地铁、公路大断面隧道结构变形缝渗漏水处理  

Water Leakage Treatment of Deformation Joint of Subway and Highway Large-section Tunnel Structure

作　　者：欧志刚 OU Zhigang(Guangzhou Tailisi Consolidation and Reinforcement Engineering Co.,Ltd.Guangzhou 510375,China)

机构地区：[1]广州市泰利斯固结补强工程有限公司,广州510375

出　　处：《广东土木与建筑》2023年第4期96-98,共3页Guangdong Architecture Civil Engineering

摘　　要：地铁与公路结构大断面结构隧道,受结构形式及荷载影响,特别是气候温差变化产生的收缩,对公路隧道与地铁连接位,因两结构断面高差不同,受结构应力约束不同,变形缝受结构应力拉张出现渗-流问题。为减控结构外渗流水量和水头压力,对变形缝外进行稳定性水泥浆与EAA高渗透性亲水环氧注浆材料的复合注浆,增强了不同结构连接位的止水补强效果,结合修复变形缝两侧的渗漏水,恢复和加强变形缝的收缩变形止水效果。工程经过5年多的观察,其整体稳定性、施工质量与治理效果均达到预期的目标和设计要求,进而确保了结构的耐久性能和运营安全。通过施工实例,着重论述解决异型大断面变形缝渗漏水的处理问题,为今后这类渗-流水病害问题的处理,探讨一可操作性并具有时效性的处理方法。Subway and highway structure large section structure tunnel,affected by the structure form and load,especially the shrinkage caused by the change of climate and temperature difference.For the connection position between highway tunnel and subway,because of the different section height difference between the two structures and the different structural stress constraints,the deformation joint is stretched by structural stress,which leads to seepage-flow problem.In order to reduce and control the seepage water and head pressure outside the structure,the composite grouting of stable cement slurry and EAA high permeability hydrophilic epoxy grouting material outside the deformation joint is carried out,which enhances the water stop reinforcement effect of different structural joints.Combined with repairing the leakage water on both sides of the deformation joint,the shrinkage deformation water stop effect of the deformation joint is restored and strengthened.After more than five years' observation,the overall stability,construction quality and treatment effect of the project have reached the expected goals and design requirements,thus ensuring the durability and operation safety of the structure.Through construction examples,focuses on the treatment of seepage water in deformation joints with large special sections,and discusses an operable and time-effective treatment method for the treatment of this kind of seepage-flow disease in the future.

关 键 词：公路隧道 地铁隧道 变形缝 漏水 复合注浆 处理 

分 类 号：TU943.1[建筑科学—建筑技术科学]