摘要
本文基于工程实测数据和数值模拟结果,对南宁某深基坑的变形特征进行了分析研究。研究结果表明:泥炭质土地层中,受基坑形状影响,支护结构水平位移存在明显的空间效应,呈角部位移小、中部位移大的特征,可充分利用基坑"角部效应"进行基坑支护结构优化。基坑深层土体水平位移分布形态受支护结构形式、泥炭质土地层分布及监测点所在位置影响较大,宜根据空间位置的不同,合理设计基坑水平支护结构。研究成果可为泥炭质土地层中深基坑的设计和施工提供参考。
Based on the engineering measured data and numerical simulation results,the deformation characteristics of a deep foundation pit in Nanning are analyzed.The study results show that:due to the shape of the foundation pit,the horizontal displacement of the supporting structure has obvious spatial effect,with the characteristics of the small angular displacement and the large displacement in the middle.Therefore,the foundation pit support structure can be optimized by utilizing the"corner effect"of the foundation pit.The horizontal displacement distribution pattern of the deep soil in the foundation pit is greatly affected by the form of support structure,distribution of peat soil layer and location of monitoring points.It is advisable to design the horizontal supporting structure of the foundation pit according to the spatial position.This study results have the directive significance for the design and construction of the similar projects.
作者
郑轩
陈淑婧
Zheng Xuan;Chen Shujing(China Nuclear Power Engineering Co.,Ltd.,Beijing 100048,China;National Academy for Mayors of China,Beijing 100029,China)
出处
《工程勘察》
2020年第6期9-13,共5页
Geotechnical Investigation & Surveying
关键词
深基坑
泥炭质土
深层土体水平位移
角部效应
数值模拟
deep foundation pit
peat soil
horizontal displacement of deep soil
corner effect
numerical simulation
