摘要
在典型的黄土地层条件下,以地铁车站深基坑降水引起的地面沉降为主要研究对象,发现现场实测值与理论计算值之间存在明显的差异,从黄土地层的特异性方面解释了差异的主要原因,并从地层变形机理层面阐述了降水对黄土地层沉降的具体影响,明确了现行规范中关于地层沉降计算公式的局限性,最后从实测数据出发,基于最小二乘法,得出了黄土地层由降水导致的地层沉降的经验公式。
As for the typical loess strata, take the ground settlement caused by dewatering of deep foundation pit as the main subject of study, the obvious discrepancies between field measured values and calculated values were found. The discrepancy is explained from the specificity of loess strata, and the specific influences on loess strata settlement caused by dewatering are clarified. The limitation of the currently used calculation formula of ground settlement in relevant standard is pointes out. Finally, in light of the field measured data, and based on the least square method, the empirical formula for ground settlement caused by dewatering in loess strata is obtained.
出处
《铁道标准设计》
北大核心
2013年第2期89-92,共4页
Railway Standard Design
关键词
轨道交通
黄土地层
深基坑
降水
地表沉降
rail transit
loess strata
deep foundation pit
dewatering
ground settlement
