隧道断面地震反应分析
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摘要
选取拟建的某隧道断面,引入地震波加速度时程曲线,采用数值模拟的方法计算分析了地震工况下隧道的稳定情况以及变形规律.在建模的过程中,引入了初始应力场,消除了支护单元在出现前的扰动变形.利用ADINA有限元软件中的时间衰减功能真实地模拟了新奥法施工过程中围岩变形规律,提高了结果分析的精确性.
Taking the proposed project of a tunnel profile for example,the time history curve of earthquake wave's acceleration is introduced;meanwhile,the stability of the tunnel and the deformation law under the seismic condition are analyzed by numerical simulation.In the process of modeling,the disturbance deformation is eliminated before the support unit is established by importing the initial geological stress field.Using the decay time function of ADINA,the deformation law of the surrounding rock in the process of the new Austrian tunneling method;and the accuracy of the analytical results is improved.
Taking the proposed project of a tunnel profile for example,the time history curve of earthquake wave's acceleration is introduced;meanwhile,the stability of the tunnel and the deformation law under the seismic condition are analyzed by numerical simulation.In the process of modeling,the disturbance deformation is eliminated before the support unit is established by importing the initial geological stress field.Using the decay time function of ADINA,the deformation law of the surrounding rock in the process of the new Austrian tunneling method;and the accuracy of the analytical results is improved.
引文
[1]孔戈.盾构隧道地震响应分析及抗减震措施研究[D].上海:同济大学,2006.
[2]张昀保,张向东,赵立峰.隧道地震反应分析[J].河北交通科技,2008,3(1):54-57.
[3]皇民,高波,魏来.高烈度区隧道洞口段地震响应研究[J].地震研究,2008,4(2):180-185.
[4]李彬.地铁地下结构抗震理论分析与应用研究[D].北京:清华大学,2005.
[5]ADINA北京代表处.ADINA中文土木练习手册[R].北京:ADINA北京代表处,2004.
[2]张昀保,张向东,赵立峰.隧道地震反应分析[J].河北交通科技,2008,3(1):54-57.
[3]皇民,高波,魏来.高烈度区隧道洞口段地震响应研究[J].地震研究,2008,4(2):180-185.
[4]李彬.地铁地下结构抗震理论分析与应用研究[D].北京:清华大学,2005.
[5]ADINA北京代表处.ADINA中文土木练习手册[R].北京:ADINA北京代表处,2004.
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