隧道全长粘结式锚杆有限元模拟分析研究  

Study on Finite Element Simulation of Tunnel Fully Grouted Bolt

作　　者：伍真川[1] 曹文贵[2] 彭波[2] 

机构地区：[1]湖南省高速公路管理局,湖南长沙410011 [2]湖南大学岩土工程研究所,湖南长沙410082

出　　处：《公路工程》2010年第4期75-79,共5页Highway Engineering

摘　　要：锚杆尤其是全长粘结式砂浆锚杆是隧道工程广泛应用的支护型式,但由于目前对全长粘结式砂浆锚杆支护作用力学机理认识不足,使其设计方法存在一定的局限性。针对某隧道工程,基于新型复合砂浆锚杆有限单元模型,采用非线性有限元分析了全长粘结式砂浆锚杆设计参数对支护效果的影响,并对隧道变形与塑性区分布规律进行探讨,从而为隧道支护设计提供了参考依据,完善了隧道全长粘结式砂浆锚杆支护的理论与方法。Bolt has been in wide use as a kind of support in tunneling,especially fully grouted bolt.But the design method for fully grouted bolt is limited due to the shortage of it＇s support effect mechanism at present.Amied at one tunnel,the effection of the fully grounted bolt design parameters to supporting effect is analyzed by the elastic-plastic finite element program.The program is based on the new composite grouted bolt element.The deformation and distribution of plastic range are also discussed.The rules can provide the reference to the tunnel support design.And the thery and technique of fully grouted bolt used in tunneling will be perfected further.

关 键 词：隧道工程 全长粘结式砂浆锚杆 有限元 支护 

分 类 号：U455.71[建筑科学—桥梁与隧道工程]