Foundation pore pressure conditioning and processing method

Abstract

The invention discloses a method for regulating and treating foundation pore pressure. The method comprises the following steps that: a circle of vertical anti-seepage curtain or two vertical anti-seepage curtains are arranged around a foundation of a building or on the positions of slope toes on two sides of the foundation along the line direction; the bottom surface of the building or the foundation is paved with a surface layer horizontal anti-seepage layer in hermetic connection with the vertical anti-seepage curtains; a pressure fluid regulation system which can lead fluid media capable of regulating pressure into a foundation treatment range surrounded by the vertical anti-seepage curtains and the surface layer horizontal anti-seepage layer. The method provided by the invention has the advantages of low construction cost, short construction period, the capability of develop the natural strength of foundation soil to the utmost extent, etc. As the method is better in the effect of controlling post-construction settlement, post-construction settlement can be reduced to the utmost extent and regulated actively. Therefore, the method can meet the strict requirements on post-construction settlement in engineering.

Description

technical field [0001] The invention relates to a foundation treatment method in the field of civil engineering, in particular to a foundation pore pressure adjustment treatment method. Background technique [0002] The "Foundation Delayed Consolidation Treatment Method" disclosed in Chinese Invention Patent No. 03130321.8 was proposed by the inventor. This method is to set up a circle around the foundation of the building or set up two slopes along the direction of the road at the slope toe position on both sides of the roadbed. Vertical anti-seepage curtain, and lay a layer of horizontal anti-seepage layer on the bottom surface of the building or roadbed that is sealed and connected with the vertical anti-seepage curtain, and the vertical anti-seepage curtains along the length of the building or on both sides of the roadbed are spaced apart Or set a horizontal separation anti-seepage curtain perpendicular to the length direction of the building or the direction of the road...

AI Technical Summary

Problems solved by technology

Although this method has the advantages of short construction period and low cost, it has the following problems: since the horizontal anti-seepage layer can only prevent pore fluids such as pore water or pore gas in the foundation treatment part of the soil from penetrating vertically upwards and overflowing the foundation, vertical The anti-seepage curtain and the lateral separation anti-seepage curtain can only prevent the pore fluid in the soil of the foundation treatment part from penetrating laterally and horizontally, so that the pore fluid is forced to bypass the anti-seepage curtain downward and infiltrate outward

Although this can lengthen the seepage path of the pore fluid, slow down the consolidation process of the soil, and prolong the time for the post-construction settlement of the foundation, the underlying layer below the foundation treatment depth is a permeable layer and the treatment depth of the vertical anti-seepage curtain is not In the case of very deep ground, the post-construction settlement of some foundations will eventually occur, which will make the post-maintenance workload of the project larger

Images