Behavior of Concrete-Filled Steel Tube Beam Columns
Behavior of Concrete-Filled Steel Tube Beam Columns
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DOI：
10.1061/(asce)0733-9445(2004)130:2(189
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发表时间：
2004-02
期刊：
影响因子：
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通讯作者：
E. Inai;A. Mukai;Kai Makoto;Hiroyoshi Tokinoya;T. Fukumoto;K. Mori
中科院分区：
文献类型：
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作者：
E. Inai;A. Mukai;Kai Makoto;Hiroyoshi Tokinoya;T. Fukumoto;K. Mori
对不同材料强度的圆钢管和方钢管混凝土梁柱的受力性能进行了试验研究。主要试验参数为钢材强度(400、590和780 Mpa)、钢管直径(宽厚比)和混凝土强度(40和90 Mpa)。对内梁柱模型进行了恒定轴压和循环水平荷载作用下侧向变形递增的试验，以阐明试验参数对其性能的影响。外梁柱模型在包括轴拉在内的变轴向荷载作用下水平加载。并对双向受弯的方梁柱的受力性能进行了研究。试验结果表明，强度越高、钢管厚度越大，梁柱的整体性能越好，而混凝土强度越高，梁柱的整体性能越差。此外，本文还对钢管混凝土梁柱试件的滞回性能进行了计算机模拟。除少数情况外，分析结果与试验结果吻合较好。
The behavior of concrete-filled circular and square steel tubular (CFT) beam columns with a variety of material strengths was investigated experimentally. The main test parameters are steel strength (400, 590, and 780 MPa), diameter- (width-) to-thickness ratio of steel tube, and concrete strength (40 and 90 MPa). The interior beam-column models were tested under constant axial compression and cyclic horizontal load with incrementally increasing lateral deformation to clarify the effects of the test parameters on the behavior. The exterior beam-column models were laterally loaded under variable axial load, including axial tension. The behavior of square beam columns subjected to biaxial bending was also investigated. The test results show that higher strength and thicker steel tubes give better overall behavior of the beam column, while higher strength concrete has an adverse effect on the behavior. Furthermore, computer simulations for the hysteretic behavior of CFT beam-column specimens are presented here. The analytical results show excellent agreement with the test results except for a few cases.