Reinforcement method of deep layer soft soil foundation

Abstract

This invention discloses a deep soft soil reinforce method. Its construction steps includes:(1)the vacuum well point declines water (2) vacuum electricity declines a water : vertically plugs electricity tube in a vacuum tube wells inside, installs electric system for vacuum tube wells and electron system the cathode connecting, electron and electron pipe system connecting to form the anode DC circuit; (3) low-energy strong ramming; (4) vibrating roll, flat ground; (5) adding concrete-pile : machine drills hole, adapting tube pump concrete for the construction technology-concrete composite construction of the foundations; (6) lays cushion : concrete pile in the top layer structure and the site uses static compaction cushion construction. This invention by vacuum precipitation and-concrete pile combination of approaches to achieve the reinforcement of the deep soft ground, breakthroughs in the tradition of deep soft soil to use reinforced concrete piles in the traditional concept and reduces the construction cost.

Description

technical field [0001] The invention relates to a method for reinforcing a civil engineering foundation, in particular to a method for reinforcing a deep soft soil foundation with high water content. Background technique [0002] In construction engineering, the methods for treating and reinforcing poor foundation soil generally include replacement method, preloading method, compaction and tamping method, compaction method, reinforcement method and grouting method, etc. One or a combination of several types to complete the treatment of foundation soil. [0003] Weak clay layers of marine, lacustrine and river deposits widely exist in our country. This kind of soil is characterized by high water content, high compressibility, low strength and poor water permeability. It will produce considerable settlement under the load of buildings. For this kind of foundation, especially for large-scale construction, such as building docks, airports, etc. on this...

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Problems solved by technology

[0005] However, the limit precipitation depth of the well point precipitation method in this kind of reinforcement method is not more than 8 meters, which makes the deep soft soil in the foundation unable to obtain effective precipitation preloading, and still maintains a high water content state; in addition, low energy The impact depth of the impact energy transmission of dynamic compaction is only limited to the shallow layer, which makes this method unable to reinforce the deep soft soil

However, in actual engineering, it is often encountered that the soft soil of the foundation is deep. At this time, if the above method is adopted, the result will be that the bearing capacity of the deep soft soil is insufficient, thereby forming deformation of the deep soft soil, which will cause large settlement after construction, and the stability of the foundation will be reduced. Poor and other issues

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