期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Derivation of energy-based base shear force coefficient considering hysteretic behavior and P-delta effects 被引量:2
1
作者 Taner Ucar Onur Merter 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2018年第1期149-163,共15页
A modified energy-balance equation accounting for P-delta effects and hysteretic behavior of reinforced concrete members is derived. Reduced hysteretic properties of structural components due to combined stiffness and... A modified energy-balance equation accounting for P-delta effects and hysteretic behavior of reinforced concrete members is derived. Reduced hysteretic properties of structural components due to combined stiffness and strength degradation and pinching effects, and hysteretic damping are taken into account in a simple manner by utilizing plastic energy and seismic input energy modification factors. Having a pre-selected yield mechanism, energy balance of structure in inelastic range is considered. P-delta effects are included in derived equation by adding the external work of gravity loads to the work of equivalent inertia forces and equating the total external work to the modified plastic energy. Earthquake energy input to multi degree of freedom(MDOF) system is approximated by using the modal energy-decomposition. Energybased base shear coefficients are verified by means of both pushover analysis and nonlinear time history(NLTH) analysis of several RC frames having different number of stories. NLTH analyses of frames are performed by using the time histories of ten scaled ground motions compatible with elastic design acceleration spectrum and fulfilling duration/amplitude related requirements of Turkish Seismic Design Code. The observed correlation between energy-based base shear force coefficients and the average base shear force coefficients of NLTH analyses provides a reasonable confidence in estimation of nonlinear base shear force capacity of frames by using the derived equation. 展开更多
关键词 energy-based base shear force coefficient reduced hysteretic behavior P-delta effect pushover analysis nonlinear time history analysis
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部