型钢混凝土框排架结构主厂房拟动力实验研究
|
摘要
针对高烈度区大容量火电厂主厂房不适于应用钢筋混凝土框排架结构和钢支撑钢排架结构的情况,提出了采用新型型钢混凝土框排架混合结构体系。以1000MW机组电厂主厂房为原型,按1/7进行缩尺的3跨3榀框排架子结构进行空间模型的拟动力试验,研究了在水平地震作用下模型结构的裂缝发展规律及破坏机制、结构的滞回特性及变形性能、框排架结构协同工作性能等。研究结果表明:在地震加速度0.1g地震波作用下结构满足"小震不坏"的要求,在0.4g时满足"大震不倒"的要求;结构弹塑性层间位移角限值为1/95;排架结构的设计剪力应不小于整体结构7%的基底总剪力等。
A new type of section steel concrete frame-bent hybrid structure is applied to a large capacity power plant in high intensity seismic region for replacing RC frame-bent structure and steel-bracing-steel-bent structure.The pseudo-dynamic test of a 1/7 scale model with two spans and three bays has been performed based on the prototype structure of main building in 1000MW power plant.The studied contents include developing law of crack,damage mechanism,hysteretic characteristic,deformation property and coordinated working performance of the structure under horizontal earthquakes.Experimental results show that the structure does not crack under 0.1g earthquake acceleration,and does not collapse under 0.4g acceleration ground motion input;the most elastic-plastic story drift angle is 1/95;the design shear of the bent structure should not be less than 7% of the total base shear.
A new type of section steel concrete frame-bent hybrid structure is applied to a large capacity power plant in high intensity seismic region for replacing RC frame-bent structure and steel-bracing-steel-bent structure.The pseudo-dynamic test of a 1/7 scale model with two spans and three bays has been performed based on the prototype structure of main building in 1000MW power plant.The studied contents include developing law of crack,damage mechanism,hysteretic characteristic,deformation property and coordinated working performance of the structure under horizontal earthquakes.Experimental results show that the structure does not crack under 0.1g earthquake acceleration,and does not collapse under 0.4g acceleration ground motion input;the most elastic-plastic story drift angle is 1/95;the design shear of the bent structure should not be less than 7% of the total base shear.
引文
[1]吴涛,白国良,刘伯权.大型火力火电厂钢筋混凝土横向框排架主厂房动力特性实验研究[J].世界地震工程,2004,20(4):157-160.
[2]姚谦峰,陈平.土木工程结构试验[M].北京:中国建筑工业出版社,2001.
[3]郑山锁.动力试验模型在任意配重条件下与原型结构的相似关系[J].工业建筑,2000,30(3):35-39.
[4]黄维平,邬瑞峰,张前国.配重不足时的动力模型试验与原型相似关系问题的探讨[J].地震工程与工程振动,1994,14(14):14-20.
[5]GB50011-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[6]Kabeyaswa T,Shiohara H,Otani S.Analysis of the full-scale seven-story reinforced concrete test structure[J].Journal of the Faculty of Engineer-ing,1983,37(2):431-478.
[2]姚谦峰,陈平.土木工程结构试验[M].北京:中国建筑工业出版社,2001.
[3]郑山锁.动力试验模型在任意配重条件下与原型结构的相似关系[J].工业建筑,2000,30(3):35-39.
[4]黄维平,邬瑞峰,张前国.配重不足时的动力模型试验与原型相似关系问题的探讨[J].地震工程与工程振动,1994,14(14):14-20.
[5]GB50011-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[6]Kabeyaswa T,Shiohara H,Otani S.Analysis of the full-scale seven-story reinforced concrete test structure[J].Journal of the Faculty of Engineer-ing,1983,37(2):431-478.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心