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异形钢管混凝土柱偏压承载力统一算法研究
引用本文:颜燕祥,徐礼华,余敏,李彪,查晓雄.异形钢管混凝土柱偏压承载力统一算法研究[J].湖南大学学报(自然科学版),2018,45(3):18-28.
作者姓名:颜燕祥  徐礼华  余敏  李彪  查晓雄
作者单位:(1.武汉大学 土木建筑工程学院,湖北 武汉 430072;2.湖北工程学院 土木工程学院,湖北 孝感 432000;3.哈尔滨工业大学 深圳研究生院,广东 深圳 518055)
摘    要:为方便T形、L形和十字形钢管混凝土柱的工程设计,结合国内外相关规程计算方法,采用自编程序对异形钢管混凝土柱压弯相关方程曲线进行了计算分析,提出异形钢管混凝土柱偏压承载力统一算法,最后对不同截面形式及构造的异形钢管混凝土柱偏压承载力进行了算法验证.结果表明:统一算法力学意义明确,操作简单易行,具备一定的安全储备;承载力试验值与计算值比值的均值为1.1~1.4,其计算精度与荷载作用截面的工程轴有关.统一算法的提出补充完善了异形钢管混凝土柱计算理论,利于异形钢管混凝土结构的推广应用.

关 键 词:异形钢管混凝土柱  偏心受压  承载力  统一算法  算法验证

Study of Unified Calculation Method for Eccentric-loaded Capacity of Special-shaped Concrete Filled Steel Tubular Columns
YAN Yanxiang,XU Lihu,YU Min,LI Biao,ZHA Xiaoxiong.Study of Unified Calculation Method for Eccentric-loaded Capacity of Special-shaped Concrete Filled Steel Tubular Columns[J].Journal of Hunan University(Naturnal Science),2018,45(3):18-28.
Authors:YAN Yanxiang  XU Lihu  YU Min  LI Biao  ZHA Xiaoxiong
Institution:(1.School of Civil Engineering,Wuhan University,Wuhan 430072,China; 2.School of Civil Engineering,Hubei Engineering University,Xiaogan 432000,China; 3.Shenzhen Graduate School,Harbin Institute of Technology,Shenzhen 518055,China)
Abstract:For the convenience of engineering design on T-shaped, L-shaped, and cross-shaped concrete filled steel tubular (CFST) columns, a unified algorithm for eccentric-loaded capacity of special-shaped CFST columns was developed through an analysis of calculation methods in the typical specifications. The N-M relationship curves of columns were calculated and analyzed by using a self-complied numerical analysis method. The validity of the algorithm was then verified by experimental results in other literatures for various cross-section forms of special-shaped CFST columns. The results show that the uniform algorithm has clear mechanical meaning and it is easy to operate. The mean ratio of the test result to prediction of load bearing capacity is 1.1~1.4, with a certain safety reservation, but the prediction accuracy depends on the engineering axis direction of loading cross-section. The proposed unified algorithm improves the computational theories for special-shaped CFST columns, which can promote its developments and applications in the practical engineering.
Keywords:special-shaped concrete filled steel tubular columns  eccentric compression  bearing capacity  unified calculation method  algorithm verification
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