Abstract
This paper investigates behaviors of the anchorage connections for buckling restrained braces (BRBs). Finite element (FE) models are established by using software ABAQUS to simulate some tests reported in Part 1 of the companion papers. The material nonlinearities of concrete, anchor bars and anchor plates with the contact property between them are considered in the FE models. A numerical formula is developed for predicting the shear stiffness of anchor bars based on the results from the parametric study using ABAQUS. A formula dealing with the tensile stiffness of the anchor bars is presented relied on the theoretical study. Both of the proposed formulas are verified with the test results. Some design suggestions of the anchorage connections for buckling restrained braces are presented on the basis of the theoretical and experimental studies.
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