摘要
考虑桩周土层的软化硬化特性,采用修正的指数曲线模型作为荷载传递函数,应用MATLAB语言编制矩阵位移法分析桩身荷载传递特性的程序,假定不同的桩、土参数和加载工况,模拟分析了上海地区软土软化对钢管桩荷载传递机理的影响,其结果显示当桩长超过一定限度后再增加桩长,桩的承载力增加不明显,对应的桩顶刚度还会有一定下降。
The matrix displacement method programmed by MATLAB language is used to analyze the load transfer of piles, where an exponential curve model is modified for load transfer function with softening or hardening of soil. Supposing different parameters of piles and soil as well as loading condition, simulation analysis is taken on the influence of soft clay softening on load transfer mechanism of steel pipe piles in Shanghai region. It is indicated that not only the bearing capacity of pile does not increase obviously along with pile length but the stiffness of pile top decreases to some extent when pile length exceeds a certain value.
出处
《地下空间与工程学报》
CSCD
2007年第5期933-936,977,共5页
Chinese Journal of Underground Space and Engineering
关键词
钢管桩
软土
软化
荷载传递
steel pipe piles
soft clay
softening
load transfer
