核芯筒厚度对钢-混凝土混合结构抗震性能的影响

目的为了分析核芯筒厚度对结构抗震性能的影响.方法利用同济大学MTS多高层钢结构设计系统,根据钢-混凝土混合结构抗震概念设计原理,采用沈阳地区经济效益较好的住宅平面布置形式,建立H型钢框架-混凝土核芯筒多层住宅结构模型,并计算模型在四类场地土和设防烈度为七、八、九度时的最大层间位移及顶部最大位移.结果绘出了模型的最大层间位移及顶部最大位移随核芯筒厚度变化的曲线.结论提出了混合结构的高宽比最好不大于相应混凝土结构的高宽比限值;最大层间位移和顶部最大位移在小震作用的弹性阶段取混凝土结构的限值等建议.得出了在七度区和八度区一类场地土条件下,合理布置混凝土核芯筒可以充分发挥其抗侧刚度,能够很好地控制结构的位移和变形等结论.

Effects of Thickness of Hull Core on the Seismic Ability of Steel - concrete Hybrid Structure

In order to analyze the seismic ability of steel-concrete hybrid structure,based on the theory of concept design of steel-concrete hybrid structure and with the help of the MTS system of Tongji University,this paper sets up a model of H pattern steel frame-hull core structure by using the economic residential building designed in Shenyang area.The seismic ability of this kind of structure for multi-story residential building in different ground soil and different earthquake condition is investigated.The thickness of the hull core is studied,and some useful advice about the stiffness and displacement of the structure is given and some valuable results about the disposal of the hull core are obtained.