This paper derives a component model to capture the tensile behavior of concrete-anchored slip-critical blind bolt (CASCBB) anchored in concrete-filled steel tubular sections (CFSTS). CASCBB is developed based on a rare blind bolting system which can achieve the same pre-tension as the conventional high strength bolts, i.e. SCBB, good for enhancing the stiffness and seismic performance of joints. Based on the previous experiments and simulation method, a series of parametric studies are performed on the tensile behavior of CASCBB connections. The effect from the parameters is studied in details, revealing the load-carrying mechanism of the connection. The component model mainly including tube face, anchored bolt shank and two concrete struts is derived. Each element has contribution to initial stiffness and yield load. In the second stage, one of the struts fails and the other one is damaged. The ultimate strength can be simplified as the sum of resistance from tube face and diagonal concrete strut. The theoretical model has a good match with finite element analysis (FEA). A simple and practical design method is proposed for determining the configurations and strength of CASCBBs in tubular sections under tensile load. The process of stiffness estimation is also given for such connection.

本文推导了一个组件模型来捕获锚固在混凝土填充钢管截面 (CFSTS) 中的混凝土锚固滑移临界盲栓 (CASCBB) 的拉伸行为。CASCBB是基于一种罕见的盲栓系统开发的，它可以达到与传统高强度螺栓SCBB相同的预紧力，有利于提高节点的刚度和抗震性能。基于先前的实验和模拟方法，对 CASCBB 连接的拉伸行为进行了一系列参数化研究。详细研究了参数的影响，揭示了连接的承载机制。推导了主要包括管面、锚栓杆和两根混凝土支柱的构件模型。每个元素都对初始刚度和屈服载荷有贡献。在第二阶段，一根支柱失效，另一根损坏。极限强度可以简化为管面和对角混凝土支柱的阻力之和。理论模型与有限元分析（FEA）有很好的匹配。提出了一种简单实用的设计方法来确定受拉载荷作用下管状截面中 CASCBB 的配置和强度。还给出了这种连接的刚度估计过程。