To investigate the bond behavior of the concrete filled steel tubular (CFST) using the molybdenum tailing as the fine aggregate, 24 test specimens of the CFST are designed in consideration of molybdenum tailing replacement ratio, concrete strength, ratio of the filling height to the outer diameter and ratio of the outer diameter to the wall thickness. A series of push-out tests are conducted to analyze the working mechanism, failure mode, and bond stress-slip relation of the test specimens. The results show that the usage of the molybdenum tailing as the fine aggregate has no obvious effect on the working mechanism and failure mode of the CFST regardless of the test parameters, even though a slight difference is observed in the failure processes. The increase in the molybdenum tailing replacement ratio remarkably decreases the ultimate bond strength, but increase the ultimate failure slip of the test specimens whilst the ultimate failure slip shows no distinct change under the same ratio of the filling height to the outer diameter and ratio of the outer diameter to the wall thickness. The CFST test specimens with the molybdenum tailing shows slightly worse bond behavior than those without the molybdenum tailing. The proposed formula for the ultimate bond strength of the CFST with the molybdenum tailing fits well with the test results. Since, the limitations regarding the ultimate bond strengths of the CFST in the existing relevant specifications show the enough safety reserve, the proposed formula can be directly used for the design of the CFST with the molybdenum tailing.

为了研究以钼尾矿为细骨料的钢管混凝土的粘结性能，综合考虑钼尾矿替代率、混凝土强度、填充高度与外层的比值，设计了24个钢管混凝土试件。直径以及外径与壁厚之比。通过一系列的推出试验来分析试件的工作机制、失效模式和粘结应力-滑移关系。结果表明，无论试验参数如何，采用钼尾矿作为细骨料对钢管混凝土的工作机制和失效模式均没有明显影响，尽管失效过程略有差异。钼尾矿置换率的增加显着降低了极限结合强度，但增加了试件的极限失效滑移，而在相同的填充高度与外径比和填充高度比下，极限失效滑移没有明显变化。外径与壁厚之比。带有钼尾矿的钢管混凝土测试样本显示出比没有钼尾矿的钢管混凝土测试样本的粘合性能稍差。所提出的含钼尾矿钢管混凝土的极限结合强度公式与试验结果吻合良好。由于现有相关规范对钢管混凝土极限粘结强度的限制表明其具有足够的安全储备，因此所提出的公式可直接用于含钼尾矿钢管混凝土的设计。