Analysis of the influence of soft foundation treatment measures on the engineering characteristics of adjacent pile foundations and treatment effect under surcharge

Abstract

To deal with the impact of soft foundation on the characteristics of pile foundation lateral deformation under surcharge, this paper analyzes the treatment effect of different treatment measures and different treatment zone distances on soft foundation under surcharge based on on-site monitoring and numerical simulation analysis. Studies show that the weak interlayer has the highest impact on the piles closest to the outer side of the pile, and the pile foundation exhibits the largest deformation. The design should improve the bearing capacity of the side piles; the pile body displacement and the rigid long and short piles should be treated with cement mixing piles and rigid long and short piles. The law of soil resistance that changes on the side of the pile is basically same. The treatment effect of rigid long and short piles is better than that of cement mixing piles; there are certain differences in the treatment effect when the distance of the treatment area is different. The treatment area should neither be very far from the pile foundation nor close. The treatment effect is found to be best when the treatment area is 8 m away.