| 四车道特大断面大跨度隧道施工中支护体系力学性态研究 |
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| 引用本文： | 周丁恒,曹力桥,马永峰,房师涛,王坤.四车道特大断面大跨度隧道施工中支护体系力学性态研究[J].岩石力学与工程学报,2010,29(1):140-148. |
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| 作者姓名： | 周丁恒 曹力桥 马永峰 房师涛 王坤 |
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| 作者单位： | (1. 慕尼黑工业大学，德国 慕尼黑 81245；2. 中铁第四勘察设计院集团有限公司，湖北 武汉 430063；3. 中石油华东勘察设计研究院，;山东 青岛 266071；4. 中铁二院工程集团有限责任公司，四川 成都 610031；5. 同济大学 地下建筑与工程系，上海 200092); |
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| 摘 要： | 以目前国内规模最大的双洞八车道高速公路隧道为背景，详细介绍四车道特大断面大跨度隧道施工过程中支护体系应力现场监测的项目、方法及手段，对不同施工工序下隧道支护体系力学性态进行监测与分析。研究结果表明：(1) 右导洞上台阶、左导洞下台阶和核心土上台阶开挖引起支护体系应力分布较大变化，是隧道主要监测控制点；(2) 封闭支护结构及对拉锚杆的使用是改善结构受力和抑制隧道变形有效途径，应尽早施作仰拱和形成封闭环。研究成果可为日后类似工程的设计、施工和研究提供有益的借鉴和参考。
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| 关 键 词： | 隧道工程四车道特大断面大跨度隧道应力监测力学性态 |
| 收稿时间： | 2009-6-3 |
| 修稿时间： | 2009-8-5 |
RESEARCH ON CONSTRUCTION BEHAVIORS OF SUPPORT SYSTEM IN FOUR-LANE ULTRA LARGE-SPAN TUNNEL WITH SUPER-LARGE CROSS-SECTION |
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| ZHOU Dingheng,CAO Liqiao,MA Yongfeng,FANG Shitao,WANG Kun.RESEARCH ON CONSTRUCTION BEHAVIORS OF SUPPORT SYSTEM IN FOUR-LANE ULTRA LARGE-SPAN TUNNEL WITH SUPER-LARGE CROSS-SECTION[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(1):140-148. |
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| Authors: | ZHOU Dingheng CAO Liqiao MA Yongfeng FANG Shitao WANG Kun |
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| Affiliation: | (1. Technical University of Munich，Munich 81245，Germany；2. China Railway Siyuan Survey and Design Group Co.，Ltd.，Wuhan，Hubei 430063，China；3. China Petroleum East China Design Institute，Qingdao，Shandong 266071，China；4. China Railway Eryuan Engineering Group Co.，Ltd.，Chengdu，Sichuan 610031，China；5. Department of Geotechnical Engineering，Tongji University，Shanghai 200092，China) |
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| Abstract: | Based on the largest highway tunnel with two holes and eight lanes in China,the contents,technique and method of the stress monitoring of the support system are described. The tunnel stresses during different construction procedures are monitored and analyzed. The results show that:(1) The construction of the up-stage in the right hole,the down-stage in the left hole and the up-stage of the core soil are the main points changing the stress distribution of the support system greatly. (2) The enclosure of lining and using of the cross anchor are effective methods to improve the performance of lining and restrain the deformation of the tunnel. Therefore,it is important to construct the inverted arch and enclose the lining. The results can be adopted in the design,construction and research of similar tunnels. |
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| Keywords: | tunnelling engineering four lanes ultra large-span tunnel with super-large cross-section stress monitoring mechanical behaviors |
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