设计基准期内地震活动区域既有结构寿命模型  

LIFETIME MODEL FOR EXISTING STRUCTURES DURING DESIGN REFERENCE PERIOD OF EARTHQUAKE ACTIVITY AREA

作　　者：高珺 姚继涛[1,2] 程正杰 GAO Jun;YAO Ji-tao;CHENG Zheng-jie(School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China;Key Lab of Structural Engineering and Earthquake Resistance,Ministry of Education,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China)

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]西安建筑科技大学结构工程与抗震教育部重点实验室,陕西西安710055

出　　处：《工程力学》2023年第12期124-132,共9页Engineering Mechanics

基　　金：国家自然科学基金项目(51278401)。

摘　　要：在时变条件下,考虑结构的累积损伤是风险决策的关键点,对结构性能评估及寿命估算有重要意义。但是,结构累积损伤的计算通常涉及复杂的数学运算。基于此,该文的主要目的是在地震高发区,提出一种简化的估算结构寿命分布的模型。该模型假设给定结构的累积损伤仅由设计基准期内可能发生的一系列地震作用产生,此方法的优点在于可以通过简单的数学运算实现结构寿命估算。对所提出的简化结构寿命模型进行实例应用,以验证该方法的可行性。Under time-varying conditions,the key points of risk decision-making are important for structural performance assessment and lifetime estimation when considering structural accumulation damage.However,the calculation of structural cumulative damage is usually involved in complex mathematical operations.Based on this,the main purpose of this paper is to propose a simplified model for estimating the structural lifetime distribution in the seismic high-incidence region.The model assumes that the cumulative damage of an existing structure is only caused by a series of earthquake actions that may occur during the design reference period.And the advantage of this method is that the structural life can be estimated by simple mathematical operation.An example application is performed on the proposed simplified structural lifetime model to verify the feasibility of the method.

关 键 词：钢筋混凝土框架 累积损伤 地震序列 结构寿命 可靠性 

分 类 号：TU375.4[建筑科学—结构工程]