| 汶川地震公路隧道普通段震害分析及震害机制研究 |
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| 引用本文： | 崔光耀,刘维东,倪嵩陟,王明年,林国进.汶川地震公路隧道普通段震害分析及震害机制研究[J].岩土力学,2015,36(Z2):439-446. |
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| 作者姓名： | 崔光耀 刘维东 倪嵩陟 王明年 林国进 |
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| 作者单位： | 1. 北方工业大学 土木工程学院，北京 100144；2. 西南交通大学 土木工程学院，四川 成都 610031； 3. 四川省交通厅 公路规划勘察设计研究院，四川 成都 610041 |
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| 基金项目： | 国家自然科学基金（No.51408008，No.41172250）；国家十二五科技支撑项目（No.2012BAK09B06）；西部交通建设科技项目（No..200831800026, No.200831800098）；北方工业大学青年拔尖人才培育计划（No.XN131）。 |
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| 摘 要： | 在汶川地震中隧道普通段出现了严重的震害，为了提高高烈度地震区隧道普通段的抗震性能，通过统计分析汶川地震公路隧道普通段震害调查资料，对隧道普通段进行了震害分析。结果表明，隧道普通段震害主要发生在软岩均一段、软硬围岩交接段软岩部分以及围岩缺陷段。通过三维有限差分数值模拟和现场典型震害分析，研究了公路隧道普通段的震害机制，探明了围岩均一普通段隧道震害机制，即硬岩隧道普通段基本无震害，软岩隧道普通段震害较严重，衬砌结构受地震惯性力影响较大，强制位移次之；探明了围岩软硬交接普通段隧道震害机制，即震害主要发生在软硬围岩交接段软岩部分，震害的主要影响因素为强制位移，地震惯性力次之；探明了围岩缺陷普通段隧道震害机制，即震害主要由地震惯性力造成强制位移影响很小。研究成果可为高烈度地震区公路隧道普通段的抗震设防提供参考。
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| 关 键 词： | 公路隧道 普通段 震害分析 震害机制 |
| 收稿时间： | 2014-12-09 |
Analysis of seismic damage and mechanism of general section of highway tunnel in Wenchuan earthquake |
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| CUI Guang-yao,LIU Wei-dong,NI Song-zhi,WANG Ming-nian,LIN Guo-jin.Analysis of seismic damage and mechanism of general section of highway tunnel in Wenchuan earthquake[J].Rock and Soil Mechanics,2015,36(Z2):439-446. |
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| Authors: | CUI Guang-yao LIU Wei-dong NI Song-zhi WANG Ming-nian LIN Guo-jin |
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| Institution: | 1. School of Civil Engineering, North China University of Technology, Beijing 100144, China; 2. School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 3. Highway Planning, Survey, Design and Research Institute, Sichuan Provincial Communications Department, Chengdu, Sichuan 610041, China |
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| Abstract: | For the tunnel general sections, seismic damage types appeared in Wenchuan earthquake. In order to improve aseismatic performance of tunnel general sections in high intensity earthquake area, by analyzing the seismic survey data of general sections of highway tunnel in Wenchuan earthquake, seismic damage analysis is concluded. The results show that the seismic damages of tunnel general sections occurred mainly in the soft rock of uniform section, the soft rock part of soft and hard surrounding rock and the defect section. Through three-dimensional finite difference numerical simulation and analysis of typical field damage, seismic damage mechanism of highway tunnel general section is studied. The seismic damage mechanism of surrounding rock uniform general section is understood; namely there is almost no seismic damage in the hard rock tunnel general section damage, while the seismic damage is more serious in the soft rock tunnel general section; lining structure is greatly influenced by the seismic inertia force, and forced displacement comes second. The seismic damage mechanism of the soft and hard surrounding rock general section is revealed, that is, the seismic damage occurs mainly in the soft rock part of soft and hard surrounding rock; the main influence factor is the forced displacement, closely followed by seismic inertia force. The seismic damage mechanism of the defect of general section is disclosed, namely the seismic damage is mainly caused by the seismic inertia force, and forced displacement has little effect. These research results can provide reference for the seismic fortification of highway tunnel general section in high intensity earthquake area. |
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| Keywords: | highway tunnel general section seismic damage analysis seismic damage mechanism |
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