Soft soil foundation high fill embankment for effectively controlling post-construction settlement and construction method

Abstract

The invention relates to a soft soil foundation high fill embankment for effectively controlling post-construction settlement and a construction method. The soft soil foundation high fill embankment comprises a bearing layer, a soft soil foundation, a high fill light solidified silt embankment and an embankment settlement control structure embedded in the soft soil foundation. The upper surface and the two sides of the high fill light solidified silt embankment are paved with a pavement waterproof layer and slope protection waterproof layers correspondingly. The slope toe of each slope protection waterproof layer is provided with a concrete sealing ditch. The embankment settlement control structure comprises a rigid pile group, pile caps, a semi-rigid reinforced solidification cushion layer, a powdery fine sand inverse filtering layer and a waterproof geotextile. Rigid piles in the rigid pile group punch the soft soil foundation and are embedded in the bearing layer. The pile caps are arranged at the tops of the rigid piles. The waterproof geotextile, the powdery fine sand inverse filtering layer and the semi-rigid reinforced solidification cushion layer are sequentially paved at the tops of the pile caps from top to bottom. The high fill light solidified silt embankment is arranged on the upper surface of the waterproof geotextile. The waterproof geotextile is sealed at the bottoms of the concrete sealing ditches. According to the soft soil foundation high fill embankment for effectively controlling post-construction settlement and the construction method, the structure is reasonable, construction is convenient, and embankment settlement can be reduced.

Description

technical field [0001] The invention belongs to the technical field of foundation treatment, and relates to a high-fill embankment of soft soil foundation and a construction method for effectively controlling post-construction settlement. Background technique [0002] my country's rapidly developing economy has an increasing demand for transportation resources, and highways and railways have been vigorously developed as the most convenient transportation resources. However, the construction of infrastructure such as highways and railways inevitably needs to cross some bad foundations that are not suitable for building embankments (for example, silty soft clay, expansive soil, flushing soil, organic matter soil and peat soil, etc.), Therefore, it often faces diseases such as insufficient foundation bearing capacity, local instability of embankment, settlement and excessive uneven settlement. In the face of the above-mentioned diseases, the engineering field has tried a varie...

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Problems solved by technology

[0004] Aiming at the deficiencies existing in the existing foundation treatment technology, the purpose of the present invention is to provide an embankment and construction method with reasonable structure, convenient construction and effective reduction of post-construction settlement of the embankment, and to a certain extent can solve the problem of traffic engineering construction. The huge amount of building material resources required, as well as the environmental pollution and occupation of land resources caused by dredging silt

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