填充墙刚度系数对框架结构抗震性能的研究
|
摘要
通过建立三维有限元模型,采用ANSYS10.0软件进行静力分析,分别对不开洞填充墙和开洞填充墙中相关系数分析发现,随着墙体宽高比的增加,模型的相对刚度也在逐渐增长,但增长速度逐渐减慢,当填充墙宽高比大于1.5时,宽高比的增大对框架抗侧刚度的增大影响不大,当填充墙宽高比大于1.8时,可忽略墙体宽高比增大对框架抗侧刚度的影响.研究发现,梁柱惯性矩之比对于模型的相对刚度影响很大,框架结构的相对刚度随梁柱惯性矩之比(I2/I1)的增加而减小.
Statical analysis of infilled frame structure was conducted based on 3D finite element models by means of software ANSYS10.0.Analyses on relevant parameters of infilled frame walls with or without openings have been carried out seperately,and it is found that the relevant stiffness of the model gradually increases with the ratio of the wall's width to its height.However,the effect of the width to height ratio of the wall on its structural lateral stiffness becomes much smaller when the value of the width to height ratio is larger than 1.5.The effect can be basically ignored when the width to height ratio is larger than 1.8.It is investigated that the ratio of posts inertia moment to beams has great influence on model's relevant stiffness.The relevant stiffness of frame structure decreases with the growth of the ratio of posts inertia moment to beams(I2/I1).
Statical analysis of infilled frame structure was conducted based on 3D finite element models by means of software ANSYS10.0.Analyses on relevant parameters of infilled frame walls with or without openings have been carried out seperately,and it is found that the relevant stiffness of the model gradually increases with the ratio of the wall's width to its height.However,the effect of the width to height ratio of the wall on its structural lateral stiffness becomes much smaller when the value of the width to height ratio is larger than 1.5.The effect can be basically ignored when the width to height ratio is larger than 1.8.It is investigated that the ratio of posts inertia moment to beams has great influence on model's relevant stiffness.The relevant stiffness of frame structure decreases with the growth of the ratio of posts inertia moment to beams(I2/I1).
引文
[1]中华人民共和国建设部.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.
[2]肖伦斌.汶川地震框架填充墙的震害现象及分析[J].四川建筑科学研究,2009,35(5):162-164.
[3]KHAN M A,EKRAMUL H.A rationale for determining thenatural period of RC building frames having infill[J].Engi-neering Structures,2006,28:495-502.
[4]龙慎久.考虑框——墙相互作用的填充墙框架结构力学性能研究[D].南京航空航天大学,2010.
[5]潘毅,杨琼,林拥军,等.汶川地震中填充墙对钢筋混凝土框架结构抗震性能的影响及分析[J].四川建筑科学研究,2010,36(5):141-1444.
[6]MOHAMMAD A,ALI M M.Analysis of masonry infilledstell frames with seismic isolaro subframes[J].EngineeringStructures,2006,27:485-500.
[2]肖伦斌.汶川地震框架填充墙的震害现象及分析[J].四川建筑科学研究,2009,35(5):162-164.
[3]KHAN M A,EKRAMUL H.A rationale for determining thenatural period of RC building frames having infill[J].Engi-neering Structures,2006,28:495-502.
[4]龙慎久.考虑框——墙相互作用的填充墙框架结构力学性能研究[D].南京航空航天大学,2010.
[5]潘毅,杨琼,林拥军,等.汶川地震中填充墙对钢筋混凝土框架结构抗震性能的影响及分析[J].四川建筑科学研究,2010,36(5):141-1444.
[6]MOHAMMAD A,ALI M M.Analysis of masonry infilledstell frames with seismic isolaro subframes[J].EngineeringStructures,2006,27:485-500.
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