| 大断面公路隧道开挖方法数值分析 |
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| 引用本文： | 郑,晖.大断面公路隧道开挖方法数值分析[J].山西建筑,2014(15):168-169. |
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| 作者姓名： | 郑 晖 |
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| 作者单位： | 大连广播电视大学,辽宁大连116021 |
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| 摘 要： | 依托大连某桥隧建设工程,分别采用导洞法、单侧壁导坑法和双侧壁导坑法模拟大断面公路隧道的开挖过程,详细分析了隧道开挖支护后围岩的位移场与应力场的变化,通过对比研究,得出双侧壁导坑法开挖过程位移变化最小,受力均匀,更有利于维持围岩稳定性的结论。
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| 关 键 词： | 大断面 开挖方法 数值模拟 双侧壁导坑法 |
On numeric analysis of excavation methods of large-section road tunnels |
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| ZHENG Hui.On numeric analysis of excavation methods of large-section road tunnels[J].Shanxi Architecture,2014(15):168-169. |
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| Authors: | ZHENG Hui |
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| Affiliation: | ZHENG Hui ( Dalian Radio and Television University, Dalian 116021, China) |
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| Abstract: | Referring to some bridge tunnel construction project in Dalian, the paper adopts the pilot-tunneling method, the side wall heading method, and the twin-side heading method to simulate the excavation process of the large-section road tunnels, analyzes the changes the displacement field and stress field in the surrounding rock after the excavation support of tunnels, and concludes the twin-side heading method has the smallest displacement changes, even stress and it can bitterly maintain the stability of the surrounding rock. |
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| Keywords: | arge-section excavation method numeric simulation twin-side heading method |
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