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THE LOADING CAPACITY AND PRODUCING METHOD ANALYSIS OF COMPOSITE REINFORCED SCFT COLUMN
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摘要: 为了克服方钢管混凝土柱中,方钢管对混凝土的约束比圆钢管相对较差的弱点,提出采用复合加劲方钢管混凝土柱。在用钢量相近的前提下,通过加劲肋提高管壁的屈曲强度,增强对混凝土的约束,从而提高承载能力。由于管壁内施工空间狭窄,加劲肋与管壁的满焊连接比较困难。提出填塞点焊的方法,分析了方钢管混凝土的屈曲变形模式,给出了焊点的具体间距和数量。Abstract: To overcome the weakness in restriction of SCFT compared to common CFT, it is presented a composite reinforced SCFT column, which improves the buckling strength of the steel wall and the restriction to concrete by reinforcing ribs. Because of the strait construction space, full_seal between ribs and tube is difficult. It is also proposed a new method of / point seal0 , the modal of buckling is analyzed and the number or space of seal points is given.
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Key words:
- reinforce /
- buckling /
- SCFT /
- loading capacity
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[2] Han L H, Tao Z, Huang H, et al. Concrete-Filled Double Skin (SHS Outer and CHS Inner ) Steel Tubular Beam-Columns. Thin-Walled Structures, 2004, 42(9) : 1329-1355 韩林海. 钢管混凝土结构. 北京: 科学出版社, 2000 [3] 张正国 . 方钢管混凝土轴压短柱在短期一次静载下的基本性能研究. 郑州工学院学报, 1985(2) : 19-32 [4] Rudolph Szilard. Theory and Analysis of Plates, Classical and Numerical Methods. [S. L.] : Prentice-Hall Inc, 1974 [5] 何保康, 杨晓冰, 周天华. 矩形钢管混凝土轴压柱局部屈曲性能的解析分析. 西安建筑科技大学学报, 2002(9) : 210-213 [6] Brain Uy. Strength of Concrete Filled Steel Box Columns Incorporating Local Buckling. ASCE J. of Structural Engineering, 2000(3) : 341-352 [7] 陈. 钢结构稳定理论与设计. 北京: 科学出版社, 2001 -
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