Thick and ultra-soft soil embankment and construction method

Abstract

The invention relates to a thick and ultra-soft soil embankment. The thick and ultra-soft soil embankment comprises an embankment body, a cemented soil separating wall, reinforced area solidified cemented soil, transition area solidified cemented soil, a drainage blanket, cross-shaped prefabricated joints, separating geotechnical cloth, a reinforced concrete grid plate, linear prefabricated joints, ribbed slab piles and quick grouting equipment. The ribbed slab piles penetrate the reinforced area solidified cemented soil to arrive at an ultra-soft soil layer, vertical connection ribs B are bent by the ribbed slab piles on fixed positions to serve as carrying steel of rib bodies on a prefabricated slab pile foundation, and the rib bodies are provided with round holes; and rectangular anchoring steel plates and round anchoring steel plates are arranged and used for integrally anchoring vertical connection ribs A and the vertical connection ribs B. The thick and ultra-soft soil embankment has the beneficial effects that through the reinforced area solidified cemented soil, the transition area solidified cemented soil, rigid piles and the reinforced concrete grid plate, the integral stress of the embankment is improved, differential settlement of a foundation is greatly reduced, and the drainage problem of the post-construction foundation is effectively solved through vertical drainage bodies and the drainage blanket.

Description

technical field [0001] The invention relates to the technical field of expressway engineering and foundation treatment, in particular to a deep ultra-soft soil embankment and a construction method. Background technique [0002] In the past 40 years, the settlement and stability of deep and ultra-soft soil foundation embankments have attracted much attention. Due to the complexity of the problem, how to formulate a reasonable foundation treatment plan during the construction process is a thorny problem that plagues the smooth implementation of the project. Most of the coastal embankments are deep and soft soil foundations, which are weak and have almost no hard crust. The microstructure and genetic mechanism of the soil are complex and changeable, and the physical model and its parameters are heterogeneous, anisotropic and uncertain. Highway is a kind of linear belt engineering, and coastal road often passes through different landform units. Facing the complex engineering e...

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Problems solved by technology

However, this technology still has the problems of large lateral displacement of the embankment and significant uneven settlement, and does not consider the problems of post-construction drainage and piled soil load around the embankment

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