In the process of long-term use,the structural performance of high pile wharf will inevitably degrade,which will not only affect the safety and stability,but also have serious impacts on the normal operation and economic bene-fits.Based on the time-dependent reinforced concrete performance degradation model,the stochastic dynamic analysis and time-varying reliability analysis are carried out by combining the direct probability integral method(DPIM),the response probability information and time-varying reliability curves under earthquake excitation under different operat-ing years are obtained.The results show that with the increase of the operation life,the peak value of the displacement PDF and CDF of the wharf superstructure decreases,the dynamic reliability decreases sharply with the service life,and the performance degradation of the reaction structure system accelerates gradually.It shows that reinforced concrete degradation has significant influence on the safety of high pile wharf.
关键词
高桩码头/混凝土耐久性/直接概率积分(DPIM)/可靠度分析/结构性能退化
Key words
high pile wharf/durability of concrete/direct probability integral method(DPIM)/reliability a-nalysis/structural property degradation
维普
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