在役建筑结构的剩余寿命预测

The Prediction of Residual Life for Existing Building Structures

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．

Some concepts about lives of existing building structures are first reviewed in this paper.Using the state-of-art research achievements on structural resistance, on the basis of taking structural resistance as a non-smooth stochastic process and the definition of service reliability,a new calculation method of residual life for existing building structures is presented based on the definition of acceptable minimal service reliability according to the limit state of sectional constraints,providing a theoretical basis for the whole-life optimization of existing building structures.