In this paper, the spot tests have been done in order to investigate load-bearing performance, and when the pile, the cap, and the soil are working at the same time, the rule of settlement of sparse piles composite foundation with PTC.

• 对此，本文采用原型静载试验的方法，对带帽PTC单桩以及双桩复合地基的承载性状进行研究，分析桩身、桩帽、桩间土共同作用下其沉降变形规律。