水平双向地震作用下框排架结构的变形能力
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摘要
针对工业厂房中框排架结构偏心、不规则的特点,本文以某火力发电厂主厂房为原型,建立整体结构的空间计算模型,分别进行模态分析和水平双向地震作用下的弹塑性时程分析,重点研究了该类结构的动力特性及整体的变形能力。研究结果表明,结构纵、横向刚度相差较大,扭转效应明显,且薄弱部位较多,由于结构特殊的使用要求,可通过调整构件尺寸和位置来减小结构的扭转效应。
Because of the eccentricity and irregularity of the frame-bent structure in the industrial workshop,based on the prototype of thermal power plants principal workshop,the spatial computational model of integral structure was established.Model analysis and elastoplastic time history analysis under two-directional horizontal earthquake were made.The dynamic properties and the spatial deformation performance were studied on emphasis.The result shows that the stiffness of longitudinal direction and the transverse direction is abrupt,which makes the torsional effect evidently,and the weak parts are more.Because of the special productive demand,torsional effect is reduced by adjusting the dimension and position of structural members.
Because of the eccentricity and irregularity of the frame-bent structure in the industrial workshop,based on the prototype of thermal power plants principal workshop,the spatial computational model of integral structure was established.Model analysis and elastoplastic time history analysis under two-directional horizontal earthquake were made.The dynamic properties and the spatial deformation performance were studied on emphasis.The result shows that the stiffness of longitudinal direction and the transverse direction is abrupt,which makes the torsional effect evidently,and the weak parts are more.Because of the special productive demand,torsional effect is reduced by adjusting the dimension and position of structural members.
引文
[1]刘冬柏,王安玲.基于汶川地震房屋建筑破坏特征的几点启示[J].中外建筑,2008(9):21-26.
[2]吕西林,任晓崧,李翔,等.四川地震灾区房屋应急评估与震害初探[J].建筑学报,2008(7):1-4.
[3]白晓红,白国良.基于性能的抗震设计理论的研究现状及展望[J].河南科技大学学报:自然科学版,2005,26(6):74-77.
[4]Jeong S H,Elnashai A S.Analytical Assessment of an Irregular RC Frame for Full-scale3D Pseudo-dynamic Testing-partⅠ:Anslytical Model Verification[J].Journal of Earthquake Engineering,2005,9(1):95-128.
[5]白国良.大型火力发电厂钢筋混凝土框排架主厂房抗震性能试验研究报告[R].西安:西安建筑科技大学,2002.
[6]马兵,梁斌,甘信民,等.钢骨砼转换梁结构力学分析及设计计算综述[J].河南科技大学学报:自然科学版,2005,26(6):70-73.
[7]白晓红.钢筋混凝土框排架结构的平扭耦联多维地震反应分析[D].西安:西安建筑科技大学,2008.
[8]JGJ3—2002,高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002.
[9]GB50011—2001,建筑结构抗震设计规范[S].北京:中国建筑工业出版社,2008.
[2]吕西林,任晓崧,李翔,等.四川地震灾区房屋应急评估与震害初探[J].建筑学报,2008(7):1-4.
[3]白晓红,白国良.基于性能的抗震设计理论的研究现状及展望[J].河南科技大学学报:自然科学版,2005,26(6):74-77.
[4]Jeong S H,Elnashai A S.Analytical Assessment of an Irregular RC Frame for Full-scale3D Pseudo-dynamic Testing-partⅠ:Anslytical Model Verification[J].Journal of Earthquake Engineering,2005,9(1):95-128.
[5]白国良.大型火力发电厂钢筋混凝土框排架主厂房抗震性能试验研究报告[R].西安:西安建筑科技大学,2002.
[6]马兵,梁斌,甘信民,等.钢骨砼转换梁结构力学分析及设计计算综述[J].河南科技大学学报:自然科学版,2005,26(6):70-73.
[7]白晓红.钢筋混凝土框排架结构的平扭耦联多维地震反应分析[D].西安:西安建筑科技大学,2008.
[8]JGJ3—2002,高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002.
[9]GB50011—2001,建筑结构抗震设计规范[S].北京:中国建筑工业出版社,2008.
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