变截面桩速度导纳的解析解  

ANALYTICAL SOLUTION ON VELOCITY MOBILITY OF A PILE WITH VARIABLE SECTIONS

作　　者：王腾[1,2] 王奎华 谢康和[1] 

机构地区：[1]浙江大学土木工程系 [2]青岛海洋大学工程学院青岛266071

出　　处：《岩石力学与工程学报》2002年第4期573-576,共4页Chinese Journal of Rock Mechanics and Engineering

摘　　要：对均质土中考虑桩端和桩侧土作用的有限长三段变截面桩在任意激励力作用下的定解问题,利用拉氏变换和阻抗函数的传递性,求得桩顶速度导纳和动刚度的解析解,并对缺陷程度、缺陷段长度及缺陷位置对桩的振动特性的影响作了进一步的研究。The vibration problem of pile with variable sections and finite length under exciting force is studied. The influence of the soil under pile toe and surrounding pile is considered. With Laplace transforms,the analytical solutions on the velocity mobility and the dynamic stiffness at the head of the pile are derived. Based on the solutions,the influences of degree and length as well as location of pile defects on the vibration properties are studied.

关 键 词：变截面桩 拉氏变换 阻抗函数 导纳曲线 解析解 

分 类 号：TU473.1[建筑科学—结构工程]