| Vol. - No. | Vol.4 - No.3 |
|---|---|
| Date | Sep., 2015 |
| Title |
Collapse Behavior of 18 Story Steel Moment Frame by Shaking Table Test |
| Author |
Keiichiro Suita1, Yoshitaka Suzuki2 and Motomi Takahashi3 |
| Institutions |
1Department of Architecture and Architectural Engineering, Kyoto University, Kyoto, Japan 2Structural Research Department, Kobori Research Complex Inc., Tokyo 107-8502, Japan 3Building Structures Group, Kajima Technical Research Institute, Kajima Corporation, Tokyo 182-0036, Japan |
| Abstract | A shaking table test was conducted at the E-Defense shaking table facility to investigate damage and collapse behavior of a steel high-rise building under exceedingly large ground motions. The specimen is an one-third scale 18-story steel moment frame designed and constructed according to design specifications and practices in date from 1980s to 1990s. The input motion used for shaking tests is a hypothetical long-period and long-duration strong ground motions calculated as a coinstantaneous earthquake of Tokai, Tonankai and Nankai Earthquake. The building specimen was subjected to a series of progressively increasing scaled motion until complete collapse. The damage to the steel frame began by yieldings of beams of lower stories and column bases of the first story. After several excitations by increasing scaled motions, cracks initiated at the welded moment connections and fracture of beam flanges spread to the lower stories. As the decrease of shear strength of stories, the drifts of lower stories increased and finally the frame collapsed and settled on the supporting frame. From the test, a typical proccess of collapse of a tall steel moment frame and the hysteretic behavior of steel structural members including deterioration due to local buckling and fracture are obtained. The results will give important information for further understanding and accurate numerical simulation of collapse behavior. |
| Keyword | high-rise steel building, shaking table test, long-period ground motion, collapse behavior, fracture of moment connection |
| PP. | PP.171~180 |
| Paper File |
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