MINIMUM MEMBER CURVATURE DUCTILITY CAPACITY FOR A 10-STOREY R/C FRAMED STRUCTURE TO SURVIVE FUTURE CODE DESIGN LEVEL EARTHQUAKE EXCITATIONS IN HONG KONG
To find minimum member curvature ductility capacity for a prototype R/C 10-storey framed structure to survive earthquake excitations for rock site at ultimate limit state (probability of exceedance of 2% in 50 years), a range of member curvature ductility capacities of 4, 5, 6, 8 and 10 were assumed and applied in carrying out inelastic dynamic time-history analyses for corresponding structural damage assessment. The Park and Ang damage index was used as a principal damage measure, which taking account not only of the maximum ductility demand but also the accumulated dissipated energy. Two hysteresis loops of a beam and column obtained by experimental testing were employed in choosing hysteresis models and for calibrating relevant parameters representing the unloading and reloading stiffness degradation, pinching phenomenon and strength degradation.Results show that the realistic member curvature ductility capacity of 4 shall be increased to be 7 at least when the 10-storey structure is required to survive those earthquake excitations.
R/C framed structure Member curvature ductility capacity Time-history analyses hysteresis model Park and Ang damage index
Ping Dong Adrain M.Chandler
College of Civil Engineering, Hunan University, Changsha 410082, P.R. China School of Civil Engineering and the Environment, The University of Southampton, Highfield,Southampto
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
484-489
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）