摘要
本文采用北京平原地区的PS-InSAR时序监测结果(2003年~2009年),结合GIS空间分析构建北京平原区沉降数据。选取地质区域类似,沉降量最大的山顶点和沉降量最小的山谷点为典型研究区,针对公路汽车、地铁、火车等动荷载,选取主干道影响区域为动载荷影响区;进一步,选取2个典型时段,分析山顶点和山谷点在道路缓冲中分布;最后,定量分析动载荷对北京市典型区沉降影响。研究结果表明,动载荷是北京平原区冲积扇边缘沉降主要影响因素之一,尤其是在地下水大量抽取期间。
Based on the results of PS-InSAR monitoring in Beijing plain(2003~2009),this paper constructs the subsidence data of Beijing plain with GIS spatial analysis.In the typical study area,the geological conditions are similar,and the subsidence difference is large.For the dynamic loads of road vehicles,subway,trains et al.,the main road impact area is selected as the dynamic load impact area.Furthermore,two typical time periods are selected to analyze the distribution of peak point and valley point in the road buffer.Finally,the settlement of Beijing typical area under dynamic loads is quantitatively analyzed.The results show that the dynamic load is one of the main factors that affect the edge settlement of alluvial fan in Beijing plain,especially during the period of groundwater extraction.
作者
郑佳荣
任小强
司典浩
张超
张丽丽
陈蓓蓓
Zheng Jiarong;Ren Xiaoqiang;Si Dianhao;Zhang Chao;Zhang Lili;Chen Beibei(Beijing Polytechnic College,Beijing 100042,China;CIGIS LIMITED,Beijing 100007,China;Experimental Center of Beijing Municipal Construction Group Co.,Ltd,Beijing 100097,China;College of Resources Environment and Tourism Capital Normal University,Capital Normal University,Beijing 100048,China)
出处
《工程勘察》
2023年第2期51-54,共4页
Geotechnical Investigation & Surveying
基金
地铁与地下管廊工程施工安全保障关键技术研究(2017YFC0805400)
无人机应用于市政建设全过程研究(BGY2020KY-07Z)
BIM模型与无人机三维实景模型融合应用在市政工程建设中的研究(BGY2020KY-09Z)。
