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| Vol. - No. | Vol.7 - No.3 |
|---|---|
| Date | Aug., 2018 |
| Title | Structural Design and Construction for Tall Damped Building with Irregularly-Shaped Plan and Elevation |
| Author | Yasuhiko Yamashita+, Soichiro Kushima, Yuuichirou Okuno, and Taisei Morishita |
| Institutions | Structural Engineering Section, Design Department, Osaka Main Office, Takenaka Corporation, Osaka 541-0053, Japan |
| Abstract |
This paper introduces three distinctive means for the use of a 189-meter high damped structure ensuring safety against earthquake: 1. Realization of L-shaped elevational structural planning: The bottom and top of the tower have belt trusses and hat trusses respectively to restrain the bending deformation. Furthermore, large-capacity oil dampers (damping force 6,000 kN) are installed in the middle part of the tower to restrain the higher-mode deformation. 2. Realization of L-shaped planar structural planning: We devised a means of matching the centers of gravity and rigidity by adjusting planar rigidity. Moreover, viscous damping devices are located at the edges of the L-shaped plan, where torsional deformation tends to be amplified. We call this the "Damping Tail" system. 3. Composite foundation to equalize deformations under different loading conditions: We studied the vertical and horizontal deformations using sway-rocking and 3D FEM models including the ground, and applied multi-stage diameter-enlarged piles to the tower and a mat foundation to the podium to keep the foundations from torsional deformations and ensure structural safety. |
| Keyword | "Damping Tail" system, High-capacity oil damper, Hat truss and belt truss, Composite foundation |
| PP. | PP.255~264 |
| Paper File |
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