Combined Pile-network Structure in Soft Soil Foundation

Abstract

The invention discloses a soft soil foundation combined pile net structure, aims at effectively improving reinforcing effect and saving project investment and comprises cast-in-place piles, pressed piles, pile caps, guide fixing frame lattices and a cushion body. The cast-in-place piles are arranged around the boundary of a filling body at intervals, bottoms of the cast-in-place piles enter a bedrock layer below a soft soil layer by certain depth, the pressed piles are arranged in the soft soil layer within a range of the cast-in-place piles at intervals, bottoms of the pressed piles are pressed in the top surface of the bedrock layer, the pile caps are arranged at the tops of the cast-in-placed piles and the pressed piles and fixedly connected with the cast-in-placed piles and the pressed piles, the guide fixing frame lattices are positioned in the soft soil layer and transversely restrain the cast-in-place piles and the pressed piles, and the cushion body is laid between the tops of the piles caps and the undersurface of the filling body.

Description

technical field [0001] The invention relates to civil engineering, in particular to foundation reinforcement engineering of soft soil on bedrock body. Background technique [0002] In engineering construction, there are a large number of foundation projects with soft soil overlying the bedrock. To build a filling project on the soft soil foundation above the bedrock, it is necessary to carry out composite foundation reinforcement treatment for the foundation. Usually, the soft soil Cement-soil mixing piles and high-pressure jet grouting piles can be used for reinforcement. However, when the soft soil is thick or the filling height of the upper filling project is relatively large, the bearing capacity of the foundation after cement-soil mixing piles or high-pressure jet grouting piles is reduced. Settlement control often cannot meet engineering requirements. In addition, when the soft soil contains a large amount of organic matter, the pile quality of cement-soil mixing piles...

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Problems solved by technology

[0002] In engineering construction, there are a large number of foundation projects with soft soil overlying the bedrock. To build a filling project on the soft soil foundation above the bedrock, it is necessary to carry out composite foundation reinforcement treatment for the foundation. Usually, the soft soil Cement-soil mixing piles and high-pressure jet grouting piles can be used for reinforcement. However, when the soft soil is thick or the filling height of the upper filling project is relatively large, the bearing capacity of the foundation after cement-soil mixing piles or high-pressure jet grouting piles is reduced. Settlement control often cannot meet engineering requirements. In addition, when the soft soil contains a large amount of organic matter, the pile quality of cement-soil mixing piles or high-pressure jet grouting piles is very poor; When the bedrock is used, it is not stable by itself, and it is easy to form inclined deformation. Therefore, currently, bored piles are usually used to reinforce the foundation, but the investment of all bored piles is very huge. Therefore, in this case, a reinforcement effect is required. Good, economical and convenient soft soil foundation reinforcement measures, and meet environmental protection requirements

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