框架-核心筒结构耗能减震层的减震效果分析
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摘要
本文提出了耗能减震层的概念,对比分析了在地震作用下普通框筒结构、带加强层的框筒结构和带耗能减震层的框筒结构的抗震性能和构件的内力变化。计算结果表明,在对结构位移控制效果接近的情况下,采用加强层的结构不仅增大了基底剪力和弯矩,而且框架柱的内力在加强层附近产生突变,而采用耗能减震层能有效地减小这些变化,与前者相比,大大提高了结构的抗震性能。
In this paper,the concept of energy-dissipation story is presented.Comparisons on the seismic performances and internal force variety of members in frame-core wall structure,frame-core wall structure with strengthened stories,frame-core wall structure with energy-dissipation stories under earthquake are analyzed.It is shown that the base shear force and moment increase in frame-core wall structure with strengthened stories,and the internal force of frame column change suddenly nearby the strengthened stories.However,the base shear force and moment and the internal forces decrease in frame-core wall structure with energy-dissipation stories under the condition of the same displacement.So the seismic performance of the latter is better than the former.
In this paper,the concept of energy-dissipation story is presented.Comparisons on the seismic performances and internal force variety of members in frame-core wall structure,frame-core wall structure with strengthened stories,frame-core wall structure with energy-dissipation stories under earthquake are analyzed.It is shown that the base shear force and moment increase in frame-core wall structure with strengthened stories,and the internal force of frame column change suddenly nearby the strengthened stories.However,the base shear force and moment and the internal forces decrease in frame-core wall structure with energy-dissipation stories under the condition of the same displacement.So the seismic performance of the latter is better than the former.
引文
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[2]傅学怡.带刚性加强层R.C.高层建筑结构设计建议[J].建筑结构,1999,29(10):44~47
[3]唐兴荣.特殊和复杂高层建筑结构设计[M].北京:机械工业出版社,2006
[4]徐培福.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005
[5]阮永辉,吕西林.带水平加强层的超高层结构的力学性能分析[J].结构工程师,2000,(4):12~16
[6]易方民,高小旺,等.水平加强层在超高层钢结构中的应用研究[J].建筑科学,2001,17(1):15~20
[7]黄怡,王元清,等.水平加强层对超高层钢框架-支撑结构的影响[J].重庆建筑大学学报,2005,27(3):49~56
[8]沈国庆,陈宏,等.具有水平加强层高层钢结构的动力特性及抗震性能分析[J].工程抗震与加固改造,2006,28(3):7~11
[9]周福霖.工程结构减震控制[M].北京:地震出版社,1997
[10]廖宇飚,黄小坤.高层建筑结构侧向刚度变化及其控制方法研究(Ⅰ)[J].工程抗震与加固改造,2005,27(5):20~25
[11]周云.粘弹性阻尼减震结构设计[M].武汉:武汉理工大学出版社,2006
[12]Soong T T,Dargush G F.Passive Energy DissipationSystems in Structural Engineering[M].State University ofNewYork at Buffalo,USA,1997
[13]Constantinou M C,Soong T T,Dargush G F.PassiveEnergy Disspation Systems For Structural Design and Retrofit[J].Monograph.Multidisciplinary Center for EarthquakeEngineering Research.University at Buffalo,New York,1998
[14]欧进萍,吴斌,龙旭.结构被动耗能减震效果的参数影响[J].地震工程与工程振动,1998,18(1):60~70