摘要
以箱形截面钢桥墩作为数值分析对象,分别使用修正双曲面模型、等向强化模型和随动强化模型预测钢桥墩在正负交替荷载作用下的滞回性能;并通过计算与试验结果的对比,探讨了这3种钢材本构模型的各自预测精度和适用范围。结果表明:修正双曲面模型能预测箱形薄壁截面和箱形厚壁截面钢桥墩的滞回性能;等向强化模型和随动强化模型仅适用于预测箱形稍薄截面钢桥墩的滞回性能,对于箱形厚壁截面钢桥墩,其预测结果则不够理想。
Regarded steel bridge p modified two curved-surface mod model, the hysteretic behaviors of analyzed. The calculated results ers with box sections as numerical ana el, the isotropic hardening model and lysis object, using a kinematic hardening steel bridge piers under positive and negative cyclic load were and test results were compared. Predictive precision and applicable range were discussed respectively. Results show that the modified two curved-surface model can accurately predict the hysteretic behavior of steel bridge piers with either thin-walled or thick-walled sections, while the isotropic hardening and kinematic hardening models may be applicable to steel bridge piers with relatively thin-walled sections but may be not adequate to those with thick-walled sections.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2008年第6期69-75,113,共8页
China Journal of Highway and Transport
关键词
桥梁工程
钢桥墩
数值分析
交替荷载
修正双曲面模型
等向强化模型
随动强化模型
bridge engineering
steel bridge pier
numerical analysis
cyclic load
modified twocurved-surface model
isotropic hardening model
kinematic hardening model
