基于网格化和雷达图的建筑群抗震韧性评估方法研究及应用
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作者单位:

1.东华理工大学;2.云南省地质环境监测院;3.湖南城市学院

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中图分类号:

X43

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国家自然科学(52268020,51568001)


Research and Application of Seismic Resilience Evaluation Method for Building Groups Based on Grid and Radar Maps
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Affiliation:

1.East China University of Technology;2.Yunnan Institute of Geological Environment Monitoring;3.Hunan City University

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    摘要:

    目前的抗震韧性评估主要是针对单一地震对单体建筑的影响,难以考虑对同一地区不同建筑群的抗震韧性评估。本文将研究区域按500m×500m进行网格划分,进行地震危险性分析。以建筑群设防所需费用、不同程度受损面积、房屋直接经济损失、修复时间、修复费用和伤亡人数6个指标作为抗震韧性评价指标,运用层次分析法确定各指标权重,建立基于网格化和雷达图的建筑群抗震韧性评估模型,并将该模型运用到成都市。研究结果表明:未提升设防时,成都市抗震韧性一般;在提升1度设防后,设防所需费用增加45.95%,不同程度受损面积、房屋直接经济损失、修复时间、修复费用、伤亡人数分别减少26.25%、37.75%、45.1%、44.24%、48.18%。通过对比分析该模型数据发现,提升1度设防后,成都市建筑群抗震韧性综合效益提升40.8%,灾害损失大量减少,提升效果明显。

    Abstract:

    The current seismic toughness assessment is mainly aimed at the impact of a single earthquake on a single building, it is difficult to consider the seismic toughness assessment of different buildings in the same area. In this paper, the research area is divided into grids according to 500m×500m, and seismic risk analysis is carried out. Six indexes, including the cost of building defense, damaged area of different degrees, direct economic loss of buildings, repair time, repair cost and casualties, were taken as the evaluation indexes of earthquake resilience. Analytic Hierarchy Process (AHP) was used to determine the weights of each index, and an earthquake resilience evaluation model based on grid and radar map was established and applied to Chengdu City. The results show that the earthquake toughness of Chengdu city is normal when the fortification is not upgraded; After upgrading the fortification, the cost of fortification increased by 45.95%, and the damaged area, the direct economic loss of the house, the repair time, the repair cost and the number of casualties decreased by 26.25%, 37.75%, 45.1%, 44.24% and 48.18%, respectively. Through comparative analysis of the model data, it is found that after upgrading the fortification, the comprehensive benefit of earthquake resilience of Chengdu buildings is increased by 40.8%, the disaster loss is greatly reduced, and the improvement effect is obvious.

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昌毅,万凯,刘新权,等. 基于网格化和雷达图的建筑群抗震韧性评估方法研究及应用[J]. 科学技术与工程, , ():

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  • 收稿日期:2024-01-30
  • 最后修改日期:2024-04-02
  • 录用日期:2024-04-08
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