新型金属管混凝土柱力学性能研究Ⅱ:轴压长柱稳定系数的研究
|
摘要
新型金属管混凝土长柱构件稳定性是必须要考虑的一个重要问题。根据高强钢的初始缺陷小于普通钢材,给出了高强钢管混凝土的稳定系数计算公式及常用高强钢管混凝土柱的稳定系数表。由于不锈钢应力-应变曲线没有明显的屈服点和屈服平台,及其弹性模量略小于普通钢材,给出了不锈钢管混凝土柱的稳定系数计算公式及常用的稳定系数表。根据铝合金结构设计规范中铝合金结构稳定系数的计算公式,考虑"统一性"原理,给出了铝合金管混凝土柱的稳定系数计算公式及常用的稳定系数表。并通过有限元模拟结果验证了3种金属管混凝土稳定系数计算公式的正确性。
The stability of the new-type concrete filled metal tube(CFMT)long columns is an important issue that has to be taken into consideration.This paper brings forward the stability factor formula and tables of concrete filled high-strength steel tube(CFHST),concrete filled stainless steel tube(CFSST)and concrete filled aluminum alloy tube(CFAAT)on the basis of the lower initial imperfection of high-strength steel compared with common steel,considering no obvious yield point and yield plateau and much smaller elasticity modulus in the stress-strain curve of stainless steel,and using the stability factor formula in the Code for Design of Aluminum Alloy Structure.The corrections of the stability coefficient formula of all three concrete filled metal tube(CFMT)are verified with the simulating results of finite element method(FEM).
The stability of the new-type concrete filled metal tube(CFMT)long columns is an important issue that has to be taken into consideration.This paper brings forward the stability factor formula and tables of concrete filled high-strength steel tube(CFHST),concrete filled stainless steel tube(CFSST)and concrete filled aluminum alloy tube(CFAAT)on the basis of the lower initial imperfection of high-strength steel compared with common steel,considering no obvious yield point and yield plateau and much smaller elasticity modulus in the stress-strain curve of stainless steel,and using the stability factor formula in the Code for Design of Aluminum Alloy Structure.The corrections of the stability coefficient formula of all three concrete filled metal tube(CFMT)are verified with the simulating results of finite element method(FEM).
引文
[1]张岩,张安哥,陈梦成,等.圆钢管混凝土轴压长柱有限元分析[J].哈尔滨工业大学学报,2007,39(2):94-98Zhang Yan,Zhang Ange,Chen Mengcheng,et al.Finite element analysis of slender CFST columns under compression[J].Journal of Harbin Institute of Technology,2007,39(2):94-98(in Chinese)
[2]GB50017—2003钢结构设计规范[S].北京:中国计划出版社,2003GB50017—2003Code for Design of Steel Structures[S].Beijing:China Planning Press,2003(in Chinese)
[3]李斌,闻洋.钢管混凝土轴压长柱承载力的试验研究[J].地震工程与工程振动,2003,23(5):130-133Li Bin,Wen Yang.Experimental and research on concretefilled steel tube bearing capacity[J].Earthquake Engineering and Engineering Vibration,2003,23(5):130-133(in Chinese)
[4]施刚,石永久,王元清.超高强度钢材钢结构的工程应用[J].建筑钢结构进展,2008,10(4):32-38Shi Gang,Shi Yongjiu,Wang Yuanqing.Engineering application of ultra-high strength steel structures[J].Progress in Steel Building Structures,2008,10(4):32-38(in Chinese)
[5]施刚,石永久,王元清.超高强度钢材焊接箱形轴心受压柱整体稳定的有限元分析[J].沈阳建筑大学学报:自然科学版,2009,25(2):255-261Shi Gang,Shi Yongjiu,Wang Yuanqing.Finite element analysis on overall buckling of ultra-high strength steel welded box section columns under axial compression[J].Journal of Shenyang Jianzhu University:Natural Science Edition,2009,25(2):255-261(in Chinese)
[6]ECCS.Manual on stability of steel structures[M].Brussels,1976:229-253
[7]张少棠.钢铁材料手册.第5卷,不锈钢[M].北京:中国标准出版社,2001:1-40Zhang Shaotang.Steel material manual.Vol.5,Stainless steel[M].Beijing:Standards Press of China,2001:1-40(in Chinese)
[8]Yu Min,Zha Xiaoxiong,Ye Jianqiao,et al.A unified formulation for hollow and solid concrete-filled steel tube columns under axial compression[J].Engineering Structures,2010,32(4):1046-1053
[9]GB50429—2007铝合金结构设计规范[S].北京:中国计划出版社,2008GB50429—2007Code for Design of Aluminum Alloy Structure[S].Beijing:China Planning Press,2008(in Chinese)
[2]GB50017—2003钢结构设计规范[S].北京:中国计划出版社,2003GB50017—2003Code for Design of Steel Structures[S].Beijing:China Planning Press,2003(in Chinese)
[3]李斌,闻洋.钢管混凝土轴压长柱承载力的试验研究[J].地震工程与工程振动,2003,23(5):130-133Li Bin,Wen Yang.Experimental and research on concretefilled steel tube bearing capacity[J].Earthquake Engineering and Engineering Vibration,2003,23(5):130-133(in Chinese)
[4]施刚,石永久,王元清.超高强度钢材钢结构的工程应用[J].建筑钢结构进展,2008,10(4):32-38Shi Gang,Shi Yongjiu,Wang Yuanqing.Engineering application of ultra-high strength steel structures[J].Progress in Steel Building Structures,2008,10(4):32-38(in Chinese)
[5]施刚,石永久,王元清.超高强度钢材焊接箱形轴心受压柱整体稳定的有限元分析[J].沈阳建筑大学学报:自然科学版,2009,25(2):255-261Shi Gang,Shi Yongjiu,Wang Yuanqing.Finite element analysis on overall buckling of ultra-high strength steel welded box section columns under axial compression[J].Journal of Shenyang Jianzhu University:Natural Science Edition,2009,25(2):255-261(in Chinese)
[6]ECCS.Manual on stability of steel structures[M].Brussels,1976:229-253
[7]张少棠.钢铁材料手册.第5卷,不锈钢[M].北京:中国标准出版社,2001:1-40Zhang Shaotang.Steel material manual.Vol.5,Stainless steel[M].Beijing:Standards Press of China,2001:1-40(in Chinese)
[8]Yu Min,Zha Xiaoxiong,Ye Jianqiao,et al.A unified formulation for hollow and solid concrete-filled steel tube columns under axial compression[J].Engineering Structures,2010,32(4):1046-1053
[9]GB50429—2007铝合金结构设计规范[S].北京:中国计划出版社,2008GB50429—2007Code for Design of Aluminum Alloy Structure[S].Beijing:China Planning Press,2008(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心