中间加劲C型钢构件压弯滞回性能非线性模拟
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摘要
为克服普通薄壁C型钢构件在宽厚比较大时滞回性能差的缺点,首先对具有相同宽厚比的C型钢和加劲C型钢压弯构件的滞回性能进行了比较,结果表明加劲可有效改善此类构件的滞回性能;然后对具有中间加劲的C型钢构件在压弯循环荷载下的滞回性能、变形情况以及破坏模式进行了深入分析;研究了加劲设置对构件性能的影响,得出了合理的加劲布置方式;最后采用延性系数对中间加劲薄壁C型钢构件的抗震性能进行了评价,给出了设计建议。
The hysteretic behavior of common C steel members with large width-to-thickness ratio is bad.In order to overcome the weakness,the hysteretic behavior of C steel members with and without intermediate stiffener were compared at first.The results show that the intermediate stiffener is effective to modify the hysteretic behavior of thin-wall C steel members.Then the hysteretic behavior,deformed shapes and the final failure modes of C steel members with intermediate stiffeners under constant compression and cyclic bending were carefully analyzed.Finally,the aseismatic behavior of the thin-wall C steel members with intermediate stiffeners were assessed by ductility coefficients,and some preliminarily suggestions for the aseismatic design of thin-wall steel members were put forward.
The hysteretic behavior of common C steel members with large width-to-thickness ratio is bad.In order to overcome the weakness,the hysteretic behavior of C steel members with and without intermediate stiffener were compared at first.The results show that the intermediate stiffener is effective to modify the hysteretic behavior of thin-wall C steel members.Then the hysteretic behavior,deformed shapes and the final failure modes of C steel members with intermediate stiffeners under constant compression and cyclic bending were carefully analyzed.Finally,the aseismatic behavior of the thin-wall C steel members with intermediate stiffeners were assessed by ductility coefficients,and some preliminarily suggestions for the aseismatic design of thin-wall steel members were put forward.
引文
[1]Yu Weiwen.冷成型钢结构设计[M].3版.董军,夏冰青译.北京:中国水利水电出版社,2002.
[2]Dong Jun,Wang Shiqi,Lu Xi.Analysis on hysteretic behaviors of cold-Formed thin-wall steel members under cyclic Uniaxial Loading[J].Structur-al Engineering and Mechanics,2006,24(3):323-338.
[3]陆曦.冷成型薄壁C型钢压弯构件滞回性能研究[D].南京:南京工业大学,2006.
[4]董军,陆曦,王士奇.冷成型薄壁C型钢构件压弯滞回性能的数值分析[J].防灾减灾工程学报,2006,26(4):419-424.
[5]李国强,孙飞飞.关于钢结构抗震存在的问题和建议[J].地震工程与工程振动,2006,26(3):108-114.
[6]申林.高层结构钢支撑滞回性能分析及抗震设计对策[D].西安:西安建筑科技大学,2000.
[7]苏明周,顾强.箱形截面钢压弯构件的滞回性能和板件宽厚比限值研究[J].建筑结构学报,2000,21(5):41-47.
[8]周锋.宽肢薄腹钢柱滞回性能的试验研究与数值分析[D].上海:同济大学,2002.
[2]Dong Jun,Wang Shiqi,Lu Xi.Analysis on hysteretic behaviors of cold-Formed thin-wall steel members under cyclic Uniaxial Loading[J].Structur-al Engineering and Mechanics,2006,24(3):323-338.
[3]陆曦.冷成型薄壁C型钢压弯构件滞回性能研究[D].南京:南京工业大学,2006.
[4]董军,陆曦,王士奇.冷成型薄壁C型钢构件压弯滞回性能的数值分析[J].防灾减灾工程学报,2006,26(4):419-424.
[5]李国强,孙飞飞.关于钢结构抗震存在的问题和建议[J].地震工程与工程振动,2006,26(3):108-114.
[6]申林.高层结构钢支撑滞回性能分析及抗震设计对策[D].西安:西安建筑科技大学,2000.
[7]苏明周,顾强.箱形截面钢压弯构件的滞回性能和板件宽厚比限值研究[J].建筑结构学报,2000,21(5):41-47.
[8]周锋.宽肢薄腹钢柱滞回性能的试验研究与数值分析[D].上海:同济大学,2002.
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