钢筋混凝土框架—斜撑结构体系抗震分析
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摘要
在各种钢筋混凝土结构体系中,框架结构是抗震性能比较差的一种,其主要原因是框架结构只有一道抗震防线。目前在混凝土框架结构中增加抗震防线的结构有混凝土框架—剪力墙结构和钢支撑—混凝土框架结构。在钢框架结构中增加抗震防线的结构有框架—中心支撑结构和框架—偏心支撑结构。本文吸取上述各种结构的优点,提出在混凝土框架结构中增加混凝土斜撑,由混凝土框架和混凝土斜撑组合成一种新的抗侧力结构体系:混凝土框架—斜撑结构。本文通过与同类结构的对比及试设计计算结果分析,来论证这种新的结构体系符合抗震规范对结构体系的各项要求,在抗震性能及经济适用等方面都具有一定的优越性,可以应用到实际工程中。
With only one line of fortification against to earthquake the frame structure performs poorly on the seismic behavior in all kinds of reinforced concrete structure systems.Nowadays,we add seismic fortification line to the frame structure,such as RC frame-shear wall structure and steel support-RC frame structure in RC frames,frame-center support structure and frame-eccentric support structure in steel frames.While drawing the advantages of the structures mentioned,this thesis suggests that the concrete inclined supports are added to the frame structure.Concrete frame together with concrete inclined supports make a new lateral-force resisting system——concrete frame-inclined support structure.According to the comparison with the same sort of structures and the calculation results analysis,this new structure system can meet the requirements of seismic code and can be used in practice for better seismic behavior and economic applicability.
With only one line of fortification against to earthquake the frame structure performs poorly on the seismic behavior in all kinds of reinforced concrete structure systems.Nowadays,we add seismic fortification line to the frame structure,such as RC frame-shear wall structure and steel support-RC frame structure in RC frames,frame-center support structure and frame-eccentric support structure in steel frames.While drawing the advantages of the structures mentioned,this thesis suggests that the concrete inclined supports are added to the frame structure.Concrete frame together with concrete inclined supports make a new lateral-force resisting system——concrete frame-inclined support structure.According to the comparison with the same sort of structures and the calculation results analysis,this new structure system can meet the requirements of seismic code and can be used in practice for better seismic behavior and economic applicability.
引文
[1]田志鹏,张新培,赵统.汶川地震中多层钢筋混凝土框架结构房屋震害分析[J].建筑结构,2009,39(11):67～71.
[2]叶列平,李易,潘鹏.漩口中学建筑震害调查分析[J].建筑结构,2009,39(11):54～57.
[3]王亚勇,张海明.国家标准《建筑抗震设计规范》(GB50011-2010)疑问解答(一)[J].建筑结构,2010,40(12):135～138.
[4]钱稼茹,柯长华.国家标准《建筑抗震设计规范》(GB50011-2010)疑问解答(四)[J].建筑结构,2011,41(3):123～126.
[5]林儆.提高房屋抗震性能的必要性及可能性[J].工程建设标准化,2011,(4):11～15.
[2]叶列平,李易,潘鹏.漩口中学建筑震害调查分析[J].建筑结构,2009,39(11):54～57.
[3]王亚勇,张海明.国家标准《建筑抗震设计规范》(GB50011-2010)疑问解答(一)[J].建筑结构,2010,40(12):135～138.
[4]钱稼茹,柯长华.国家标准《建筑抗震设计规范》(GB50011-2010)疑问解答(四)[J].建筑结构,2011,41(3):123～126.
[5]林儆.提高房屋抗震性能的必要性及可能性[J].工程建设标准化,2011,(4):11～15.
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