汶川8.0级大地震公路隧道震害调查与震害特征
发布时间：2018-11-28 20:53
【摘要】：研究强震作用下隧道结构的震害特征对于后续高烈度区隧道的抗震设防设计具有重要的借鉴意义。文章通过汶川地震公路隧道震害调查及分析,研究并总结了隧道结构各部分的震害特征。洞口结构的震害特征为:洞外结构受次生地质灾害影响严重,隧道洞口硬岩段支护结构震害极少,8度区隧道洞口软岩段出现二次衬砌开裂、渗水等轻微震害,11度区出现二次衬砌垮塌的严重震害;断层破碎带段隧道结构的震害特征为:跨非活动性断层隧道震害较轻,跨活动性断层隧道震害严重(二次衬砌垮塌、围岩垮塌等);普通段隧道结构的震害特征为:隧道硬岩普通段震害极少,8度区围岩软硬交接普通段和9度区软岩普通段衬砌出现开裂、渗水震害,10~11度区围岩软硬交接普通段出现衬砌错台震害,围岩缺陷普通段出现了二次衬砌垮塌的严重震害。
[Abstract]:The study of seismic damage characteristics of tunnel structure under strong earthquake is of great significance for the seismic fortification design of tunnel in high intensity area. Based on the investigation and analysis of earthquake damage of highway tunnel in Wenchuan earthquake, this paper studies and summarizes the damage characteristics of every part of tunnel structure. The seismic damage characteristics of the structure are as follows: the structure outside the tunnel is seriously affected by the secondary geological hazards, the support structure of the hard rock section of the tunnel mouth is seldom damaged by earthquake, and the soft rock section of the tunnel mouth of the 8 degree tunnel appears secondary lining cracking, water seepage and other minor earthquake damage. The serious earthquake damage of secondary lining collapse occurred in the area of 11 degrees; The seismic damage characteristics of tunnel structure in fault broken zone are as follows: the seismic damage of transactive fault tunnel is light, and the seismic damage of cross-active fault tunnel is serious (secondary lining collapse, surrounding rock collapse, etc.); The characteristics of seismic damage of tunnel structure in ordinary section are as follows: the seismic damage of ordinary section of tunnel hard rock is very little, the lining of soft rock in 8 degree zone and soft rock ordinary section of 9 degree zone is cracked, and the damage of seepage is caused by earthquake. In the 10 ~ (th) ~ (th) area, the earthquake damage of the lining staggered platform appears in the ordinary section of the soft and hard transition of the surrounding rock, and the secondary lining collapse occurs in the common section of the surrounding rock defect.
【作者单位】： 北方工业大学土木工程学院;西南交通大学交通隧道工程教育部重点实验室;四川省交通运输厅公路规划勘察设计研究院;
【基金】：国家自然科学基金项目(51408008;41172250) 四川省应用基础研究计划项目(2014JY0090;2015JY0166) 四川省交通科技项目(2013A1-5) 北方工业大学青年拔尖人才培育计划项目(XN070017)
【分类号】：U452.28
本文编号：2364229
[Abstract]:The study of seismic damage characteristics of tunnel structure under strong earthquake is of great significance for the seismic fortification design of tunnel in high intensity area. Based on the investigation and analysis of earthquake damage of highway tunnel in Wenchuan earthquake, this paper studies and summarizes the damage characteristics of every part of tunnel structure. The seismic damage characteristics of the structure are as follows: the structure outside the tunnel is seriously affected by the secondary geological hazards, the support structure of the hard rock section of the tunnel mouth is seldom damaged by earthquake, and the soft rock section of the tunnel mouth of the 8 degree tunnel appears secondary lining cracking, water seepage and other minor earthquake damage. The serious earthquake damage of secondary lining collapse occurred in the area of 11 degrees; The seismic damage characteristics of tunnel structure in fault broken zone are as follows: the seismic damage of transactive fault tunnel is light, and the seismic damage of cross-active fault tunnel is serious (secondary lining collapse, surrounding rock collapse, etc.); The characteristics of seismic damage of tunnel structure in ordinary section are as follows: the seismic damage of ordinary section of tunnel hard rock is very little, the lining of soft rock in 8 degree zone and soft rock ordinary section of 9 degree zone is cracked, and the damage of seepage is caused by earthquake. In the 10 ~ (th) ~ (th) area, the earthquake damage of the lining staggered platform appears in the ordinary section of the soft and hard transition of the surrounding rock, and the secondary lining collapse occurs in the common section of the surrounding rock defect.
【作者单位】： 北方工业大学土木工程学院;西南交通大学交通隧道工程教育部重点实验室;四川省交通运输厅公路规划勘察设计研究院;
【基金】：国家自然科学基金项目(51408008;41172250) 四川省应用基础研究计划项目(2014JY0090;2015JY0166) 四川省交通科技项目(2013A1-5) 北方工业大学青年拔尖人才培育计划项目(XN070017)
【分类号】：U452.28
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，本文编号：2364229
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