Abstract:
The coupling beam with steel truss configuration is a viable alternative for steel
coupling beam structure. The system uses a steel truss, which is easier to be constructed than the
typically reinforced concrete coupling beam. In this paper, a simple type of coupling beam with
steel truss configuration created by angle profiles has been modelled in numerical simulation for
replacing typical reinforcement of coupling beams. The experimental study has shown that steel
truss-coupling beam using the steel angle profiles can show fairly well behaviour under lateral
load. In this study, the non-linear finite element using non-linear time history analysis in SAP2000
has been applied to simulate the overall behaviour of previously tested of steel truss coupling
beam. The strength of the material, the geometrical and the loading history are adopted from
experimental testing. Several parameters in quasi-static loading analysis need to be determined
such as the non-linear material of plastic hinge, the time step, and the damping. The numerical
results will be compared to the experimental result in order to validate the outcomes. From the
numerical analysis, it can be appointed that the ultimate strength capacity adequately shows
behaviours between the actual tests. Finally, the model that considers the appropriate non-linear
material of plastic hinge due to buckling, the time step with slow hydraulic jack movement, and
damping ratio as main parameters can predict quite well the test results in term of hysteretic
shape. According to the numerical simulation, the degree of rigidity also plays an important role
and should be considered in the design phase in order to investigate the end connections of truss
element in the steel truss coupling beam in the shear wall system
