Elastoplastic solutions for single piles under combined vertical and lateral loads  

作　　者：ZHANG Lei GONG Xiao-nan YANG Zhong-xuan YU Jian-lin 

机构地区：[1]Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University, Hangzhou 310058, China [2]Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China

出　　处：《Journal of Central South University》2011年第1期216-222,共7页中南大学学报（英文版）

基　　金：Foundation item： Projects（50708093, 50808159） supported by the National Natural Science Foundation of China

摘　　要：In order to improve the reliability of the design and calculation of single piles under the combined vertical and lateral loads, the solutions were presented based on the subgrade reaction method, in which the ultimate soil resistance was considered and the coefficient of subgrade reaction was assumed to be a constant. The corresponding computational program was developed using FORTRAN language. A comparison between the obtained solutions and the model test results was made to show the validity of the obtained solutions. The calculation results indicate that both the maximum lateral displacement and bending moment increase with the increase of the vertical and lateral loads and the pile length above ground, while decrease as the pile stiffness, the coefficient of subgrade reaction and the yielding displacement of soil increase. It is also shown that the pile head condition controls the pile responses and the vertical load may cause the instability problem to the pile. In general, the proposed method can be employed to calculate the pile responses independent of the magnitude of the pile deflection.为了改进单身者的设计和计算的可靠性，堆在下面联合了垂直、侧面的负担，答案基于路基反应方法，最终的土壤抵抗在被考虑被介绍，路基反应的系数被假定是一个常数。相应计算节目用 FORTRAN 语言被开发。在获得的答案和模型测试结果之间的比较被做显示出获得的答案的有效性。，计算结果显示有垂直、侧面的负担和上面的堆积长度的增加的最大的侧面的排水量和弯曲时刻增加磨擦了作为堆积僵硬，路基反应的系数和土壤增加的让步的排水量减少。堆积头条件控制堆积回答，这也被显示出，垂直负担可以引起不稳定性问题到堆积。一般来说，建议方法能被采用计算堆积偏转的大小的堆积回答独立人士。

关 键 词：pile-soil interaction combined vertical and lateral loads ultimate resistance subgrade reaction method bendingmoment 

分 类 号：TU473.1[建筑科学—结构工程] TU473.11[建筑科学—土工工程]