Axial load behaviour of high-strength rectangular concrete-filled steel tubular stub columns
Axial load behaviour of high-strength rectangular concrete-filled steel tubular stub columns
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DOI：
10.1016/j.tws.2005.03.007
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发表时间：
2005-08-01
影响因子：
6.4
通讯作者：
Gho, WM
中科院分区：
文献类型：
--
作者：
Liu, DL;Gho, WM
对矩形钢管混凝土短柱的轴压性能进行了试验研究。共对26个样本进行了同心压缩试验。主要测试参数是材料强度（f（c）' = 55 - 106 MPa; f（y）= 300和495 MPa）和横截面纵横比（1.0-2.0）。在试验过程中，所有试件均观察到良好的延性性能。轴向承载力试验与设计规范的比较表明，ACI和AISC给出的安全估计分别为7%和8%。另一方面，EC 4高估了由低碳钢和高强混凝土制成的试件的极限承载力。一个纤维模型的开发，以评估试样的轴向载荷行为。对试验数据的模型的校准表明，它可以密切预测高强度矩形钢管混凝土短柱的非线性行为。(C)2005爱思唯尔有限公司保留所有权利。
This paper presents an experimental investigation into the axial load behaviour of rectangular concrete-filled steel tubular (CFT) stub columns. A total of 26 specimens were tested under concentric compression. The primary test parameters were material strengths (f(c)' = 55 - 106 MPa; f(y) = 300 and 495 MPa) and cross-sectional aspect ratio (1.0-2.0). Favourable ductility performance was observed for all specimens during the tests. A comparison of axial load capacity between the tests and the design codes shows that ACI and AISC give safe estimation by 7 and 8%, respectively. On the other hand, EC4 overestimates the ultimate capacity of the specimens fabricated from mild steel and high-strength concrete. A fibre model is developed to evaluate the axial load behaviour of the specimens. Calibration of the model against the test data suggests that it can closely predict the non-linear behaviour of high-strength rectangular CFT stub columns. (C) 2005 Elsevier Ltd. All rights reserved.