Study on the Influence of Pile Side Caves on Pile Foundation Bearing Capacity
The difference of karst cave development and situation leads to the possibility of karst cave appearing at pile side or pile bottom,and the bearing capacity of pile foundation is different at different positions.This paper conducts a numerical analysis on the influence of caves on the pile side in karst areas on the bearing capacity of pile foundations.According to the size of pile foundation of a real bridge project,the karst cave is modeled,and the influence of the length and height of the karst cave on the horizontal and vertical bearing capacity of pile foundation is studied.The results show that when the horizontal displacement of the top of the pile foundation is greater than 0.05m,the horizontal load is positively correlated with the length of the cave,but the height of the cave has little effect on the bearing capacity.The research results are of great significance to the design and construction of pile foundation in karst area.
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