横桥向地震作用对钢拱桥地震损伤发展的影响

诸葛翰卿,谢旭,廖燕华,唐站站

Effect of transverse earthquake action on development of seismic damage of steel arch bridges

Han-qing ZHUGE,Xu XIE,Yan-hua LIAO,Zhan-zhan TANG

表 1 Q345qC钢材的修正双曲面模型主要参数[20]

Tab.1 Main parameters of modified two surface model for Q345qC steel[20]

$E_{\rm st}^{\rm P}$/GPa $\varepsilon _{\rm st}^{\rm P}$ M $E_{0i}^{\rm P}$/GPa ω/MPa−1 ${\overline \kappa _0}$/MPa σu/MPa 4.47 1.53×10−2 −0.142 1.43 1.61×10−2 412.2 636.4 ζ e f0/GPa a b c α 307.4 470 0.53 −0.358 21.4 1.03 0.343