均质土中全埋入混合缺陷桩的瞬态波动响应  

Transient Wave of Mixed-defective Pile Embedded in Homogeneous Soil

作　　者：何洋 余云燕[1,2] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070 [2]兰州交通大学甘肃省轨道交通力学应用工程实验室,甘肃兰州730070

出　　处：《兰州工业学院学报》2017年第6期1-5,共5页Journal of Lanzhou Institute of Technology

摘　　要：基于回传射线矩阵法,在桩顶作用半正弦脉冲激振力下,研究同时存在变模量和变截面的混合缺陷桩在桩顶接收点的速度波,分析缺陷程度和缺陷位置对桩顶接收点处速度反射波的影响.结果表明:缺陷程度增加对桩顶时域速度响应有影响,缺陷位置不同对节点反射波形和幅值有影响.Based on the method of reverberation matrix,the velocity wave at the top of mixed-defective pile with variable modulus and variable section under the excitation of semi-sine force is derived. The effect of defective degree and defective location on velocity reflecting wave at the top pile are analyzed. Results show that the reflecting wave is affected by defective degree of the pile,and the defective location has the influence on the reflecting wave form and wave crest of the velocity in each node.

关 键 词：回传射线矩阵法 混合缺陷桩 速度波 瞬态波动 

分 类 号：TU473[建筑科学—结构工程]