Dynamic reliability analysis of multi-ribbed composite wall based on damage accumulation

Dynamic reliability of multi-ribbed composite wall based on damage accumulation is calculated. Artificial earthquake samples are generated by using Clough-Penzien power spectral density functions and used as ground motion input. The smooth hysteresis restoring model is adopted as resting force model between stories. Applying equivalent linearization method and solving state equation, statistical values of responses are obtained. According to the damage model of multi-ribbed composite wall, calculation formula for dynamic reliability based on damage accumulation is presented. Dynamic reliabilities of block cracking, wall yielding and wall collapse under frequent earthquake, basic intensity earthquake and rare earthquake are computed respectively. The computed results are compared with the test results to prove the accuracy of the computation. It also illustrates that multi-ribbed composite wall is safe and reliable.