基于遥感影像的建筑抗震能力分析——以张家口万全区为例

Analysis of Seismic Capacity of Buildings Based on Remote Sensing Image——Taking Zhangjiakou Wanquan District as An Example

据震害统计,房屋抗震能力是影响灾害的主要因素,抗震能力一般由房屋抗震设防水平、结构类型、建造年代和房屋层数等因素决定,通过对房屋抗震能力的综合评定,以便采取更有针对性的地震灾害对策。本文通过遥感影像实现房屋基本信息的快速提取,提高房屋结构类型获取的便捷性,具有较高的准确度和可靠度,并利用抽样调查得到张家口万全区房屋建造年代和层数分布特点,结合当地抗震设防水平,建立房屋抗震能力指数指标体系,阐述房屋抗震能力现状,为地震灾害损失评估、风险普查、风险区划等工作提供参考。

According to the statistics of earthquake damage,the anti-seismic capacity of buildings is the main factor affecting the disaster.The anti-seismic capacity is generally determined by the level of anti-seismic fortification,the type of structure,the construction age and the number of floors of buildings.Through the comprehensive evaluation of the anti-seismic capacity of buildings,we can take more targeted earthquake disaster countermeasures.In this paper,the basic information of buildings is extracted quickly by remote sensing image,which improves the convenience of obtaining the type of building structure,and has high accuracy and reliability.The distribution characteristics of building construction age and story number are obtained by sampling survey in Wanquan District of Zhangjiakou.Combined with the local seismic fortification level,the index system of building seismic capacity is established,and the current situation of building seismic capacity is expounded,It is of great significance for earthquake disaster loss assessment,risk census and risk zoning.