Study on the Effect of P-ΔEffects on Seismic Response of Base Isolation Structure
JIN Jianmin
CHEN Peng
TAN Ping
HUANG Xiangyun
LIU Yanhui
Abstract：Horizontal deformation of isolation bearings in the earthquake action produces additional moment on the upper structure of base isolated structure, which is caused by P-Δ effects of isolation bearings. In China, there are relatively few researches on the influence of P-Δeffects of isolation bearings on the seismic response of base isolated structure. Using PERFROM-3D software, a base isolation structure model considering plasticity of the upper structure is established to be analyze. Considering and unconsidering P-Δ effects of isolation bearings, seismic response of base isolated structure are compared, such as acceleration, storey drift, storey shear, storey overturning moment, etc. The results show that the storey drift of bottom layer and the bottom rotation displacement of the upper structure are affected by P-Δ effects of isolation bearing and other seismic response almost have no difference.
Keywords：P-ΔeffectsIsolation bearingBase isolation structureEarthquake response
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 58-64 )