(1 云南大学建筑与规划学院土木系，昆明 650091；2 广西大学防灾减灾与工程安全重点实验室，南宁 530004)

［摘要］  考虑地震激励随机性，以最大层间位移角为性能水平量化指标，采用基于概率密度演化理论的结构地震易损性分析方法，得到结构在不同强度地震作用下各级破坏状态的失效概率。提出结构损失期望与全寿命费用的计算方法，从而实现对结构全寿命周期的性能评估。最后，以钢筋混凝土框架结构住宅楼为例，将概率密度演化理论应用于结构全寿命费用的计算中，提高了损失期望与全寿命费用评估精度。 

［关键词］概率密度演化理论； 随机性； 地震易损性； 损失期望； 全寿命费用 

中图分类号：TU375 文献标识码：A文章编号：1002-848X(2021)12-0062-07

Study on seismic vulnerability and the evaluation method of whole life-cycle cost

LONG Shiqi1,  WANG Xianjie1,2,  ZHOU Xiaofan1,  YANG  Sizhao1,  WANG  Xi1,  DONG  Yanqiu1 

(1 Department of Civil Engineering, School of Architecture and Planning, Yunnan University，Kunming 650091， China；2 Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University，Nanning 530004， China) 

Abstract: Considering the randomness of seismic excitation, taking the maximum inter-story drift as the quantitative index of performance level ，the method of structural overall seismic vulnerability analysis based on probability density evolution theory was adopted, the failure probabilities under different seismic intensity and failure states were obtained. The calculation methods of structural loss expectation and life-cycle cost were proposed to realize the performance evaluation of structural whole life cycle. Finally, taking reinforced concrete frame residential building as an example, the probability density evolution theory was applied to the calculation of structural whole life-cycle cost, which can improve the accuracy of the loss expectation and life-cycle cost evaluation.  

Keywords:probability density evolution theory； randomness； seismic vulnerability； failure loss expectation； life-cycle cost

*广西防灾减灾与工程安全重点实验室研究资助项目（2016ZDK009，2016JYB009），云南省教育厅科学研究基金资助项目（2018Y007），云南大学理(工)科校级科研项目（K1010858）。

 作者简介：龙诗琪，硕士，Email:997238011@qq.com。