【作者】 沈蒲生； 孟焕陵； 刘杨； 龚胡广；

【Author】 Shen Pushing, Meng Huanling, Liu Yang, Gong Huguang(College of Civil Engineering, Hunan university, Changsha 410082, China)

【机构】 湖南大学结构土木工程学院；

【摘要】 提出了一种新的钢筋混凝土巨型框架体系-空腹巨型框架结构体系。根据截面惯性矩相等的原则, 推导了钢筋混凝土空腹巨型框架等效截面高度系数以及材料用量比。以12层以及30层巨型框架为例,分别进行了静力弹性与pushover推覆分析,对比了钢筋混凝土实腹结构与空腹结构的位移、内力及周期、振型、以及出铰情况。结果表明,采用空腹巨型框架结构时,在保证结构承载力不变的情况下,可使侧移减小,抗侧刚度、侧移与内力趋于均匀,结构构件延性增大,有利于结构抗震,节省材料。更多还原

【Abstract】 A new reinforced concrete structural system namely hollow huge-frame structures is brought forward. The equivalent section height coefficient and the ratio of material dosage of the hollow mage-frame structures were deduced based on the equal section inertia. A twelve-floor and a thirty-floor huge-frame structures are analyzed by statics and pushover methods, and the free vibration period, the vibration model, the lateral displacement, and the internal force of hollow mage-frame structure are contrasted to those of solid huge-frame structure. It is shown that the free vibration period decreases, the structural rigidness increases, the lateral displacement decreases, and the rigidness, the lateral displacement and the internal force becomes even, and the material dosage decreases when the hollow huge-frame structures is used on the condition of the same carrying capacity.更多还原