某超高层桩基基础沉降计算探讨  

SETTLEMENT ANALYSIS OF PILE FOUNDATION OF A HIGH-RISE STRUCTURE

作　　者：梁战场 陈文华 丘创宝 温子贤 龚伟 LIANG Zhanchang;CHEN Wenhua;QIU Chuangbao;WEN Zixian;GONG Wei(Power China Urban Planning&Design Institute Co.,Ltd.,Guangzhou 510000,China;Guangzhou BXHH Architectural Engineering Design Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]中国电建集团城市规划设计研究院有限公司,广州510000 [2]广州宝贤华瀚建筑工程设计有限公司,广州510000

出　　处：《低温建筑技术》2022年第2期155-158,165,共5页Low Temperature Architecture Technology

摘　　要：桩端有深厚可压缩土层时可能会产生较大沉降,根据规范计算的沉降量与实测值往往相差较大,文中以某桩筏基础为例,首先用Mindlin方法计算基础沉降,并用岩土通用限元软件PLAXIS对沉降进行校核;然后用现场静载试验的沉降值和软件计算的单桩沉降值进行对比分析,以期校核土层参数及群桩的沉降值,并由此预测更接近实际的桩基沉降,得出结论可为类似工程提供参考。Large settlement may occur as the pile end has a deep and thick compressible soil layer.The settlement calculated according to the specification is often very different from the actual measured value.Taking a pile raft foundation as an example,the Mindlin method is used to calculate the foundation settlement,and the settlement was checked by PLAXIS software.The settlement value of the on-site static load test was compared with that of the single pile calculated by the software to check the soil parameters and the settlement value of the pile group,based on which the actual settlement of the pile foundation was predicted.Finally,the suggestions are summarized for reference in similar projects.

关 键 词：桩筏基础 MINDLIN 单桩沉降 群桩沉降 静载试验 

分 类 号：TU473.1[建筑科学—结构工程]