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首页> 外文会议>Proceedings of the 9th China-Korea-Japan Symposium on Structural Steel Construction >PERFORMANCE OF STEEL BEAM TO CONCRETE FILLED STEEL TUBULAR COLUMN FRAMES
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PERFORMANCE OF STEEL BEAM TO CONCRETE FILLED STEEL TUBULAR COLUMN FRAMES

机译：钢梁对钢管混凝土柱框架的性能

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摘要

This paper studies the performance of the composite frame with concrete-filled square hollow section (SHS) columns to steel beam. Six tests were performed and the test parameters included the cross-sectional dimension, the axial load level, and the beam-column linear stiffness ratio. Each test specimen consisted of two CFST columns and a steel beam to represent a typical frame element in a building, and each specimen was tested under a constant axial load and a cyclically increasing lateral load. The test results show that the lateral load versus lateral displacement hysteretic curves of the composite frame have no obvious strength deterioration and stiffness degradation. It was found that the composite frames exhibited high levels of energy dissipation and ductility. A finite element modeling (FEM) was developed to carry out the behavior of those composite frames. Accurate material and geometrical nonlinear for confined concrete and steel were considered in the analysis. The finite element program ABAQUS was adopted. A damage plastic model for concrete and elasto-plastic model for steel were used respectively. The results obtained from the FE model were verified against those experimental results. Parametric studies were conducted to investigate the influence of axial load level, beam-to-column linear stiffness ratio on the structural behaviour of composite frames. Simplified hysteretic lateral load (P) versus lateral displacement (A) models are proposed for such composite frames.
机译：本文研究了方形空心截面（SHS）柱对钢梁的组合框架的性能。进行了六次测试，测试参数包括横截面尺寸，轴向载荷水平和梁柱线性刚度比。每个测试样本由两个CFST柱和一个钢梁组成，代表建筑物中的典型框架元素，并且在恒定的轴向载荷和周期性增加的横向载荷下对每个样本进行测试。试验结果表明，复合框架的侧向荷载与侧向位移的滞后曲线没有明显的强度下降和刚度下降。发现复合框架表现出高水平的能量耗散和延展性。开发了有限元建模（FEM）来执行那些复合框架的行为。分析中考虑了承压混凝土和钢的精确材料和几何非线性。采用了有限元程序ABAQUS。分别使用了混凝土的损伤塑性模型和钢的弹塑性模型。从FE模型获得的结果与这些实验结果进行了验证。进行了参数研究，以研究轴向载荷水平，梁柱刚度比对复合框架结构性能的影响。对于这种复合框架，提出了简化的滞后侧向载荷（P）与侧向位移（A）模型。

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