摘要
随着中国城市化的快速发展,城市土地资源越来越稀缺,地下空间的开发和利用越来越重要。在深基坑工程中,基坑支护分析一直以来都是土木工程与岩土工程界的研究重点与难点。以某商业综合体深基坑的实际监测数据为研究基础,充分考虑地下水对基坑支护结构的影响,分析了不同水位对基坑支护结构处轴力与水平位移的影响,并运用高斯函数进行拟合,决定系数均大于0.85,拟合效果较好。通过分析可知随着水位的增加,锚桩接头处水平位移也在持续增加;水位深度与锚桩轴力之间的高斯函数关系成正相关性;不同水平位移与轴力之间的高斯函数关系也成正相关。这些高斯函数可为实际工程基坑支护结构的受力分析提供一定的参考价值。
For the rapid development of urbanization in China and the increasing scarcity of urban land resources,the development and utilization of underground space has become more and more important.In the deep foundation pit project,pit support analysis has always been the focus and difficulty of research in civil and geotechnical engineering circle.This paper takes the actual monitoring data of one deep foundation pit of the commercial complex as the research basis,and fully considering the influence of groundwater on the foundation support structure.The effect of different water levels on the axial force and horizontal displacement at the foundation pit support structure is analyzed and fitted with Gaussian function,and the coefficients of determination are all greater than 0.85,which are in a good fit.The analysis result shows that as the water level increases,the horizontal displacement at the anchor pile joint also increases continuously,the Gaussian function relationship between the water level depth and the anchor pile shaft force is positively correlated.The Gaussian function relationship between the different horizontal displacements and the shaft force is also positively correlated.The Gaussian function can provide some reference value for the force analysis of the foundation pit support structure in the actual project.
作者
高飞翔
赵艳龙
苏婷
GAO Feixiang;ZHAO Yanlong;SU Ting(Construction Comprehensive Survey,Research and Design Institute Co.,Ltd.,Beijing 100007,China)
出处
《矿产与地质》
2022年第6期1227-1235,共9页
Mineral Resources and Geology
关键词
基坑支护
地下水
高斯拟合
应力应变
foundation support
groundwater
Gaussian fitting
stress-strain
