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Taipei 101: Pagoda Supertall with Tuned Mass Damper (TMD)
8 flared pagoda modules, 8 steel corner megacolumns, outrigger belt trusses, and suspended 660-tonne sphere TMD pendulum.
Evaluate dynamic frequency response and pendulum-core interaction of Taipei 101, demonstrating how the tuned mass damper decouples lateral kinetic energy during severe East Asian typhoon and seismic events.
1. Geometry & FEA Mesh
- •Inverted-pyramid podium base (z = 0 to 64 m, width 64 m) with 8 foundation anchor zones
- •8 stacked pagoda tiers (each 48 m tall, 8 storeys) flaring outward with canted 5° overhang cornices
- •8 massive perimeter corner box megacolumns (3.0×3.0 m, t = 150 mm) carrying vertical and lateral overturning loads
- •Central braced steel core frame (24×24 m) linked to megacolumns via double-story X-braced outrigger trusses
- •Authentic Tuned Mass Damper (TMD): 660-tonne lumped mass node suspended on 4 angled cable stays with lateral spring dampers
- •Pinnacle crown and communications spire rising from z = 448 m to 508 m
2. Loads & Boundary Conditions
- •Fixed 6-DOF supports at ground column bases at z = 0
- •Self-weight gravity with tributary floor slab masses and 660 t TMD mass
- •Pacific typhoon lateral wind force along +X with parabolic height scaling
3. Simulation Results & Findings
- ✓Horizontal displacement profile clearly displays the stiffening effect of the 8 outrigger belt trusses
- ✓Modal analysis reveals distinct structural sway and pendulum damper tuned mode pairs
- ✓Critical buckling safety factor λ₁ confirms high structural stability of the box megacolumns
Demonstrates high-order modal vibration control and tuned mass damping modeling in an accessible web-native environment for earthquake- and wind-critical infrastructure.
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