摘要
本文选择青岛地铁车站—利津路站为工程背景,通过采集现场监测数据,并配合软件模拟分析研究深基坑围护结构的变形规律。结果表明:由于地层上部是土质相对较为松散的强风化砂岩层,围护桩的水平位移量随着开挖深度呈现递增趋势;地层下部为较为坚硬的中分化砂岩层,在进入岩层时水平位移出现明显的拐点;基坑周边地表沉降的总体趋势为先增大后减小;数值模拟显示土体应力和桩体所受剪力都不断增加,同时支撑和锚杆的作用,增强了围护结构的稳定性。
This paper choose Qingdao subway station-lijin road station as engineering background, through the field mo-nitoring data,and comply with software simulation analysis and study the deformation ltaining structure. The results ^how that the horizontal displacement of the surroundinvation depth because the upper part of the stratum is the relatively loose sand formation of the soil. The lower part of the stratum s a more rigid layer of stratified sandstone, and the horizontal displacement of tof the strata s obviously inflection point. The overall tendency of ground subsidence in the fouafter the first increase. The numerical simulation shows that both the soil stress and the shear force of the pile are in- creasing,and the support and the role of the anchor are strengthened, and the stability of the enclosure structure is en-hanced.
出处
《北京测绘》
2018年第1期119-122,共4页
Beijing Surveying and Mapping
关键词
变形监测
深基坑
围护桩
位移
应力
deformation monitoring
deep foundation ditch
fender post
displacement
stres
