桩土共同作用机理的初步试验研究  

Primary Study on Pile-soil Mass Interaction

作　　者：杨旌[1] 胡岱文[1] 张永涛[2] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]路桥集团国际建设股份有限公司河北工程部,北京100025

出　　处：《地下空间》2004年第3期346-349,共4页Underground Space

摘　　要：水平推力桩的受力状态是一个比较复杂的三维空间问题 .本文结合在重庆大学松林坡进行试桩得到的数据 ,初步估计出桩周土参与桩共同作用的大致范围 ,研究表明 ,在水平推力作用下 ,不仅是桩前土体提供抗力 ,桩两侧一部分土体也由于侧阻力作用参与桩土共同作用。并初步估计出大致范围 :即桩两侧各影响至 30° ,桩前影响至 1倍桩高处 ,为今后的深入研究奠定了基础。The loading state of laterally loaded pile is a 3 D problem. Based on the data of field experiment on Songlinpo Slope in Chongqing University, the approximate sphere of interaction between the pile and the soil around it is estimated. The results show that under the action of lateral force, not only the soil in front of the pile offers resistance, but the soil on both sides of the pile as well, which act with the pile as a whole due to the friction. It is estimated, that the sphere of the pile soil interaction is found within 30° on both sides of the pile and in double height of the pile in front of the pile. This gives a foundation for further study.

关 键 词：桩土共同作用 土体 试桩 桩周土 水平推力 基础 三维空间 试验研究 受力状态 阻力 

分 类 号：TU473[建筑科学—结构工程] U448[建筑科学—土工工程]