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讨论有关在役建筑结构寿命的若干概念，利用在役结构抗力衰减研究的最新成果，在将在役建筑结构截面抗力看成一非平稳随机过程和定义结构服役可靠度的基础上，根据截面效应约束极限状态，直接计算在役结构的服役可靠度，并基于可接受的最低服役可靠度，提出了在役建筑结构剩余寿命计算的新方法，从而为在役建筑结构的全寿命优化决策奠定了基础．
To discuss the concepts related to the service life of building structures in service, and to use the latest results of research on the resistance attenuation of existing service structures, on the basis of considering the cross-section resistance of building structures in service as a non-stationary stochastic process and the definition of structural service reliability, according to the cross-section effect constraints. In the limit state, the service reliability of the in-service structure is directly calculated, and based on the acceptable minimum service reliability, a new method for the calculation of the remaining life of the in-service building structure is proposed, thus laying the foundation for the overall life optimization decision-making of the in-service building structure. .