汶川地震各地震烈度区公路隧道震害特征研究

发布时间：2018-05-01 16:25

本文选题：地震烈度区 + 公路隧道　；参考：《现代隧道技术》2014年06期

【摘要】：文章结合汶川地震震区大量公路隧道震害资料,对各地震烈度区公路隧道震害特征进行了研究。结果表明:6度区隧道均未破坏;7度区出现落石灾害,砸坏洞门、边仰坡结构;8~11度区硬岩隧道洞身衬砌基本无震害,8度区软岩隧道洞身衬砌出现轻微开裂、渗水;9度区软岩隧道洞身衬砌开裂严重,出现网状开裂、大面积渗水,出现混凝土剥落、掉块以及二次衬砌垮塌等,洞口边仰坡出现滑塌、崩塌,堵塞洞门;10度区软岩隧道洞身二次衬砌垮塌增多;11度区软岩隧道洞身出现围岩垮塌。研究成果对进一步研究高烈度地震区公路隧道震害机理及抗震对策有着重要的意义。
[Abstract]:Based on a large number of earthquake damage data of highway tunnels in Wenchuan earthquake area, this paper studies the earthquake damage characteristics of highway tunnels in various seismic intensity areas. The results show that no damage occurred in the area of 6 ~ (th) ~ (th) of the tunnel, no damage occurred in the area of 7 ~ (th) degree of damage, and the rock falling disaster occurred, and the door of the tunnel was smashed, and the lining of the hard rock tunnel in the area of 8 ~ (11) degree of sideslope structure was slightly cracked in the soft rock tunnel with no earthquake damage. The tunnel lining of soft rock tunnel in the 9 degree zone of seepage water has serious cracking, such as network cracking, large area water seepage, concrete spalling, falling block and secondary lining collapse, etc., and the slope of the mouth side of the tunnel collapses and collapses. The secondary lining collapse of soft rock tunnel in 10 degree zone is increased and the surrounding rock collapse occurs in soft rock tunnel in 11 degree area. The research results are of great significance to further study the earthquake damage mechanism and seismic countermeasures of highway tunnel in high intensity earthquake area.
【作者单位】：北方工业大学土木工程学院;西南交通大学土木工程学院;四川省交通厅公路规划勘察设计研究院;
【基金】：国家自然科学基金(51408008,41172250) 国家十二五科技支撑项目(2012BAK09B06) 西部交通建设科技项目(200831800026,200831800098)
【分类号】：U452.28

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