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

引用文献:

摇铖, 李保忠 ,胡达敏, 程骏 ,王昕 ,方巽科, 潘晓东. 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[J]. 建筑结构,2022,48(19):66-73,40.

YAO Cheng ,LI Baozhong, HU Damin ,CHENG Jun, WANG Xin ,FANG Xunke ,PAN Xiaodong. Field observation and analysis of long-short-pile foundation with different bearing strata of super high-rise tower of Wenzhou Lucheng Plaza[J]. Building Structure,2022,48(19):66-73,40.

作者:摇铖, 李保忠 ,胡达敏, 程骏 ,王昕 ,方巽科, 潘晓东
单位:gad杰地设计·浙江绿城建筑设计有限公司,浙江工业大学土木工程学院
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。
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
作者简介:摇铖,硕士,助理工程师,主要从事建筑结构设计研究工作,Email:yaoc233@qq.com。李保忠,博士,高级工程师,一级注册结构工程师,主要从事结构设计工作,Email:libaozhong@gad.com.cn。
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参考文献[1] 李保忠,王昕,李根,等.温州鹿城广场低烈度台风区超高层塔楼结构设计[J].建筑结构,2022,52(19):1-8.
[2] 建筑桩基技术规范:JGJ 94—2008[S].北京:中国建筑工业出版社,2008.
[3] 张忠苗,张乾青,张广兴,等.软土地区大吨位超长试桩试验设计与分析[J].岩土工程学报,2011,33(4):535-543.
[4] 张忠苗,张乾青.桩端土强度对桩侧阻力影响的研究[J].岩土工程学报,2010,32(S2):59-63.
[5] HARRY G.POULOS,GRAHAME BUNCE.Foundation design for the Burj Dubai – the world’s tallest building[C]//6th International Conference on Case Histories in Geotechnical Engineering.Arlington,2008.
[6] 王卫东,申兆武,吴江斌.桩土-基础底板-上部结构协同的实用分析方法与应用[J].建筑结构,2007,37(5):111-113,129.
[7] 孙宏伟,常为华,宫贞超,等.中国尊大厦桩筏协同作用计算与设计分析[J].建筑结构,2014,44(20):109-114.
[8] 巢斯,赵锡宏,张保良,等.超高层建筑桩筏基础的桩顶反力计算研究[J].岩土力学,2011,32(4):1138-1142,1148.
[9] 李海生.基于Plaxis的大直径素混凝土桩复合地基数值分析[J].铁道建筑技术,2016(9):109-112.
[10] 罗景崭,范全林.基于理正岩土软件和Plaxis在某工程实例沉降计算的对比[J].建筑技术开发,2019,46(12):104-106.
[11] 王媛,孙宏伟.北京Z15地块超高层建筑桩筏基础的数值分析[J].建筑结构,2013,43(17):134-139.
[12] PLAXIS B V.Plaxis 3D reference manual (version 2018)[M].Delft:Bentley Systems,2018.
[13] 徐至钧,赵锡宏,陈祥福,等.超高层建筑结构设计与施工[M].北京:机械工业出版社,2007.
[14] 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.
[15] 王明珉,刘攀,王垚,等.嵌岩群桩基础间增补非嵌岩短桩的作用机理及荷载分配规律[J].建筑结构,2022,52(2):22-27.
[16] 张忠苗,贺静漪,张乾青,等.温州323m超高层超长单桩与群桩基础实测沉降分析[J].岩土工程学报,2010,32(3):330-337.
[17] 董明,余梦麟,包佐,等.温州世界贸易中心结构设计[J].建筑结构,2010,40(3):36-39.
[18] 建筑地基基础设计规范:GB 50007—2011[S].北京:中国建筑工业出版社,2012.
Field observation and analysis of long-short-pile foundation with different bearing strata of super high-rise tower of Wenzhou Lucheng Plaza
YAO Cheng ,LI Baozhong, HU Damin ,CHENG Jun, WANG Xin ,FANG Xunke ,PAN Xiaodong
(gad·Zhejiang Greenton Architectural Design Co.,Ltd. College of Civil Engineering, Zhejiang University of Technology)
Abstract: 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.
Keywords: Wenzhou Lucheng Plaza; super high-rise tower; long-short-pile foundation; superstructure-raft-pile-soil interaction; pile group effect; deep soft soil area
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