基于GIS的沉降监测数据分析及其三维模拟

Analysis of subsidence survey data and demo of three-dimensional model based on GIS

应用GIS专业软件ArcView中的空间分析和三维分析模块,以西安超英大厦实测所获得的基础数据为例,研究了通过对观测数据的综合处理和分析,利用DEM(数字高程模型)建立大厦沉降曲线图和沉降三维模拟图的方法,并最终生成了目标图形。结果表明以ArcView生成沉降曲线图比传统方法更快捷、简单、准确,沉降三维模拟图更直观、生动、逼真,可及时、有效地将沉降信息和变形情况反映给项目决策者和施工人员以提高作业效率和精度,从而为整个工程提供技术支持和决策依据,是一种快速、准确表达沉降观测成果的有效方法。

Taking the basic data from Chaoying mansion in Xi′an city as on example method that apply professional software ArcView of GIS, to establish subsidence graph and three-dimensional simulated subsidence chart of is studied through synthetic processing and analysis. It is pointed that DEM can realize expression of above expectant production and create target figure finally. The results indicated that subsidence graph and three-dimensional simulated subsidence chart by ArcView could represent more quickly, briefly, accurately and more intuitively, vividly, truly than traditional means. For decision-makers or builders, they can achieve subsidence and distortion information effectively in order to improve efficiency and precision. Thereby it can provide sustaining technique and decision-making basis. It is an effective measure to express subsidence observation results.