Collapse simulation of a four‐story steel moment frame by a distributed online hybrid test |
| |
| Authors: | Tao Wang Jason McCormick Nobuya Yoshitake Peng Pan Yosuke Murata Masayoshi Nakashima |
| |
| Institution: | 1. Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji, Kyoto 611‐0011, Japan;2. JSPS Postdoctoral fellow.;3. Ministry of Land, Infrastructure and Transport, Government of Japan, Kasumigaseki, Chiyodaku, Tokyo 100‐8918, Japan;4. Government officer.;5. Department of Civil Engineering, Tsinghua University, Beijing 100084, China;6. Assistant professor.;7. Graduate School of Engineering, Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji, Kyoto 611‐0011, Japan;8. Graduate student.;9. Professor. |
| |
| Abstract: | The collapse of a one‐bay, four‐story steel moment frame is simulated in this study by the proposed peer‐to‐peer (P2P) Internet online hybrid test system. The typical beam hinging mechanism, which is ensured by a strong‐column, weak‐beam design, is reproduced. The plastic hinges at the column bases are taken as the experimental portions, while the superstructure is analyzed numerically by a general‐purpose finite element program. The implicit plastic rotations of the two column bases are treated as boundary displacements. In order to account for the complex behavior of the column bases, the P2P system is modified to use the secant stiffness during iterations, and the physical specimens are designed such that the plastic hinge behavior can be obtained. For this study, the three substructures are distributed to different locations. A large ground motion is repeatedly imposed until the column bases lose their capacity to sustain the gravity load. As a result, significant deterioration is observed at both column bases. The proposed P2P system is thus demonstrated to be able to accommodate multiple‐tested substructures involving unstable behavior. The results suggest that the P2P Internet online hybrid test system provides a reliable means of studying structures up to collapse. Copyright © 2008 John Wiley & Sons, Ltd. |
| |
| Keywords: | P2P internet online hybrid test finite element method steel moment frame column base deterioration collapse |
|
|
