大连湾海底沉管隧道施工中管节变形规律监测分析  

Monitoring and analysis of deformation laws of tube elements during the construction of Dalian Bay immersed tunnel

作　　者：孙竹 刘成洲 于健 孙文豪[1,2,4] 刘钊 SUN Zhu;LIU Cheng-zhou;YU Jian;SUN Wen-hao;LIU Zhao(CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China;Tianjin Port Engineering Institute Ltd.of CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300222,China;Key Laboratory of Port Geotechnical Engineering of the Ministry of Communications,Tianjin 300222,China;Tianjin Key Laboratory of Construction,Operation and Maintenance Technologies for Underwater Tunnels,Tianjin 300461,China)

机构地区：[1]中交第一航务工程局有限公司,天津300461 [2]中交天津港湾工程研究院有限公司,天津300222 [3]港口岩土工程技术交通行业重点实验室,天津300222 [4]天津市水下隧道建设及运维技术企业重点实验室,天津300461

出　　处：《中国港湾建设》2024年第4期73-77,共5页China Harbour Engineering

基　　金：2020年度交通运输行业重点科技项目(2020-MS1-064)。

摘　　要：沉管管节间及节段间张合量、沉降变形是沉管隧道工程结构安全的重要指标。以大连湾海底沉管隧道为依托,通过分析水文环境、上覆荷载变化、特殊施工工艺等条件与沉管管节间张合量、沉降量变形的相关性,得到沉管沉降在不同载荷条件的变化规律,管节间及节段间张合量与管内温度呈负相关,钢绞线剪切后一段时间内沉管沉降变形明显增大。为后续管节安装及调整提供可靠依据,确保施工安全,指导后续设计和施工。The tension and settlement deformation between immersed tube segments and sections are important indicators for structural safety of immersed tunnel project.Based on the Dalian Bay immersed tunnel,by analyzing the correlation between the hydrological environment,overlying load changes,special construction techniques,and the deformation of the tension and settlement of immersed tube elements,the variation law of immersed tube settlement under different load conditions was obtained.The tension between the tube segments and sections is negatively correlated with the temperature inside the tube,and the settlement deformation of immersed tube significantly increases after the steel strand is sheared for a period of time.It can provide a reliable basis for the subsequent installation and adjustment of the tube elements to ensure construction safety and guide subsequent design and construction.

关 键 词：沉管隧道 施工监测 沉降量 张合量 变形规律 

分 类 号：U655.4[交通运输工程—港口、海岸及近海工程]