岩体隧道开挖工程数值分析
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摘要
公路隧道是一个形状扁平的建筑物,正常情况下只有进出两个工作面,施工较慢、工期较长。从目前我国公路隧道发展趋势来看,之后的很长一段时间,仍采用新奥法为主要施工方法,这也符合世界潮流。文章通过Midas/GTS软件,结合某锚喷支护围护方式的公路隧道,分析了岩体隧道台阶法和导坑法两种开挖方式开挖后各自的位移变化、围岩塑性区分布范围和锚杆轴力。
Highway tunnel is a flat structure,under normal circumstances only exit in and out two working face,construction is slower,duration of construction is longer. From the current development trend of highway tunnel in China,after a long period of time,the new Austrian tunneling method is still used as the main construction method,which is also in line with the trend of the world. In this article,through MIDAS-GTS software,combined with highway tunnel of a way of anchor sprayed concrete supporting,analy that after excavation by using rock bench method and heading method two excavation methods,the respective displacement,surrounding rock plastic zone distribution range and the axial force of bolt.
Highway tunnel is a flat structure,under normal circumstances only exit in and out two working face,construction is slower,duration of construction is longer. From the current development trend of highway tunnel in China,after a long period of time,the new Austrian tunneling method is still used as the main construction method,which is also in line with the trend of the world. In this article,through MIDAS-GTS software,combined with highway tunnel of a way of anchor sprayed concrete supporting,analy that after excavation by using rock bench method and heading method two excavation methods,the respective displacement,surrounding rock plastic zone distribution range and the axial force of bolt.
引文
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[6]周太全,华渊,连俊英,等.硬岩隧道锚喷支护施工过程非线性有限元分析[J].合肥工业大学学报,2005:(8).
[2]程良奎,张作,杨志银,等.岩土加固实用技术[M].北京:地震出版社,1994.
[3]孙钧.中国岩土工程锚固技术的应用与发展[C]∥国际岩土锚固与灌浆新进展会议论文集.北京:中国建筑工业出版社,1996.
[4]李新平,宋桂红,刘巍,等.岩体隧道锚固作用分析[J].岩土力学,2005,(S2).
[5]李治.Midas/GTS在岩土工程中应用[M].北京:中国建筑工业出版社,2012:11.
[6]周太全,华渊,连俊英,等.硬岩隧道锚喷支护施工过程非线性有限元分析[J].合肥工业大学学报,2005:(8).
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