基于GIS的建筑物沉降观测数据的三维分析

摘要

大型建筑物的建设中沉降监测必不可少,本文以成都来福士广场沉降监测工程为例,通过对观测数据的综合处理和分析,利用ArcGIS软件的空间分析和3D分析模块,采用反距离加权插值法,生成DEM（数字高程模型）,最终建立沉降监测数据的三维模拟图和等值线图,并阐述其生成的步骤。结果表明,生成的三维模拟和沉降等值线表达更加直观和生动,有利于施工人员及时、有效地了解沉降变形信息,为工程施工和决策提供技术支持。%Subsidence monitoring is essential in the construction of large buildings,this paper make chengdu LAIFUSHI Square subsidence monitoring project as an example,through the observation data processing and analysis,using the space analysis module and 3D analysis module of the ARCGIS soft,the inverse distance weighted interpolation method,generation digital elevation model（DEM）and finally establish subsidence monitoring data of three dimensional simulation diagram and equivalence value maps,and expound its generation step.The results show that the generation of 3D simulation and contour map expression is more intuitive and vivid,be helpful for construction personnel timely、effective about settlement and deformation information for engineering construction and decision provides the technical support.