断层错动时过断层巷道应力分析
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摘要
采用有限单元法,研究了巷道遭遇正、逆、走滑断层错动的反应情况。结果表明,断层的不同类型及不同宽度都会对巷道受力产生影响。巷道在遭遇正断层错动时,很有可能发生大区域破坏;走滑断层错动时主要使巷道断层处形成较大应力集中,两盘内受力较小;逆断层错动时对巷道的影响程度介于前两者之间。
With finite element method,the roadway under normal,reverse,and strike-slip fault movements was studied.The results showed that the fault type and width influenced the roadway stress.When the roadway under normal fault movement,larger area damage were likely to happen.Under strike-slip movement,there were more stress concentration around the fault and less stress among two sides.The reverse fault movement influence on the roadway was between the former two situations.
With finite element method,the roadway under normal,reverse,and strike-slip fault movements was studied.The results showed that the fault type and width influenced the roadway stress.When the roadway under normal fault movement,larger area damage were likely to happen.Under strike-slip movement,there were more stress concentration around the fault and less stress among two sides.The reverse fault movement influence on the roadway was between the former two situations.
引文
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[2]刘晶波.地铁地下结构抗震分析及设计中的几个关键问题[J].土木工程学报,2006,39(6):106-110.
[3]孙钧.地下结构有限元解析[M].上海:同济大学出版社,1988.
[4]孙钧,候学渊.地下结构(上、下册)[M].北京:科学出版社,1987.
[5]Kuesel,T.R.Earthquake Design Criteria for Subways[J].J.Struct.Div.,ASCE ST6,1969:1213-1231.
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