| 断面形状对隧洞围岩位移和应力的影响分析 |
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| 引用本文： | 李浩,朱向阳,徐永福,张志泉,陈寅奕.断面形状对隧洞围岩位移和应力的影响分析[J].隧道建设,2009,29(1):38-44. |
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| 作者姓名： | 李浩 朱向阳 徐永福 张志泉 陈寅奕 |
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| 作者单位： | 1. 江苏省交通规划设计院有限公司2. 连云港市港口管理局3. 上海交通大学船舶海洋与建筑工程学院 |
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| 摘 要： | 采用FLAC3D软件分析了圆形断面、矩形断面、直墙式断面和曲墙式断面形状隧道开挖在III级围岩中的位移和应力集中分布规律。圆形断面隧洞围岩位移最小，应力集中系数最小，塑性区厚度最小，应力集中系数最大点距洞面的距离最大，即支护结构受到的围岩压力最小;与圆形断面隧洞相比，曲墙式隧洞围岩位移、应力集中程度和塑性区仅次于圆形隧洞，曲墙式断面是合理的隧洞断面形式；矩形隧洞围岩位移、应力集中程度和塑性区最大；直墙式隧洞围岩位移、应力集中程度和塑性区仅比矩形隧道略小，与矩形一样，直墙式断面是不利的隧洞断面形式。
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| 关 键 词： | 隧洞断面形状位移塑性区应力集中FLAC3D |
| 收稿时间： | 2008-09-17 |
| 修稿时间： | 2009-01-04 |
Influence of Tunnel Cross-section Shape on Stress and Displacement of Surrounding Rock |
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| LI Hao,ZHU Xiangyang,XU Yongfu,ZHANG Zhiquan,CHEN Yinyi.Influence of Tunnel Cross-section Shape on Stress and Displacement of Surrounding Rock[J].Tunnel Construction,2009,29(1):38-44. |
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| Authors: | LI Hao ZHU Xiangyang XU Yongfu ZHANG Zhiquan CHEN Yinyi |
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| Institution: | 1. Jiangsu Planning and Design Institute of Communications2. Lian yun gang Administrating Bureau of Harbor, Lian yun gang 2220003. School of Naval
Architecture, Ocean and Civil Engineering of Shanghai Jiao Tong University. |
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| Abstract: | The distribution rules of stress and displacement of grade III surrounding rock during excavation of tunnels with circular cross-section,rectangular cross-section,straight wall and arch cross-section and curved wall cross-section are analyzed by FLAC(3D) software respectively.The tunnel with circular cross-section has the smallest displacement,stress concentration coefficient and plastic zone,while the tunnel with rectangular cross-section has the largest displacement,stress concentration coefficient and pl... |
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| Keywords: | FLAC3D |
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