Laboratory simulation test method for researching underground water seepage obstruction caused by pile foundation

Abstract

The invention provides a laboratory simulation test method for researching underground water seepage obstruction caused by a pile foundation. The laboratory simulation test method comprises the following steps of 1, soil pavement and test preparation, 2, water injection pressurization, 3, self-weight consolidation, and 4, a laboratory seepage test. The laboratory simulation test method can conveniently and effectively observe and research underground water seepage in soil with a pile foundation, can research the influence produced by the number, depth and arrangement of pile foundations on underground water seepage by analysis of water head distribution in the test, can provide reasonable and feasible computing design parameters for design and construction, and is used for guaranteeing safety and efficiency of ground pit construction in the urbanization process.

Description

technical field [0001] The invention relates to a method in the technical field of building construction, in particular to an indoor simulation test method for pile foundations to hinder groundwater seepage. Background technique [0002] Deep foundation pits constructed in soft soil strata in coastal areas require precipitation. At the same time, coastal areas are economically developed areas with a high level of urbanization, so there will be a large number of existing building foundations around foundation pits to be excavated. Most of the buildings in these areas are high-rise buildings, and their foundation forms are mostly pile foundations. The existence of the pile foundation will change the groundwater flow path, hinder the seepage of groundwater, cause the water head on the water surface in front of the pile to rise, which will lead to different degrees of ground subsidence, which may cause ground cracks, which will affect the construction and operation safety of the...

AI Technical Summary

Problems solved by technology

This test has not yet overcome that the existing seepage test can only reflect one-dimensional seepage, and does not consider the influence of underground structures, especially the existence of pile foundations; A simulation device for blocking groundwater seepage by underground structures", which can simulate the influence of underground diaphragm walls on the precipitation process of aquifers

According to the self-report of the patent, the device directly supplies and discharges groundwater from the water inlet and drainage holes, so the device can only simulate the point-like supply and discharge of groundwater, which is different from the full-section seepage of groundwater under natural conditions. Therefore, this device cannot be directly used to simulate the influence of the existence of pile foundation on the seepage environment

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