A kind of soft foundation treatment assembled grid grid replacement structure and construction method

Abstract

The invention relates to a soft ground treatment assembled bin grid replacement structure and a construction method. After the soft foundation section is cleared and the site is leveled, the bin grid structure is laid. The bin grid structure adopts front and rear and left and right directions. The steel bars extending from one side of the top and bottom members are inserted into the top and bottom members of the other top and bottom members for connection between the top and bottom of the binge grid. A side stud is connected, and a rectangular parallelepiped mold is arranged inside the unit area of ​​the binge grid structure, and the mold is used for backfilling replacement materials. After the backfilling is completed, the mold is taken out, and the top member of the binge grid structure is covered. A bin grid structure is formed, and the upper part of the bin grid structure is a cushion layer, an embankment, and a pavement structure layer. The soft foundation treatment structure involved in the present invention forms an artificial replacement layer with high tensile strength and good integrity on the surface of soft soil, which can not only effectively reduce the settlement of the roadbed and improve the stability of the roadbed, but also save construction costs and speed up construction Progress and environmental protection, with good economic and technical benefits.

Description

technical field [0001] The invention relates to a replacement structure and construction method for soft foundation treatment, in particular to an assembled bin grid replacement structure and construction method for soft foundation treatment, which can not only expand the application range of soft foundation replacement treatment, but also greatly Improve the integrity and tensile strength of the replacement material, especially suitable for projects with a soft soil thickness of 3 to 6 meters. Background technique [0002] Soft soil subgrades are unavoidable in highway construction, and if not handled properly, it will bring great harm to traffic engineering, mainly including subgrade instability and excessive settlement. The current code stipulates that the shallow soft foundation with a soft soil thickness less than 3 meters shall be replaced and filled, and the soft foundation with a thickness greater than 3 meters shall be treated with deep treatment methods, such as de...

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Problems solved by technology

However, due to the constraints of environmental protection and economic factors on the one hand, the replacement and filling method, on the other hand, non-viscous discrete replacement materials such as sand, gravel, pebbles, crushed stones, and flakes, slide to both sides of the subgrade under the action of filling load. The embankment often has shear uplift at a certain distance on the side of the embankment, which restricts the application of the replacement method in the engineering field. The deep soft soil treatment method is often used, resulting in project waste.

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