温州鹿城广场超高层塔楼不同持力层长短桩基础实测与分析  

Field observation and analysis of long-short-pile foundation with different bearing strata of super high-rise tower of Wenzhou Lucheng Plaza

作　　者：摇铖 李保忠 胡达敏 程骏 王昕 方巽科 潘晓东[2] YAO Cheng;LI Baozhong;HU Damin;CHENG Jun;WANG Xin;FANG Xunke;PAN Xiaodong(gad·Zhejiang Greenton Architectural Design Co.,Ltd.,Hangzhou 310007,China;College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]gad杰地设计·浙江绿城建筑设计有限公司,杭州310007 [2]浙江工业大学土木工程学院,杭州310014

出　　处：《建筑结构》2022年第19期66-73,40,共9页Building Structure

摘　　要：温州鹿城广场超高层塔楼地处台风高发的深厚软土地区,采用框架-核心筒-外伸臂结构体系。塔楼桩基施工完成后建筑方案做了重大修改,在原有桩基础方案上进行补桩,综合评估后采用后补非嵌岩短桩与已施工嵌岩长桩协同受力的长短桩基础。由于存在桩距偏小、桩长差别悬殊、持力层差异大、土层分布复杂、上部荷载大等特殊情况,必须考虑上部结构-筏板-桩土的协同作用,并采用有限元方法进行分析。根据土工试验、试桩静载试验、试桩应力和变形等测试结果,拟合出土体本构模型及力学性质等计算所需参数。通过两个邻近超高层项目的有限元计算沉降与实测沉降对比,验证计算参数和分析方法的可靠性。将有限元分析与工程设计软件相结合,解决了塔楼长短桩基础分析设计难题。Super high-rise tower of Wenzhou Lucheng Plaza is located in the typhoon-prone deep soft soil area and adopts frame-corewall-outrigger structural system. After the completion of pile foundation construction, the building plan was greatly adjusted, and the pile filling was carried out on the original pile foundation scheme. After comprehensive evaluation, a long-short pile foundation with post-compensation non-rock-socketed short piles and rock-socketed long piles was used after comprehensive assessment. Due to the too small pile distance, large difference in pile length, difference in bearing strata, complex distribution of strata and large upper load, the superstructure-raft-pile-soil interaction must be considered and analyzed with the finite element method. According to the soil test, pile static load test, stress and deformation measurement of piles, the soil constitutive model and mechanical properties were determined. According to the comparison between the settlement calculated by finite element method and the measured settlement of two adjacent super high-rise buildings, the reliability of the calculation parameters and analytical method were verified. Combining finite element analysis and engineering design software, the analysis and design problems of long and short pile foundation of super high-rise tower was solved.

关 键 词：温州鹿城广场 超高层塔楼 长短桩基础 上部结构-筏板-桩土协同作用 群桩效应 深厚软土地区 

分 类 号：TU473[建筑科学—结构工程]