Study on Bearing Capacity of Stiff Composite Pile in Peat Soil in Yunnan Province
Peat soil is a special soft soil foundation in Yunnan,which makes selecting pile foundation of top priority.As a new type of composite pile,rigid composite pile is formed by inserting corresponding core pile into cement soil pile,which greatly improves the overall bearing capacity and has good effect on soft soil foundation treatment.In this paper,through the indoor model test,the load-settlement curve,axial force and side friction of rigid composite pile with different core pile lengths and section sizes are studied,and the bearing characteristics of rigid composite pile are obtained.The test results show that the load settlement curve of the rigid composite pile is'slow drop'type,which shows the bearing characteristics of large diameter piles.The core pile bears the main load,and the axial force and friction force change abruptly at the bottom section of the core pile.
strength composite pilepeaty soilindoor model test
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