双连梁受力性能研究
|
摘要
通过ETABS软件分别建立设有单根普通连梁和双连梁的简化的联肢剪力墙结构模型,并在结构顶点施加水平荷载,研究双连梁与普通单连梁在水平荷载作用下的受力性能。分析双连梁的最大剪力、最大弯矩、顶点最大位移和自振周期等特性,及其随连梁跨高比、上下连梁间距变化的规律,并与单连梁进行对比研究。经分析发现,相同荷载作用下,双连梁内力较单连梁小;随着跨高比增大,双连梁与普通连梁最大剪力、最大弯矩的比值逐渐减小。算例表明,当跨高比为2.5时,双连梁的最大弯矩、最大剪力约分别为单连梁的64%,64%,双连梁模型结构顶点的最大位移比单连梁增加25%左右,双连梁模型的自振周期比普通连梁略小。跨高比一定时,随着双连梁上下梁间距的增加,上下梁的内力有较小的变化。分析结果表明采用双连梁方案能够很好地降低连梁的内力,双连梁在改善高层建筑受力性能中会有优良的作用,是一种很好的连梁方案。
Simplified structural models of coupled walls with single common coupling beam and dual coupling beams were established respectively by means of ETABS.Horizontal forces were applied on the summit point of the structure,and the mechanical behavior,such as the maximum shear force,maximum bending moment,maximum displacement of summit structure and the natural vibration period of dual coupling beams were studied with the variation of the span to height ratio and the space between the upper beam and lower beam.And the mechanical behaviors of these two kind of beams were compared.It was found that the maximum bending moment and shear force of the dual beam is much smaller than common single beam,and the ratio of maximum shear force and bending moment of dual coupling beam to single coupling beam reduce with the increase of span to height ratio.In the example,the ratio is 64% and 64% as the span to height ratio is 2.5,the maximum displacement of summit structure of the dual beam is 1.25 times of the single beam,and the former has slightly smaller period.When the span to ratio is constant,the force of upper and lower beam varies little with the increase of distance between them.The analysis results show that the form of dual coupling beam plan can reduce the internal forces of coupling beams,it can play very useful effect in improving the mechanical behavior of high-rise buildings,and is a very good form of coupling beam.
Simplified structural models of coupled walls with single common coupling beam and dual coupling beams were established respectively by means of ETABS.Horizontal forces were applied on the summit point of the structure,and the mechanical behavior,such as the maximum shear force,maximum bending moment,maximum displacement of summit structure and the natural vibration period of dual coupling beams were studied with the variation of the span to height ratio and the space between the upper beam and lower beam.And the mechanical behaviors of these two kind of beams were compared.It was found that the maximum bending moment and shear force of the dual beam is much smaller than common single beam,and the ratio of maximum shear force and bending moment of dual coupling beam to single coupling beam reduce with the increase of span to height ratio.In the example,the ratio is 64% and 64% as the span to height ratio is 2.5,the maximum displacement of summit structure of the dual beam is 1.25 times of the single beam,and the former has slightly smaller period.When the span to ratio is constant,the force of upper and lower beam varies little with the increase of distance between them.The analysis results show that the form of dual coupling beam plan can reduce the internal forces of coupling beams,it can play very useful effect in improving the mechanical behavior of high-rise buildings,and is a very good form of coupling beam.
引文
[1]刘岩,邓志恒,谭宇胜.几种连梁结构体系的比较研究[J].混凝土与水泥制品,2007(1):57-60.Liu Y,Deng Z H.Comparative study of severalcoupling beam system[J].China Concrete and CementProducts,2007(1):57-60.(in Chinese)
[2]唐莹莹,阎奇武.联肢剪力墙的一种新型连梁[J].科技情报开发与经济,2007,17(3):164-166.Tang Y Y,Yan Q W.A new type of coupling beam inthe coupled shear wall[J].Sci-tech InformationDevelopment&Economy,2007,17(3):164-166.(inChinese)
[3]曹征良,丁大钧,程文壤.剪力墙结构自控连梁的试验研究[J].东南大学学报,1991,21(4):45-51.Cao Z L,Ding D J,Cheng W Y.Experimental researchon self-control coupling beams in shear walls[J].Journal of Southeast University,1991,21(4):45-51.(in Chinese)
[4]朱炳寅.对“双连梁”的认识与设计建议[J].建筑结构技术通讯,2008.Zhu B Y.suggestions and recommendations for doublecoupling beams[J].Building structure.TechnicalNewsletter,2008.(in Chinese)
[5]北京金土木软件技术有限公司,中国建筑标准研究院.ETABS中文版使用指南[M].北京:中国建筑工业出版社,2004.Civil king software technology Co.,Ltd,Chinaarchitecture design&research group.User guide forETABS chinese version[M].Beijing:ChinaArchitecture&Building Press,2004.(in Chinese)
[6]李奎明,孙春毅,李杰.高性能混凝土双连梁短肢剪力墙试验研究[J].地震工程与工程振动,2006,26(3):121-123.Li K M,Sun C Y,Li J.Experimental study on HPCshort-leg shear wall with a pair of beams[J].Journal ofEarthquake Engineering and Engineering Vibration,2006,26(3):121-123.(in Chinese)
[7]季静,韩小雷,郑宜,等.高层建筑楼层侧向刚度变化控制准则的研究[J].结构工程师,2006,22(5):11-15.Ji J,Han X L,Zheng Z.Research on irregularitycriterion of storey lateral stiffness of tall buildingstructures[J].structure Engineers,2006,22(5):11-15.(in Chinese)
[2]唐莹莹,阎奇武.联肢剪力墙的一种新型连梁[J].科技情报开发与经济,2007,17(3):164-166.Tang Y Y,Yan Q W.A new type of coupling beam inthe coupled shear wall[J].Sci-tech InformationDevelopment&Economy,2007,17(3):164-166.(inChinese)
[3]曹征良,丁大钧,程文壤.剪力墙结构自控连梁的试验研究[J].东南大学学报,1991,21(4):45-51.Cao Z L,Ding D J,Cheng W Y.Experimental researchon self-control coupling beams in shear walls[J].Journal of Southeast University,1991,21(4):45-51.(in Chinese)
[4]朱炳寅.对“双连梁”的认识与设计建议[J].建筑结构技术通讯,2008.Zhu B Y.suggestions and recommendations for doublecoupling beams[J].Building structure.TechnicalNewsletter,2008.(in Chinese)
[5]北京金土木软件技术有限公司,中国建筑标准研究院.ETABS中文版使用指南[M].北京:中国建筑工业出版社,2004.Civil king software technology Co.,Ltd,Chinaarchitecture design&research group.User guide forETABS chinese version[M].Beijing:ChinaArchitecture&Building Press,2004.(in Chinese)
[6]李奎明,孙春毅,李杰.高性能混凝土双连梁短肢剪力墙试验研究[J].地震工程与工程振动,2006,26(3):121-123.Li K M,Sun C Y,Li J.Experimental study on HPCshort-leg shear wall with a pair of beams[J].Journal ofEarthquake Engineering and Engineering Vibration,2006,26(3):121-123.(in Chinese)
[7]季静,韩小雷,郑宜,等.高层建筑楼层侧向刚度变化控制准则的研究[J].结构工程师,2006,22(5):11-15.Ji J,Han X L,Zheng Z.Research on irregularitycriterion of storey lateral stiffness of tall buildingstructures[J].structure Engineers,2006,22(5):11-15.(in Chinese)
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