基于ANSYS的完整桩机械阻抗分析  

An ANSYS-based analysis of the mechanical impedance of complete pile

作　　者：钟文森[1] 袁春辉[2] 赖德芳 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070 [2]广东省建筑设计研究院,广东广州510010 [3]江西省赣州公路勘察设计院,江西赣州341000

出　　处：《佛山科学技术学院学报（自然科学版）》2013年第1期78-83,共6页Journal of Foshan University(Natural Science Edition)

摘　　要：从一维波动方程出发,利用机械阻抗理论对方程展开讨论,得出不同桩底约束条件下桩的共振频率方程。利用有限元软件AN SY S对桩进行模态分析得到固有频率,在此基础上利用AN SY S的谐响应分析功能做进一步分析,通过数据后处理得到桩的机械阻抗频率特性及幅频特性,并与理论数据进行比较,证明两者是相符的。In light of one-dimension wave equation and the applied theory of mechanical impedance, equations are studied and the resonance frequency equation under different conditions of pile bottom constraint are worked out. The free running frequency is obtained through the modal analysis of piles by using ANSYS software, which is taken as the base of the further analysis of the frequencies. It is found that the mechanical impedance and the frequency-amplitude characteristics resulted from processing the corresponding pile data are proved to be consistent with those theoretical ones.

关 键 词：波动方程 机械阻抗 有限元 幅频特性 共振频率 

分 类 号：TU473[建筑科学—结构工程]