2005年6月19～24日，第11届国际岩土力学计算方法与进展协会国际会议（11th Conference of International Association for Computer Methods and Advances in Geomeclaanics—IACMAG）在意大利历史名城都灵（Turin）隆重召开，香港理...2005年6月19～24日，第11届国际岩土力学计算方法与进展协会国际会议（11th Conference of International Association for Computer Methods and Advances in Geomeclaanics—IACMAG）在意大利历史名城都灵（Turin）隆重召开，香港理工大学土木与结构工程系殷建华教授荣获“国际岩土力学计算方法与进展协会”（IACMAG）2005年度地区杰出贡献奖。展开更多
The paper first analyzes the failure mechanism and mode of tunnel according to model experiments and mechanical calculation and then discusses the deficiency of taking the limit value of displacement around the tunnel...The paper first analyzes the failure mechanism and mode of tunnel according to model experiments and mechanical calculation and then discusses the deficiency of taking the limit value of displacement around the tunnel and the size of the plastic zone of surrounding rock as the criterion of stability. So the writers put forward the idea that the safety factor of surrounding rock calculated through strength reduction FEM(finit element method) should be regarded as the criterion of stability,which has strict mechanical basis and unified standard and would not be influenced by other factors. The paper also studies the safety factors of tunnel surrounding rock (safety factors of shear and tension failure) and lining and some methods of designing and calculating tunnels. At last,the writers take the loess tunnel for instance and show the design and calculation results of two-lane railway tunnel.展开更多
文摘2005年6月19～24日，第11届国际岩土力学计算方法与进展协会国际会议（11th Conference of International Association for Computer Methods and Advances in Geomeclaanics—IACMAG）在意大利历史名城都灵（Turin）隆重召开，香港理工大学土木与结构工程系殷建华教授荣获“国际岩土力学计算方法与进展协会”（IACMAG）2005年度地区杰出贡献奖。
基金This research was funded by the National Project"973"(GrantNo. 2010CB732100)NSF of Chongqing (Grant No. CSTC2009BC0002)
文摘The paper first analyzes the failure mechanism and mode of tunnel according to model experiments and mechanical calculation and then discusses the deficiency of taking the limit value of displacement around the tunnel and the size of the plastic zone of surrounding rock as the criterion of stability. So the writers put forward the idea that the safety factor of surrounding rock calculated through strength reduction FEM(finit element method) should be regarded as the criterion of stability,which has strict mechanical basis and unified standard and would not be influenced by other factors. The paper also studies the safety factors of tunnel surrounding rock (safety factors of shear and tension failure) and lining and some methods of designing and calculating tunnels. At last,the writers take the loess tunnel for instance and show the design and calculation results of two-lane railway tunnel.
