hydrophobic cushion layer; an inverted filter layer is arranged on the right outer sides of the side concrete window walls; a ground seepage-proofing layeris laid on the top of the space called fei cao; a water proof layer is arranged in the middle of the space called fei cao and horizontally penetrates through the space called fei cao; the water prooflayer is connected to a drainer pipe; the drainer pipe is inbuilt close to the building outer wall; the outlet of the drainer pipe is arranged in the gravel hydrophobic cushion layer; a water outlet is laid in the building outer wall; a water collection pipe is laid in the water proof layer and is connected to the water outlet; and the gallery is connected to a water reservoir. The underground structure anti-floating system can effectively and comprehensively reduce underground water buoyancy and improve the anti-floating capacity of an underground structure.

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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