Numerical analysis of low strain dynamic response of anchorage bolt system

CHEN Jian-gong; ZHANG Yong-xing

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Numerical analysis of low strain dynamic response of anchorage bolt system

更新时间：2026-06-25

- Numerical analysis of low strain dynamic response of anchorage bolt system
- Vol. 28, Issue S1, (2007)
- 作者机构：
  
  重庆大学土木工程学院,重庆,400045
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU413.5
- Online First：28 March 2014，
  
  Published：2007
- 稿件说明：
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CHEN Jian-gong, ZHANG Yong-xing. Numerical analysis of low strain dynamic response of anchorage bolt system[J]. 2007, 28(S1).
DOI：

CHEN Jian-gong, ZHANG Yong-xing. Numerical analysis of low strain dynamic response of anchorage bolt system[J]. 2007, 28(S1). DOI：

摘要

建立了锚杆-围岩结构系统三维轴对称有限元计算模型，并利用动力有限元法对锚杆系统瞬态动力响应进行了分析。对于完整锚杆系统，围岩质量较好、较为坚硬时，杆顶速度响应信号的衰减速度较快，锚杆杆底反射信号较不明显；围岩质量较差、较为软弱时，信号衰减速度较慢，杆底反射信号较清晰；在损伤锚杆系统中，当锚杆系统筋材存在损伤时，损伤处反射波较明显，而当锚固砂浆存在局部损伤时，损伤处的反射波不明显，但杆底反射波比较明显。

Abstract

The numerical experiment is mode by using finite element analysis. The dynamic responses are simulated for undamaged anchorage system and damaged anchorage systems by axis symmetry numerical calculate. For undamaged anchorage system

the signal of bar’s top speed fade down quickly as the surrounding-rock is hard and the bar’s bottom reflected signal is not clear. Meanwhile the signal of bar’s top speed fade down slowly as the surrounding-rock is weak and the bar’s bottom reflected signal is clear. For damaged anchorage system

the reflected signal of impairment is distinct as steel have impairment. When anchorage mortar has defect

the reflected signal of defect is indistinct but he bar’s bottom reflected signal is distinct.

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