摘要
以设防烈度为8度的某多层钢筋混凝土框架办公楼设计为工程背景,针对纯框架考虑楼板影响和同时考虑楼板与填充墙影响等三种情况,分别进行Pushover分析,结果表明在进行钢筋混凝土框架结构的抗震设计时,必须适当考虑现浇板与填充墙的影响;通过改变柱端弯矩增大系数的取值,研究二级钢筋混凝土框架的弯矩增大系数的合理取值,表明我国2010年规范对二级框架结构的柱端弯矩增大系数偏小,该值在1.85及以上时,能更好地实现延性框架结构设计。
A high office building of steel reinforced concrete frame structure with 8-magnitudefortified intensity was taken as an example to carried out Pushover analysis under three different conditions, including pure frame structure, frame structure under floor slab influence, and frame structure under influence of floor slab and filling wall. It was found that the influence of cast-in-place slab and filling wall must be considered appropriately during seismic design of steel reinforced concrete frame structure. The value of magnification coefficient of bending moment at pile end was changed to study the reasonable value of bending moment magnification coefficient of class-II frame structure. The magnification coefficient of bending moment at pile end specified in domestic code in 2010 is relatively small, and better ductile frame structure could be designed when its value is 1.85 or higher.
出处
《建筑技术》
北大核心
2016年第5期392-395,共4页
Architecture Technology
基金
国家自然科学基金(51278218/E080801)
关键词
钢筋混凝土框架
PUSHOVER分析
抗震性能
柱弯矩增大系数
steel reinforced concrete frame
Pushover analysis
seismic performance
column bending moment magnification coefficient
