摘要
在水底隧道对河床基槽进行浚挖施工时,基槽的挖深拓宽会破坏原有护岸结构,降低其安全性能。对此,结合广州鱼珠水底隧道珠江护岸工程,将遮帘桩T型地连墙复合结构与格构式地连墙进行对比,按因地制宜原则选用遮帘桩和T型地连墙复合支护结构;通过三维有限元方法对其水平位移、结构应力等进行模拟仿真计算与分析,探讨其适用性及安全性,并进行优化设计。针对施工区域存在强风化泥质粉砂、淤泥等影响槽壁稳定性、易导致坍塌的不良工况,合理采取施工技术破解难题,最终通过施工监测,各项数据均符合规范要求。
The excavation depth and widening of the foundation trench will damage the existing revetment structure and reduce its safety performance.Combined with the Pearl River revetment project of Yuzhu underwater tunnel in Guangzhou,the curtain pile T-shaped diaphragm wall composite structure is compared with the lattice diaphragm wall.The curtain pile and T-shaped diaphragm wall composite support structure are adopted according to local conditions.Its horizontal displacement and structural stress are simulated and analyzed by three-dimensional finite element method,its applicability and safety are discussed,and the design is optimized.In view of the adverse working conditions such as strongly weathered argillaceous silt and sludge in the construction area,which affect the stability of the tank wall and easily lead to collapse,some construction technologies are reasonably adopted to solve the technical problems.
作者
艾治举
AI Zhi-ju(The 5th Engineering Co.,Ltd.of China Railway 18th Bureau Group,Tianjin 300450,China)
出处
《广东水利电力职业技术学院学报》
2022年第3期16-21,共6页
Journal of Guangdong Polytechnic of Water Resources and Electric Engineering
关键词
沉管隧道
护岸工程
遮帘桩
T型地连墙
三维有限元
immersed tunnel
revetment works
blinding pile
T-shaped diaphragm wall
three-dimensional finite element
