偏心钢支撑混凝土框架结构的节点加固研究
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摘要
采取偏心钢支撑与混凝土框架结构之间的可靠连接,充分发挥偏心钢支撑耗能优的特点,是实现钢支撑有效加固钢筋混凝土框架的关键所在。对钢支撑与混凝土框架连接采用了U型外包钢方式,利用ABAQUS有限元软件建立模型通过对实验试件加以验证,得出结构的极限承载力、耗能破坏模式、抗侧刚度和延性系数。同时还对U型外包钢长度、底板厚度等设计参数进行了进一步分析,得到了各自对结构性能的影响规律。
It is very critical to realize the effective strengthening of the reinforced concrete frames by using the reliable connections between the eccentric steel bracing and reinforced concrete frame and giving a full play of the superior energy-dissipation behavior of the eccentric steel bracing.The U-Section Steel-Encased design was used in the connection of the eccentric steel bracing and reinforced concrete frame,the EF software in the ABAQUS was adopted to built the model and the experimental parts were examined,the paper obtained the fol-lowing: the ultimate carrying capacity of the structure,the energy dissipation failure mode,the lateral stiffness and ductility factor.Then the paper gave a further analysis on the relevant design parameter such as the length and thickness of the bottom plate in U-Section Steel-Encased connections,the corresponding influence behaviors were obtained.
It is very critical to realize the effective strengthening of the reinforced concrete frames by using the reliable connections between the eccentric steel bracing and reinforced concrete frame and giving a full play of the superior energy-dissipation behavior of the eccentric steel bracing.The U-Section Steel-Encased design was used in the connection of the eccentric steel bracing and reinforced concrete frame,the EF software in the ABAQUS was adopted to built the model and the experimental parts were examined,the paper obtained the fol-lowing: the ultimate carrying capacity of the structure,the energy dissipation failure mode,the lateral stiffness and ductility factor.Then the paper gave a further analysis on the relevant design parameter such as the length and thickness of the bottom plate in U-Section Steel-Encased connections,the corresponding influence behaviors were obtained.
引文
[1]路淼,石启印,王莉.新型外包钢混凝土组合梁框架结构抗震性能的试验[J].实验力学,2007,22(2):182-188.
[2]杨禹丞.RC框架内填Y型钢支撑的试验研究[D].苏州:苏州科技学院,2009.
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[4]王金昌,陈页开.ABAQUS在土木工程中的应用[M].杭州:浙江大学出版社,2006.
[5]宋振森.刚性钢框架梁柱连接在地震作用下的累积损伤破坏机理及抗震设计对策[D].西安:西安建筑科技大学,2001.
[6]过镇海,时旭东.钢筋混凝土原理与分析[M].北京:清华大学出版社,2003.
[2]杨禹丞.RC框架内填Y型钢支撑的试验研究[D].苏州:苏州科技学院,2009.
[3]Hibbitt,Karlsson&Sorensen,Inc.ABAQUS user's manuals version 6.3[M].Rhode Island:Hibbitt,Karlsson&Sorensen,Inc.,2002.
[4]王金昌,陈页开.ABAQUS在土木工程中的应用[M].杭州:浙江大学出版社,2006.
[5]宋振森.刚性钢框架梁柱连接在地震作用下的累积损伤破坏机理及抗震设计对策[D].西安:西安建筑科技大学,2001.
[6]过镇海,时旭东.钢筋混凝土原理与分析[M].北京:清华大学出版社,2003.
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