摘要
基坑围护墙、坡顶及其背后土体的沉降变形是基坑工程安全的重要指标。通过分析结构的沉降量及沉降速率,可以为施工提供科学性指导。通过小基线集时序干涉雷达技术(SBAS-InSAR)获取了大连湾海底隧道南岸基坑群为期2 a(2020年8月29日—2022年5月27日)的平均沉降速率及竖向累计沉降量,结果显示该区域最大沉降量达75.3 mm,通过实测水准数据对监测结果进行验证,验证结果显示,该技术应用于基坑监测是可行的。
The settlement deformation of the retaining wall,slope top and the soil behind it is an important index for the safety of foundation pit engineering.By analyzing the settlement amount and settlement rate of the structure,scientific guidance can be provided for engineering construction.The average settlement rate and vertical cumulative settlement of the foundation pit group on the south bank of Dalian Bay Subsea Tunnel for two years(from August 29,2020 to May 27,2022)were obtained by small baseline set time series Interferometric Radar Technology(SBAS-InSAR).The results show that the maximum settlement in this area is 75.3 mm.The monitoring results were verified using measured leveling data.The verification results show that is feasible to apply this technology to foundation pit monitoring.
作者
刘成洲
张圣山
于健
张国梁
孙文豪
刘钊
LIU Cheng-zhou;ZHANG Sheng-shan;YU Jian;ZHANG Guo-liang;SUN Wen-hao;LIU Zhao(CCCC Tianjin Port Engineering Institute Co.,Ltd.,Tianjin 300222,China;CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China;Key Laboratory of Port Geotechnical Engineering of Ministry of Communications,Tianjin 300222,China;Tianjin Key Laboratory of Construction,Operation and Maintenance Technologies for Underwater Tunnels,Tianjin 300461,China;Huzhou CCCC Investment Development Co.,Ltd.,Beijing 100020,China)
出处
《中国港湾建设》
2023年第10期20-25,共6页
China Harbour Engineering
基金
中国交通建设股份有限公司科技研发基金(2021-ZJKJ-11)。
