不同冻土区隧道防寒泄水洞的作用和结构型式研究
发布时间：2018-07-23 08:02
【摘要】：高寒地区的公路隧道普遍面临着冻害威胁,极易产生衬砌开裂、边墙挂冰、路面结冰等病害现象,严重影响隧道正常使用和隧道结构安全。防寒泄水洞作为严寒地区较常用的排水设施,已普遍被隧道工程所采用,但在不同隧道中其排水效果相差较大,这是由于对防寒泄水洞作用机理研究甚少,出现防寒泄水洞错误采用所导致的。文章通过分析防寒泄水洞在不同冻土区隧道中的作用,明确了防寒泄水洞在不同冻土区隧道的适用性及其设计要求,并根据稳定冻结的局部多年冻土隧道中防寒泄水洞只是单纯过水作用,提出了新型的防寒泄水洞断面型式、布置设计,降低了排水系统建设成本,减少了防寒泄水洞施工对主洞结构安全和施工进度的影响,保护了多年冻土的原始状态,有利于隧道结构的长期稳定。
[Abstract]:Highway tunnels in high and cold regions are generally faced with the threat of freezing damage, which are easy to produce diseases such as lining cracking, side wall ice hanging, pavement icing and so on, which seriously affect the normal use of tunnels and the safety of tunnel structures. As a common drainage facility in cold regions, cold tunnel has been widely used in tunnel engineering, but its drainage effect is quite different in different tunnels, which is due to the lack of research on the mechanism of cold drain tunnel. Cold-proof drainage tunnel error caused by the use. Based on the analysis of the function of the cold-proof drain tunnel in different frozen soil regions, the applicability and design requirements of the cold-proof drain tunnel in different frozen soil regions are clarified in this paper. According to the fact that the freeze-proof tunnel in the local permafrost tunnel is only overflowing, a new section type of cold-proof drain tunnel is put forward, and the design of the tunnel layout reduces the construction cost of drainage system. It reduces the influence of the construction of the cold-proof drain tunnel on the safety and construction schedule of the main tunnel, protects the original state of the permafrost, and is beneficial to the long-term stability of the tunnel structure.
【作者单位】： 同济大学土木工程学院地下建筑与工程系;中铁第四勘察设计院集团有限公司;
【基金】：国家科技支撑计划课题(2014BAG05B00) 交通部西部交通建设科技项目(2011318799740)
【分类号】：U453.6
本文编号：2138738
[Abstract]:Highway tunnels in high and cold regions are generally faced with the threat of freezing damage, which are easy to produce diseases such as lining cracking, side wall ice hanging, pavement icing and so on, which seriously affect the normal use of tunnels and the safety of tunnel structures. As a common drainage facility in cold regions, cold tunnel has been widely used in tunnel engineering, but its drainage effect is quite different in different tunnels, which is due to the lack of research on the mechanism of cold drain tunnel. Cold-proof drainage tunnel error caused by the use. Based on the analysis of the function of the cold-proof drain tunnel in different frozen soil regions, the applicability and design requirements of the cold-proof drain tunnel in different frozen soil regions are clarified in this paper. According to the fact that the freeze-proof tunnel in the local permafrost tunnel is only overflowing, a new section type of cold-proof drain tunnel is put forward, and the design of the tunnel layout reduces the construction cost of drainage system. It reduces the influence of the construction of the cold-proof drain tunnel on the safety and construction schedule of the main tunnel, protects the original state of the permafrost, and is beneficial to the long-term stability of the tunnel structure.
【作者单位】： 同济大学土木工程学院地下建筑与工程系;中铁第四勘察设计院集团有限公司;
【基金】：国家科技支撑计划课题(2014BAG05B00) 交通部西部交通建设科技项目(2011318799740)
【分类号】：U453.6
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