| Vol. - No. | Vol.3 - No.4 |
|---|---|
| Date | Dec., 2014 |
| Title | Sensitivity Analysis Related to Redundancy of Regular and Irregular Framed Structures after Member Disappearance |
| Author | Takumi Ito1,+ and Toshinobu Takemura2 |
| Institutions |
1 Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, Japan 2 Yokohama National University, 79-1 Tokiwadai, Hodogaya-ku, Yokohama-city, Kanagawa, Japan |
| Abstract |
Recently, there have been some reported examples of structural collapse due to gravity, subsequent to damage from accident or an excitation that was not prepared for in the design process. A close view of new concepts, such as a redundancy and key elements, has been taken with the aim of ensuring the robustness of a structure, even in the event of an unexpected disturbance. The author previously proposed a sensitivity index of the vertical load carrying capacity to member disappearance for framed structures. The index is defined as the ratio of the load carrying capacity after a member or a set of an adjacent member disappears, to the original load carrying capacity. The member with the highest index may be regarded as a key element. The concept of biomimicry is being applied to various fields of engineering, and tree-shaped structures are sometimes used for the design of building structures. In this study a sensitivity analysis is applied to the irregular-framed structures such as tree-shaped structures. |
| Keyword | Vertical load carrying capacity, Sensitivity index, Key element, Framed structures, Tree-shaped structure |
| PP. | PP.297~304 |
| Paper File |
 View |