(1 华东建筑设计研究院有限公司, 上海 200002; 2 华东建筑集团股份有限公司, 上海 200002)

摘要: 天津高银 117 大厦塔楼建筑高度 597m,塔楼结构体系复杂且竖向荷载大,基础底板埋深约 25 m,场地以黏性土、粉土为主,中间夹有多层厚度变化较大的砂层,采用超长钻孔灌注桩,桩端埋深约 102 m,以⑩5 粉砂层为桩端持力层. 基于塔楼基础底板施工完成至结构封顶后 4. 5 年的基础沉降实测数据,分析了塔楼基础沉降发展特性、沉降分布特征、底板沉降弯曲变形及弯矩值的发展与分布,探讨了塔楼基础沉降与施工进度、上部结构层数的关系,以及上部结构刚度、荷载及群桩刚度对基础沉降的影响机制. 实测基础最大沉降、基础倾斜、相邻柱( 墙) 基的差异沉降皆小于规范控制值,底板弯矩也小于设计取值,表明深基础处于安全状态. 天津高银 117 大厦塔楼基础沉降实测成果为天津地区类似工程安全施工积累了宝贵经验,也为国内软土地区 600 m 级超高层建筑基础工程设计提供了参考.

关键词: 天津高银 117 大厦; 超长桩深基础; 长期沉降实测; 沉降发展特性; 沉降分布特征; 底板沉降弯曲变形

中图分类号:TU473. 12 文献标志码:A 文章编号:1002-848X(2022)

DOI:10. 19701 / j. jzjg. HDY2250

Monitoring and analysis of the foundation settlement of tower of Tianjin Goldin 117 Building

WU Jiangbin1, WANG Weidong2, WANG Adan1, BAO Lianjin1, TONG Jun1

(1 East China Architectural Design & Research Institute Co. , Ltd. , Shanghai 200002, China;2 Arcplus Co. , Ltd. , Shanghai 200002, China)

Abstract: The building height of tower of Tianjin Goldin 117 building is 597m. The structure system of the tower iscomplex and its vertical load is large. The buried depth of the foundation is about 25m. The site is mainly composed ofcohesive soils and silty soils. There are sand layers with large thickness changes in the middle. The super-long bored pilesare used. The buried depth of the pile end is about 102 m. The ⑩5silty sand layer is the bearing layer of the pile end. Thefield monitoring data of the foundation settlement of the tower from the completion of the bottom plate construction to thestructural capping for 4. 5 years were monitored. The settlement development characteristics and settlement distributioncharacteristics, settlement bending deformation and bending moment of the foundation plate were analyzed. The relationshipbetween the tower foundation settlement and the construction progress and the number of superstructure floors, as well asthe influence mechanism of superstructure stiffness, load and pile group stiffness on foundation settlement were discussed.The maximum foundation settlement field monitoring, the foundation inclination and the differential settlement of adjacentcolumn (wall) foundation are less than the standard control value, and the back calculated bending moment of the bottomplate is also less than the design value of bending moment, indicating that the deep foundation of the super high-risebuilding is in a safe state. The measured results of foundation settlement of tower of Tianjin Goldin 117 building haveaccumulated valuable experience for the safe construction of similar projects in Tianjin, and also provided reference data forthe design practice of foundation engineering of 600m-level super high-rise buildings in soft soil areas in China.

Keywords:Tianjin Goldin 117 building; super-long pile deep foundation; long-term settlement field monitoring; settlementdevelopment characteristics; settlement distribution characteristics; settlement bending deformation of baseplate

∗十二五国家科技支撑计划(2012BAJ01B00) ,“上海超高层建筑设计工程技术研究中心”建设项目(14DZ2252800) .

第一作者:吴江斌,博士,教授级高级工程师,主要从事高层建筑地基基础、地基处理、地下工程的设计与研究,Email: jiangbin_wu@ ecadi. com.

[引用本文] 吴江斌,王卫东,王阿丹,等. 天津高银 117 大厦塔楼基础沉降实测与分析[ J] . 建筑结构,2022,52(9) :17-23. WU Jiangbin,WANG Weidong,WANG Adan,et al. Monitoring and analysis of the foundation settlement oftower of Tianjin Goldin 117 Building[ J] . Building Structure,2022,52(9) :17-23.