框支密肋壁板结构转换层刚度比的合理取值
摘要
框支密肋壁板结构在城市建设中应用前景广泛,确定合理的转换层侧移刚度比能使结构在地震作用下弹性层间位移反应均匀并减少弹塑性变形集中,从而提高结构的抗震性能.提出框支-复合弹性板力学模型,用于计算整体结构在弹性阶段的内力和变形情况;应用该模型对一7层的框支密肋壁板结构结构进行弹性动力反应分析,探讨了转换层上、下刚度比对框支密肋壁板结构侧移的影响,并提出了框支密肋壁板结构转换层刚度比的合理取值.计算结果表明:在8度区框支壁板结构的第2层与底层的侧移刚度比宜控制在0.9～1.7之间,最优刚度比为1.3.
In urban constructions,the application perspective of frame-supported multi-ribbed slab structure is widely spread.The rational ratio of lateral stiffness for frame-supported multi-ribbed slab structure in transfer stories leading to the elastic relative displacement uniformity and the decrease of elastic-plastic deformation was put forward in this article in order to improve the seismic performance of this structure.Frame-supported elastic composite slab mechanical model is established in this paper to calculate the internal force and deformation of this structure in elastic stage.With a case study on a 7 story Frame-supported multi-ribbed slab structure,elastic seismic response was analyzed through this model.The influence on displacement which was due to the ratio of lateral stiffness in transfer stories was discussed.What's more,the rational ratio of lateral stiffness for frame-supported multi-ribbed slab structure in transfer stories was well defined.In the end,the calculation results of this study indicates that the rational range of ratio of lateral stiffness for frame-supported multi-ribbed slab structure in transfer stories of Intensity 8 is 0.9~1.7 and the excellent ratio is 1.3.
In urban constructions,the application perspective of frame-supported multi-ribbed slab structure is widely spread.The rational ratio of lateral stiffness for frame-supported multi-ribbed slab structure in transfer stories leading to the elastic relative displacement uniformity and the decrease of elastic-plastic deformation was put forward in this article in order to improve the seismic performance of this structure.Frame-supported elastic composite slab mechanical model is established in this paper to calculate the internal force and deformation of this structure in elastic stage.With a case study on a 7 story Frame-supported multi-ribbed slab structure,elastic seismic response was analyzed through this model.The influence on displacement which was due to the ratio of lateral stiffness in transfer stories was discussed.What's more,the rational ratio of lateral stiffness for frame-supported multi-ribbed slab structure in transfer stories was well defined.In the end,the calculation results of this study indicates that the rational range of ratio of lateral stiffness for frame-supported multi-ribbed slab structure in transfer stories of Intensity 8 is 0.9~1.7 and the excellent ratio is 1.3.
引文
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[8]杨佑发,许绍乾,邹银生.底部框剪-组合墙多层房屋抗震变形分析[J].世界地震工程,2000,16(4):101-105.YANG You-fa,XUShao-qian,ZOU Yin-sheng.Analysis of seismic deformation of Bottomframe shear-Tier Build-ing of Composite Wall[J].World Information On Earthquake Engineering,2000,16(4):101-105.
[2]YAO Qian-feng.Study on Thermal-insulating and Link details of a newenergy-saving composite wall structure[J].Journal of Harbin Institute of Technology(New Series).2007,14(s):435-438.
[3]黄炜.密肋复合墙体在拟动力试验下的抗震性能研究[J].振动与冲击,2007(3):49-54.HUANG Wei.Study on aseismic performance of a multi-ribbed composite wall under pseudo-dynamic test[J].Vi-bration and Shock,2007(3):49-54.
[4]高小旺.底层框架抗震墙砖房第二层与底层侧移刚度比的合理取值[J].工程抗震,1998(3):19-23.GAO Xiao-wang.Rational Option of Lateral Stiffness Ratio of the second to bottomStoryin Masonry Building with Stories Frame and Shear Wall at the Bottom[J].Earthquake Resistant Engineering,1998(3):19-23.
[5]黄炜,姚谦峰.新型复合墙体弹性抗侧刚度计算分析[J].工程抗震,2005(2):1-7.HUANG Wei,YAO Qian-feng.Calculation Analysis on New Type Composite Wall Elastic Lateral Rigidity[J].Earthquake Resistant Engineering,2005(2):1-7.
[6]HUANG Wei.Study on a new energy-saving composite wall[J].Journal of Harbin Institute of Technology(New Series).,2007,14(s):442-446.
[7]黄勤勇,吕西林.转换层上、下刚度比对框支剪力墙结构抗震性能的影响[J].结构工程师,2003(1):17-23.HUANG Qin-yong,L Xi-lin.The Effect of Ratio of Stiffness on Seismic Behavior ofShear Wall Structure with Supporting Frames[J].Structural Engineers,2003:17-23.
[8]杨佑发,许绍乾,邹银生.底部框剪-组合墙多层房屋抗震变形分析[J].世界地震工程,2000,16(4):101-105.YANG You-fa,XUShao-qian,ZOU Yin-sheng.Analysis of seismic deformation of Bottomframe shear-Tier Build-ing of Composite Wall[J].World Information On Earthquake Engineering,2000,16(4):101-105.
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