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钢－混凝土组合框架柱的稳定设计方法

期刊名称：建筑科学与工程学报, 2008, 25(3): 12~16
时间：0
分类：TD[矿业工程]
作者机构：[1]School of Civil and Architectural Engineering, Central South University, Changsha 410075, China
相关基金：Foundation item： Project（50778177） supported by the National Natural Science Foundation of China; Project（07JJ1009） supported by the Outstanding Younger Fund of Hunan Province, China
相关项目：新型钢－混凝土组合结构体系研究

关键词：合成框架, 接口滑倒, 半硬的关节, 动态特征, 砍的僵硬, 旋转僵硬, 地震反应, composite frame, interface slip, semi-rigid joint, dynamic characteristic, shearing stiffness, rotation stiffness, seismicresponse

中文摘要：

就接口而言的半坚硬地连接的合成横梁的僵硬矩阵滑倒被建立，为合成框架的有弹性的地震反应的计算方法被导出。相应计算程序被开发。介绍与砍的接头有关是僵硬和联合旋转僵硬的无尺寸的数量，接口的影响滑倒并且合成框架上的半硬的关节被转移到量的参数分析，综合地考虑生气部分性质，材料和合成横梁的线性僵硬。基于计算节目，免费颤动频率和半硬的联合钢水泥的地震回答合成框架考虑接口滑倒被计算。接口的影响滑倒并且半动态特征和地震反应上的僵硬关节被分析，地震设计忠告被介绍。结果证明接口滑动减少免费颤动频率和增加合成框架的地震回答。半硬的关节减少免费颤动频率并且与僵硬关节相比增加合成框架的地震回答。随联合旋转僵硬的增加，合成框架的有弹性的地震回答第一增加然后减少。效果与到合成横梁的线性僵硬的联合旋转僵硬的比率有关。

英文摘要：

The stiffness matrix of semi-rigidly connected composite beams considering interface slip was established and the calculation method for elastic seismic response of composite frame was derived. The corresponding calculation programs were developed. Introducing the dimensionless quantities that were related to the connector shearing stiffness and the joint rotation stiffness, the influences of interface slip and semi-rigid joint on composite frame were transferred to quantitative parameter analysis, taking account of cross sectional properties, materials and linear stiffness of composite beam synthetically. Based on the calculation programs, free vibration frequencies and seismic responses of semi-rigid joint steel-concrete composite frame considering interface slip were calculated. The influences of interface slip and semi rigid joint on dynamic characteristics and seismic response were analyzed and the seismic design advices were presented. The results show that the interface slip decreases the free vibration frequencies and increase the seismic responses of composite frame. The semi-rigid joint reduces the free vibration frequencies and increases seismic responses of composite frame compared with rigid joint. With the increase of joint rotational stiffness, the elastic seismic responses of composite frame increase firstly and then decrease. The effects are related to the ratio of joint rotation stiffness to linear stiffness of composite beam.

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