高温下具有弹性支座钢构件的动力稳定荷载
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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.
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.
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.
引文
[1]李国强,韩林梅,楼国彪,等.钢结构及钢-砼组合结构抗火设计[M].北京:中国建筑工业出版社,2006.
[2]李国强,吴波,韩林海.结构抗火研究进展与趋势[J].建筑钢结构进展,2006,8(1):1-13.
[3]魏东,孙秀山,刘应华,等.钢结构抗火研究进展[J].建筑钢结构进展,2006,8(4):17-22.
[4]孙强.高温环境下钢压杆受轴向动载时的稳定性[J].武汉理工大学学报,2006,28(6):62-65.
[5]栾茂田,孔德深,杨庆.层状土中单桩竖向简谐动力响应的简化解析方法[J].岩土力学,2005,26(3):375-380.
[6]Landesmann,Alexandre de M Batista,Eduardo.Implemen-tation of advanced analysis method for steel-framed struc-tures under fire conditions[J].Fire Safety Journal,2005,40(4):339-366.
[7]L Gardner,N R Baddoo.Fire testing and design of stainlesssteel structures[J].Journal of Constructional Steel Re-search,2006,62(6):532-543.
[8]郑文忠,张昊宇,胡琼.基于温度历程的高强钢丝应变及应力计算方法[J].建筑材料学报,2007,10(3):288-294.
[9]田建平,张丙强.桩土系数对基桩纵向振动影响的分析[J].岩土工程界,2008,11(8):64-67.
[10]Valdir Pignatta e Silva.Determination of the steel fire pro-tection material thickness by an analytical process—asimple derivation[J].Engineering Structures,2005,27(14):2036-2043.
[11]姚志坚,查晓熊,陈绍礼,等.用弹簧刚度模拟高温下组合材料受压、受弯屈服性能[C]//中国钢结构协会钢—混凝土组合结构分会第十次年会论文集,2005.
[12]郭志奇.关于带弹性支座结构体系的计算[J].天水师范学院院报,2008,23(5):45-46.
[13]苟兵旺.轴向压力影响下裂纹梁振动特性[J].机械设计与制造,2009,87(12):211-213.
[14]刘协权,倪新华.支座弹性对压杆临界荷载的影响[J].军械工程学院学报,2003,15(3):73-78.
[15]王秀丽,孙晓骥.地震作用下弦支穹顶结构动力稳定性参数分析[J].空间结构,2008,14(3):22-27.
[16]Ibrahim H Guzelbey,Ahmet Erklig.The efficiency of di-rect integration in elastic contact-impact problems[J].Acta Mechanica simica,2005,21(4):395-401.
[17]D Dinkler,J pontow.Amodel to evaluate dynamic stabilityof imperfection sensition shells[J].Computional Mecha-nies,2006,37(6):523-529.
[18]HM R Suy,R H B Fey.Nonlinea dynamic analysis of astructure with a friction-based seismic base isolation sys-tem[J].Nonlinear Dynamics,2007,50(3):523-538.
[2]李国强,吴波,韩林海.结构抗火研究进展与趋势[J].建筑钢结构进展,2006,8(1):1-13.
[3]魏东,孙秀山,刘应华,等.钢结构抗火研究进展[J].建筑钢结构进展,2006,8(4):17-22.
[4]孙强.高温环境下钢压杆受轴向动载时的稳定性[J].武汉理工大学学报,2006,28(6):62-65.
[5]栾茂田,孔德深,杨庆.层状土中单桩竖向简谐动力响应的简化解析方法[J].岩土力学,2005,26(3):375-380.
[6]Landesmann,Alexandre de M Batista,Eduardo.Implemen-tation of advanced analysis method for steel-framed struc-tures under fire conditions[J].Fire Safety Journal,2005,40(4):339-366.
[7]L Gardner,N R Baddoo.Fire testing and design of stainlesssteel structures[J].Journal of Constructional Steel Re-search,2006,62(6):532-543.
[8]郑文忠,张昊宇,胡琼.基于温度历程的高强钢丝应变及应力计算方法[J].建筑材料学报,2007,10(3):288-294.
[9]田建平,张丙强.桩土系数对基桩纵向振动影响的分析[J].岩土工程界,2008,11(8):64-67.
[10]Valdir Pignatta e Silva.Determination of the steel fire pro-tection material thickness by an analytical process—asimple derivation[J].Engineering Structures,2005,27(14):2036-2043.
[11]姚志坚,查晓熊,陈绍礼,等.用弹簧刚度模拟高温下组合材料受压、受弯屈服性能[C]//中国钢结构协会钢—混凝土组合结构分会第十次年会论文集,2005.
[12]郭志奇.关于带弹性支座结构体系的计算[J].天水师范学院院报,2008,23(5):45-46.
[13]苟兵旺.轴向压力影响下裂纹梁振动特性[J].机械设计与制造,2009,87(12):211-213.
[14]刘协权,倪新华.支座弹性对压杆临界荷载的影响[J].军械工程学院学报,2003,15(3):73-78.
[15]王秀丽,孙晓骥.地震作用下弦支穹顶结构动力稳定性参数分析[J].空间结构,2008,14(3):22-27.
[16]Ibrahim H Guzelbey,Ahmet Erklig.The efficiency of di-rect integration in elastic contact-impact problems[J].Acta Mechanica simica,2005,21(4):395-401.
[17]D Dinkler,J pontow.Amodel to evaluate dynamic stabilityof imperfection sensition shells[J].Computional Mecha-nies,2006,37(6):523-529.
[18]HM R Suy,R H B Fey.Nonlinea dynamic analysis of astructure with a friction-based seismic base isolation sys-tem[J].Nonlinear Dynamics,2007,50(3):523-538.
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