A Practical Response Spectrum Method to Study the Behavior of a Novel High Speed Railway Station under Multiple Earthquake Excitation
XU Han-yong1,2, YU Zhi-wu1,2
Author information+
1.Central South University, School of Civil Engineering, Changsha 410075, China2. National Engineering Laboratory for High Speed Railway Construction, Changsha 410075, China
A high speed railway station, integrated structure-bridge, was a complex structure, with members having different damping ratio, and with large-span members, so the study about the damping model and practical response spectrum method was conducted. Firstly, based on the principle of damping method with potential energy weighted and modal decomposition, it was founded that the excitation of the damping method was the response of every modal and the calculation formula was proposed by using the elemental stiffness matrix. Secondly, a rational substitution of cross-power spectrum between X or Y-direction and Z-direction is proposed, when the natural period was no greater than 4.5 times characteristic site period. Then, a practical response spectrum formulation was proposed based on random vibration theory and response spectrum theory. Lastly, all the calculation formula were used in a typical case -Tianjin Railway Station-II, and some comparisons among the results from the formula, time-history and some used multidimensional combinations, were done, which proved the practical method could be a reference for the design and analysis of the same kind of structure under seismic excitation.
XU Han-yong;YU Zhi-wu;.
A Practical Response Spectrum Method to Study the Behavior of a Novel High Speed Railway Station under Multiple Earthquake Excitation [J]. Journal of Vibration and Shock, 2013, 32(1): 113-117
PDF(1389 KB)
