Marvel of modern engineering: How Taiwan’s tallest skyscraper survived 7.4 earthquake – Times of India



In the wake of Taiwan’s most powerful earthquake in a quarter-century, the towering Taipei 101, once the world’s tallest skyscraper, emerged unscathed, showcasing the pinnacle of modern engineering against natural disasters. The 7.4 magnitude earthquake, which struck Taiwan leaving at least 9 dead and damaging 770 buildings, tested the island’s preparedness and architectural resilience, particularly in the capital Taipei, located a mere 80 miles from the epicenter.
Taipei 101’s slight sway during the earthquake is a feature, not a flaw, of its design.Constructed primarily from reinforced concrete, the skyscraper’s ability to flex in response to seismic activity, while maintaining rigidity against high winds and typhoons, is central to its survival. This principle of moving with, rather than against, seismic forces is a cornerstone of traditional architecture in East Asia’s earthquake-prone regions, a CNN report said.
A significant component of Taipei 101’s earthquake resistance is its tuned mass damper, a massive 660-ton golden steel sphere, suspended by cables within the tower. This technological marvel acts as a pendulum to counteract the building’s swaying, absorbing kinetic energy which is then dissipated as heat. Such dampers are vital in protecting skyscrapers worldwide from harmonic vibration, a dangerous amplification of movement that can lead to structural failure during earthquakes, the CNN report said.
The design of Taipei 101, by Taiwanese firm CY Lee & Partners, incorporates more than just the tuned mass damper for stability. Its foundation reaches deeply into the bedrock, supported by reinforced concrete and steel piles, while its core and perimeter mega-columns are connected via enormous steel outrigger trusses. Adhering to stringent anti-seismic building codes befitting its location along the “Pacific Ring of Fire,” Taipei 101 is a model of high-rise safety and design foresight.
Despite comprehensive digital modeling and physical testing, including “shake table” tests, the real-world performance of buildings like Taipei 101 during extreme seismic events remains partially theoretical. The building’s resilience to Wednesday’s quake is a practical demonstration of engineering success, the CNN report added.
As a popular attraction, Taipei 101’s observation deck offers visitors a unique glimpse of the tuned mass damper in action, especially during strong winds, symbolizing not just architectural achievement but a continuous commitment to safeguarding lives against the unpredictable forces of nature.





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