首页|高性能混凝土加固隧道衬砌力学性能综述

高性能混凝土加固隧道衬砌力学性能综述

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由于外部荷载和环境等因素影响,服役过程中的隧道常出现结构变形、管片开裂等病害,容易引发隧道安全事故,需要对受损隧道进行加固处理.通过分析国内外关于高性能混凝土加固隧道衬砌的研究现状,对UHPC、ECC和钢板-高性能混凝土组合加固隧道衬砌的作用机理和力学性能进行系统分析.三种类型高性能混凝土加固隧道衬砌均可以通过界面黏结达到加固层与衬砌协同作用的效果,在结构内部产生应力重分布,提高衬砌的承载力、韧性和耐久性.UHPC加固后的管片承载力能够提高30.0%～103.0%;ECC加固隧道衬砌后断裂韧性提高可达181.0%;钢板-高性能混凝土组合加固管片比未加固的普通混凝土管片极限弯矩提升了284.0%～467.0%.此外,对高性能混凝土加固隧道衬砌提出了进一步研究建议.
Overview on Mechanical Properties of a Tunnel Lining Reinforced by High-performance Concrete
Due to the factors such as external load and environment,a tunnel in service is often vulnerable to the de-fects such as structural deformation and segment cracking,and such defects are very likely to cause tunnel safety ac-cidents.Therefore a damaged tunnel needs to be reinforced.With a review on the domestic and foreign research into tunnel lining reinforced by high-performance concrete,the action mechanism and mechanical properties of the com-bination of UHPC,ECC and steel plate-high-performance concrete that are used to reinforce tunnel lining are sys-tematically analyzed herein.For the three types of high-performance concrete that are used to reinforce tunnel lining,the synergistic effect between the reinforcing layer and lining can be achieved through interfacial bonding.Then stress redistribution occurs inside the structure,so as to enhance the bearing capacity,toughness and durability of lining.When reinforced by UHPC,the bearing capacity of a segment can increase by 30.0%～103.0%.When the tunnel lining is reinforced by ECC,the cracking toughness increases by up to 181.0%.When reinforced by steel plate and high-performance concrete,the ultimate bending moment of a segment increases by 284.0%～467.0%as compared with an unreinforced plain concrete segment.Besides,this paper offers suggestions regarding further research into the high-performance concrete used to reinforce tunnel lining.

High-performance concreteTunnel liningInterface characteristicsReinforcement mechanismMe-chanical properties

陈猛、梁中龙、于航、孙浚淇、张通

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东北大学资源与土木工程学院,沈阳 110819

高性能混凝土 隧道衬砌 界面特性 加固机理 力学性能

国家自然科学基金资助项目国家自然科学基金资助项目中央高校基本科研业务专项资金资助项目中央高校基本科研业务专项资金资助项目中国博士后创新人才支持计划中国博士后科学基金项目

5217838252308395N2201023N2301023BX202300632023M730526

2024

10.13807/j.cnki.mtt.2024.03.008

现代隧道技术
中铁西南科学研究院有限公司 中国土木工程学会隧道及地下工程分会

现代隧道技术

CSTPCD北大核心
影响因子：1.493
ISSN：1009-6582
年,卷(期)：2024.61(3)