Existing building anti-floating layer pressure leakage pressure relief device and its construction method

Abstract

The invention relates to the field of anti-floating technology of existing buildings, and discloses a pressure leakage device and a construction method for the pressure leakage under the anti-floating layer of the existing building. The pressure relief device adapts to the threshold value. When water accumulates under the bottom of the anti-floating layer and the water pressure exceeds the threshold value of the self-operated pressure regulating valve, the self-operated pressure regulating valve will open, and the groundwater will be discharged through the pressure relief pipe and the diversion pipe under the action of pressure. It is exported to the outside of the building to realize the continuous pressure relief of the pressure leakage under the anti-floating layer of the existing building, so as to ensure that the floor of the existing building will not crack and leak due to excessive water pressure; The water pressure is balanced to ensure the safety and stability of the building, and it is not easy to float or sink.

Description

technical field [0001] The invention relates to the field of existing building anti-floating technology, in particular to a pressure leakage device and a construction method of the existing building anti-floating layer. Background technique [0002] When the self-weight of the building and the soil covering the bottom cannot offset the buoyancy generated by the groundwater, the bottom of the existing building is likely to float up due to the action of water pressure, which will cause the supporting structure of the building to be deformed under compression. In severe cases, the supporting structure will be destroyed, affecting the stability of the building; Moreover, since the post-pouring belt, construction joints or cracks formed in the later stage of the raft are weak links, the bottom of the raft is subjected to water pressure for a long time, and the post-pouring belt, construction joints or cracks of the raft further develop, resulting in the raft of the basement of the...

AI Technical Summary

Problems solved by technology

[0002] When the self-weight of the building and the soil covering the bottom cannot offset the buoyancy generated by the groundwater, the bottom of the existing building is likely to float up due to the action of water pressure, which will cause the supporting structure of the building to be deformed under compression. In severe cases, the supporting structure will be destroyed, affecting the stability of the building; Moreover, since the post-pouring belt, construction joints or cracks formed in the later stage of the raft are weak links, the bottom of the raft is subjected to water pressure for a long time, and the post-pouring belt, construction joints or cracks of the raft further develop, resulting in the raft of the basement of the existing building. Or cracking and water seepage, there is a safety hazard

Moreover, most of the existing anti-floating treatment methods use drilling to release the water pressure on the floor of the building, and then apply anchor rods for anti-floating treatment. However, when the groundwater level rises later, the water pressure will always resist the floating floor. Due to the pressure effect, the problem of cracking and leakage of the bottom plate of the anti-floating layer has not been solved

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