【摘要】 根据弹性稳定理论原理研究了弹性支座钢构件在高温环境下的动力特性问题,导出了高温下杆件的动力稳定临界荷载计算式,并讨论了保护层厚度、长细比、阻尼、材料特性等因素对杆件动力稳定临界荷载的影响,探讨了在实际工程中如何减小结构失稳的问题,可为钢结构抗火设计提供参考.更多还原

【Abstract】 The problems of dynamic character of steel structure members under the fire state are studied by the elasticity stability theory.The calculating formulas for critical load of dynamic stability of steel structure members in fire conditions are conducted,and the effects of insulation thickness,ratio of length and thin,damping,material character,etc.on the critical load are studied.How to reduce the structural instability of members in practical projects are discussed.It is hoped that these may prove to be some value in steel structure resist fire design.更多还原