Seismic analysis of series isolation system based on geometry nonlinearity

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Lin, Z.D.^1 ; Shi, H.^1 ; Xue, L.^1

City Institute, Dalian Univ. of Tech., Dalian, China^1

关键词: Cantilever columns;    Differential quadrature element method;    Far-field ground motion;    Geometric non-linear;    Governing equations;    Hamilton's principle;    Isolation systems;    Slenderness ratios;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012144/pdf
DOI  :  10.1088/1755-1315/81/1/012144

来源: IOP

【 摘 要 】

According to the system of rubber bearing serially connected with column, the mathematical model of serially isolated system based on geometric nonlinear is investigated by using Hamilton's principle. The effects of axial pressure and difference column size to the series isolation system in seismic response is discussed. The series isolation system dynamics model based on geometric nonlinear is established considering the cross section rotated and the influence of the shear deformation and axial pressure. The differential quadrature element method is employed for discrete processing on governing equations and boundary conditions. Seismic response of series isolation system subjected to the far-field ground motions is solved numerically. Results show that: the slenderness ratio of cantilever column will significantly affect the seismic response of the isolation system under far-field ground motions, and it is particularly to response of the cantilever column.