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进行了18组轴心受压钢管混凝土曲杆的试验,研究了管截面形状(圆形、方形)、初始位移(0～30mm)及长细比(20和60)对曲杆性能的影响。分析钢管混凝土曲杆的性能和破坏模型,并与无初始应变的偏心受压普通钢管混凝土比较。采用有限元模型,分析了轴心受压下钢管混凝土曲杆的全范围荷载-位移曲线。最后,将试验结果与AIJ-2008、AISC-2005、BS5400-2005、DBJ/T13-51-2010、EC4-2005等现行规范进行对比分析。
Eighteen sets of axial compression concrete filled steel tube concrete curved rods were tested. The effects of cross-sectional shape (circular, square), initial displacement (0 ~ 30mm) and slenderness ratio (20 and 60) The performance and damage model of curved concrete curved steel tube were analyzed and compared with ordinary CFST without eccentric compression. The finite element model was used to analyze the full range load-displacement curve of curved concrete-filled steel tube under axial compression. Finally, the test results are compared with the current codes such as AIJ-2008, AISC-2005, BS5400-2005, DBJ / T13-51-2010 and EC4-2005.