【作者】 潘颖； 陈建斌；

【Author】 PAN Ying~1 CHEN Jian-bin~2 (1.Shanghai University of Engineering Science,Shanghai 200336,China; 2.Architectural Design & Research Institute of Tongji University,Shanghai 200092,China)

【机构】 上海工程技术大学基础部力学教研室； 同济大学建筑设计研究院；

【摘要】 基于钢管混凝土统一理论,提出了简化的三线型随动强化恢复力模型,它考虑了钢管和混凝土之间的约束效应.根据这一模型,对不同截面和钢管壁厚的柱,可以生成相应的新材料,这些材料具有新的密度、屈服强度和极限强度,同时具有与原型柱相同的轴向刚度和抗弯刚度.将其应用干某实际方钢管混凝土高层建筑工程中,进行了模态分析、反应谱分析和时程分析,得到了结构的自振周期、楼层位移和剪力时程等结果,掌握了结构的抗震性能并提出了相应补强措施.将这些结果与 SATWE 和 ETABS 软件计算结果对比,表明该方法是可信的.相关研究结论可供今后类似工程设计参考.更多还原

【Abstract】 Based on CFST united design theory,the simplified trilinear kinematic hardening hysteretic model was presented,which can take account of the reciprocal effects between the steel tube and the filled concrete. According to this model,the new material,which had the same axial and flexural rigidity as prototype col- umns,new density,yield strength,and ultimate strength,can be produced for different section and wall thickness steel tube columns.This model was applied in an actual complex CFST tall building and the modal analysis,response spectrum analysis and time-history analysis were completed.The free vibration period, story drift and shearing force of the building were obtained;protective measures were given in order to improve the seismic performance.These results were reliable compared with those of SATWE and ETABS software. Relative conclusions can be referenced by similar projects.更多还原