爆破地震波作用下隧道衬砌结构动力响应研究
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摘要
以地表爆破为振动源,通过控制不同的炸药量和爆心距来模拟不同强度的地震波,并利用工程地震仪实测振动源附近的隧道衬砌结构的动力响应,通过滤波和分离处理得到代表性的速度时程曲线;通过建立数值模型并加载监测到的速度时程曲线,以此来模拟爆破地震波对隧道衬砌不同断面不同部位的动力作用,并来探讨爆破地震对邻近隧道的影响范围和作用方式。
Taking the surface blasting as vibration source,controlling the explosive charge and explosion center distance to imitate the seismic waves with different strength and measuring the dynamic response of tunnel lining structure near vibration source by engineering seismograph,the typical speed-time curve is achieved through filtering and separation treatment;establishing the numerical model and loading the monitored speed-time curve to imitate the dynamic action of seismic wave at explosion site to different parts at different sections of tunnel lining and to discuss the influence area and action way of explosion earthquake to tunnel nearby.
Taking the surface blasting as vibration source,controlling the explosive charge and explosion center distance to imitate the seismic waves with different strength and measuring the dynamic response of tunnel lining structure near vibration source by engineering seismograph,the typical speed-time curve is achieved through filtering and separation treatment;establishing the numerical model and loading the monitored speed-time curve to imitate the dynamic action of seismic wave at explosion site to different parts at different sections of tunnel lining and to discuss the influence area and action way of explosion earthquake to tunnel nearby.
引文
[1]吕淑然.露天台阶爆破地震效应[M].首都经济贸易大学出版社,2006.12.
[2]魏海霞,陈士海,王海亮.爆破地震波作用下建筑结构速度响应的现场测试研究[J].矿业安全与环保,2010.4,37(2):44-46.
[3]钱胜国,陈玲玲,吴新霞,张文煊.爆破地震工程结构动力分析[M].中国水利水电出版社,2006.9.
[4]徐华.高烈度区山岭隧道地震动力响应及抗震稳定性研究[D].成都理工大学,2009.
[5]GB/T17742-1999,中国地震烈度表[S].
[2]魏海霞,陈士海,王海亮.爆破地震波作用下建筑结构速度响应的现场测试研究[J].矿业安全与环保,2010.4,37(2):44-46.
[3]钱胜国,陈玲玲,吴新霞,张文煊.爆破地震工程结构动力分析[M].中国水利水电出版社,2006.9.
[4]徐华.高烈度区山岭隧道地震动力响应及抗震稳定性研究[D].成都理工大学,2009.
[5]GB/T17742-1999,中国地震烈度表[S].
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