钢筋混凝土管桩反射波法的三维有限元分析

›› 2005, Vol. 26 ›› Issue (5): 803-808.

钢筋混凝土管桩反射波法的三维有限元分析

黄大治，陈龙珠

上海交通大学土木系安全与防灾工程研究所，上海 200030

收稿日期:2004-01-12 出版日期:2005-05-10 发布日期:2013-12-17
作者简介:黄大治，男，1978年生，博士，主要从事基桩动测研究工作。
基金资助:
上海市曙光计划资助项目（No.2001sg013）。

3D finite element analysis of reflected waves in concrete pipe pile with defects

HUANG Da-zhi, CHEN Long-zhu

Institute of Engineering Safety & Disaster Prevention, Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China

Received:2004-01-12 Online:2005-05-10 Published:2013-12-17

摘要/Abstract

摘要： 对桩-土系统用三维有限元模型和Wilson- 直接积分法计算钢筋混凝土管桩顶面的瞬态动力响应，并由此分析了管桩顶面不同测点的反射波信号特征及其与桩身缺陷的对应规律。计算结果表明：管桩顶部波传播的三维效应对桩身浅部局部缺陷深度的判断有较大的影响，所得结论对由反射波法检测管桩全截面断裂和局部缺陷以及传感器的合理布置有较大的指导作用。

关键词: 钢筋混凝土管桩, 桩身局部缺陷, 三维有限元法, 反射波, 传感器的布置

Abstract: With the Wilson- numerical direct integration scheme, a 3D finite element model of the pile-soil system is established for impulse responses at the top of a concrete pipe pile. Some representative features of the calculated wave signals together with their correlation to the measurement points at the top of pile are investigated. It is shown that the three-dimensional effect of wave propagation along the pipe pile head has great influences on the local defect identification. The results are instructive for better evaluation of pile shaft defects as well as for the reasonable arrangement of transducers with the reflected wave testing.

Key words: reinforced concrete pipe pile, local shaft defects, 3D FEM, reflected wave, arrangement of transducers

中图分类号:

TU 473

黄大治，陈龙珠. 钢筋混凝土管桩反射波法的三维有限元分析[J]. , 2005, 26(5): 803-808.

HUANG Da-zhi, CHEN Long-zhu. 3D finite element analysis of reflected waves in concrete pipe pile with defects[J]. , 2005, 26(5): 803-808.

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