| Title |
A Study on Analytical Model for Hysteretic Behavior of RC Floor Diaphragm Subjected to In-Plane and Out-of-Plane Loads |
| Abstract |
In this paper, an analytical macro model is proposed to describe hysteretic behavior of the floor diaphragm subjected to both in-plane and out-of-plane loads. The simplified line macro model with equivalent flexural and shear rigidity was adopted to consider the inelastic behavior in floor slabs not restricted to end zones due to presence of gravity loading. The primary moment-curvature curve of the member is acquired by examining envelopes of test results revealing that cracking load and yield load can be represented as fractions of ultimate load and yield displacement as fraction of slab length. The hysteretic behavior of the diaphragm was simulated by using three-parameter medel with parameter a for stiffness degradation, B for strength deterioration and Y for pinching behavior.The comparison of analytical results with experimental results for load-displacement curve shows a good agreement with respect to maximum load and the hysteretic characteristics such as stiffness degradation, strength deterioration and pinching behavior. |