Group Behavior of Double-Headed Anchored Blind Bolts within Concrete-Filled Circular Hollow Sections under Cyclic Loading

Abstract

Seven full-scale curved T-stubs connected to concrete-filled circular hollow sections (CFCHSs) using groups of double-headed anchored blind bolts (DHABBs) have been cyclically tested in this paper considering different configurations of the DHABBs and the addition of a through bolt (TB) and shear blind bolts (SBs). The cyclic testing consisted of axial forces being applied to the T-stub stem and transmitted to the column through the bolted T-stub flange connection. The relative contributions of the embedded heads, TB, SBs, and heads bearing on the tube wall to the total applied force obtained from finite-element analysis (FEA) for each specimen considered in the experiments have been summari..