Strengthening treatment structure of soft soil foundation and strengthening method of foundation pit of soft soil foundation

Abstract

The invention discloses intensified strengthening treatment structure of soft soil foundation, which is characterized in that: the structure comprises a plurality of #-shaped roads, the #-shaped roadsare separated into a plurality of foundation pit areas, a permeable pile is driven in the foundation pit near the road, a reinforcing cage is inserted in the permeable pile, and the permeable porousconcrete is filled. The reinforced treatment structure of soft soil foundation improves the shear resistance of pipe piles, simplifies the excavation and reinforcement of foundation pit, and saves theconstruction period and material cost. A method for reinforcing a foundation pit of soft soil by adopting that above-mentioned soft soil foundation reinforcement treatment structure is provided. Thetechnical effect of the invention is as follows: Direct foundation treatment, reinforcement and foundation pit excavation are effectively combined together, the permeable pile and the solidified porous concrete are left in the soil together, It can be used as retaining pile to retain soil and stop water, effectively avoid the difficulty of driving bored pile, simplify the excavation and reinforcement construction process, and save the construction period and material cost.

Description

technical field [0001] The invention relates to a weak soil foundation strengthening treatment structure and a method for strengthening the foundation pit of the weak soil foundation. Background technique [0002] With the rapid development of economic construction in the southeast coast of our country, the population is also increasing, and the demand for land is increasing day by day. The coasts of Tianjin, Jiangsu, Guangdong, and Zhejiang have all reclamated land from the sea on a large scale, and these areas are mostly silty soft soils. It has the characteristics of high water content, poor permeability, low strength, large pores, low density and certain structure, and its distribution is often uneven. Taking Wenzhou coastal industrial belt as an example, its soil has low strength, high sensitivity, high moisture content, high compressibility, and is in a flowing state, which is a typical weak soil foundation. Due to the low initial strength, it is difficult for large-...

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Problems solved by technology

However, vacuum preloading combined with electroosmosis cannot be applied in a large area due to its high energy consumption, while vacuum preloading combined with chemical reagents will cause certain pollution, and the cost of vacuum combined surcharge is relatively high, so it is widely used in actual projects The more economical vacuum preloading method

[0003] However, due to the clogging of the drainage board during vacuum preloading, the reinforcement effect is often unsatisfactory

In addition, these foundation treatment methods all use plastic drainage boards to transmit vacuum loads and serve as drainage channels. After treatment, they are left in the soil body, making it difficult to use bored piles, which may easily cause pile holes to deflect, and the shear resistance of prefabricated pipe piles Poor capacity, difficult to be used as slope maintenance piles, and foundation pit excavation is extremely difficult

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