Force-Displacement Hysteretic Model for Grid Joints and Splices of Suspended Ceiling

Abstract:

Low cycle tests on the main tee splices， main-cross tee joints and peripheral joints of suspended ceiling were conducted. The failure modes of grid joints and splices were summarized. The load-bearing ability and deformation capacity of grid joints and splices were analyzed. The Pinching4 model in OpenSEES software was used to establish the force-displacement hysteretic model for grid joints and splices. The force-displacement hysteresis curve based on the hysteretic model is consistent with that obtained from the experiments， and as the number of cyclic loading increases， the change rule of the accumulated energy dissipation based on the hysteretic model agrees well with the corresponding experimental results. On this basis， the generic hysteretic model for various grid joints and splices was further established， and the recommended values of generic hysteretic model parameters for grid joints and splices were given.

Key words:suspended ceiling;grid joints and splices;seismic performance;experimental study;force-displacement hysteretic model