用荷载传递法计算深长大直径嵌岩桩单桩沉降  

A FORMULA FOR CALCULATING THE SETTLEMENT OF LONG ROCK-SOCKETED SINGLE PILE

作　　者：邱钰[1] 胡雪辉 刘松玉[1] 

机构地区：[1]东南大学 [2]湘潭市住宅设计研究所

出　　处：《土木工程学报》2001年第5期72-75,共4页China Civil Engineering Journal

摘　　要：考虑到嵌岩桩所处土层、岩层特点 ,采用双折线荷载传递函数 ,用荷载传递法导出深长大直径嵌岩桩单桩沉降计算的解析公式。利用导出的单桩沉降解析公式 ,根据所收集的 35根南京地区深长大直径嵌岩桩试桩资料 ,采用非线性优化方法 ,进行了荷载传递函数参数的识别分析 ,得到了南京地区大直径嵌岩桩沉降计算荷载传递函数参数值 ,所导出的参数值可用于单桩沉降计算。A formula to calculate the settlement of a rock?socketed single pile is proposed in the paper. The bilinear load?transfer function is used to derive the formula. It considers the difference between the soil?layer and rock?layer. A set of calculating data by the proposed formula is obtained. It is the summary of test data of many long and large?diameter rock?socketed piles in Nanjing. Then, the parameter identification is carried out for the load?transfer function by the non?linear optimization approach. It is suited for the Nanjing zone. The calculated settlements of the piles are well fit with the test data.

关 键 词：嵌岩桩 单桩沉降 解析解 荷载传递函数 

分 类 号：TU473.12[建筑科学—结构工程]