Study on critical failure vibration velocity of arch with vertical wall lining subjected to blasting vibration

YI Chang-ping; LU Wen-bo; ZHANG Jian-hua; ZHANG Ai-ping

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Study on critical failure vibration velocity of arch with vertical wall lining subjected to blasting vibration

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- Study on critical failure vibration velocity of arch with vertical wall lining subjected to blasting vibration
- Vol. 29, Issue 8, (2008)
- 作者机构：
  
  1. 武汉理工大学资源与环境工程学院,武汉,430070
  2. 武汉大学水利水电学院,武汉,430072
  3. 湖北水利水电总公司,武汉,430061
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU434
- Online First：02 August 2013，
  
  Published：2008
- 稿件说明：
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YI Chang-ping, LU Wen-bo, ZHANG Jian-hua, et al. Study on critical failure vibration velocity of arch with vertical wall lining subjected to blasting vibration[J]. 2008, 29(8).
DOI：

YI Chang-ping, LU Wen-bo, ZHANG Jian-hua, et al. Study on critical failure vibration velocity of arch with vertical wall lining subjected to blasting vibration[J]. 2008, 29(8). DOI：

摘要

根据应力波理论，采用复变函数方法，对爆破振动作用下城门洞形衬砌的应力和振速分布进行了研究，进而求解了入射波入射角度不同时衬砌的临界振速。首先将城门洞形衬砌映射为一个内径为1，外径大于1的圆环，再求解稳态P波作用下圆环的动态响应；计算结果表明：入射波的入射方向对于城门洞形衬砌的临界振速有较大的影响，入射角度为90?时，衬砌的临界振速最大，入射角为0?时次之，入射角为270?时最小。

Abstract

The function of complex variable and stress wave theory are employed to study the stress and vibration velocity distribution of arch with vertical wall lining(AVWL) induced by blasting vibration; then the critical failure vibration velocity of AVWL is gotten when the incidence angles of incident wave are different. Firstly

the AVWL is mapped into a circularity whose outside radius is bigger than 1 but inside radius is equal to 1

and then the dynamical response of the circularity is solved under the acting of harmony P wave. The result shows that the incidence angle of incident wave has large influence on failure vibration velocity of AVWL

when the incidence angle is 90?

270?

the critical failure vibration velocity of lining is decrease by degrees.

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