Learning from pagodas: the skyscraper that sways with the wind instead of fighting it
Tall buildings have a fundamental engineering problem: wind. As structures climb higher, the forces exerted by wind grow disproportionately, and the traditional solution, add more mass, thicker walls, larger dampers, becomes increasingly inefficient. The Burj Khalifa uses a tuned mass damper weighing 800 tons. The Shanghai Tower’s damper weighs 1,000 tons. These are brute-force solutions: resist the wind by being heavier than it.
A new design published in Nature Communications (DOI: 10.1038/s41467-026-74868-2) by researchers at Imperial College London and Arup takes the opposite approach. Instead of resisting the wind, the building moves with it.
The concept is inspired by traditional Japanese pagodas, which have survived centuries of earthquakes not because they are rigid but because they are flexible. A five-story pagoda does not stand stiff against the shaking ground; its floors slide and sway independently, dissipating seismic energy through relative motion rather than absorbing it through structural stress. The same principle, the researchers reasoned, can be applied to wind-induced sway in modern skyscrapers.
How movable floors work
The design replaces rigid floor slabs with movable plates that are connected to the building’s core through controlled damping mechanisms. When wind pushes the building, the floors do not simply follow the structure’s lean. They shift in the opposite direction, or at a different phase, effectively canceling out some of the motion before it reaches the occupants.
In wind-tunnel tests of a scale model representing a 300-meter tower, the moving-floor system reduced dangerous sway amplitudes significantly compared with a conventional rigid-floor design of the same height and mass. Crucially, the system achieves this without adding the massive tuned-mass dampers that current supertall buildings require, and without altering the building’s external shape, a practical advantage for architects who do not want their design dictated by mechanical constraints.
“We are essentially using the building’s own structure as the damper,” the researchers explain, rather than hanging a giant pendulum inside it.
A shift in structural philosophy
The distinction between passive and adaptive design is the deeper story here. A tuned mass damper is a passive device: a massive concrete or steel block that sits at the top of a building and swings opposite to the building’s motion, like a pendulum. It is effective, but it adds weight, takes up valuable space, and must be tuned to the building’s precise natural frequency, which can shift as the structure ages.
A movable floor system, by contrast, is inherently adaptive. The floors respond to the specific direction and magnitude of the wind in real time, distributing the damping effect throughout the building’s height rather than concentrating it at the top. This distributed approach is more efficient in principle, and the wind-tunnel results suggest it works in practice.
The pagoda inspiration is not incidental. Traditional Japanese pagodas use a central pillar that does not extend into the ground but hangs from the top, allowing each story to move independently during an earthquake. The floors slide on the central column rather than being rigidly attached, creating a structure that can sway dramatically without collapsing. The Imperial College design translates this concept into modern materials and wind, rather than seismic, loading.
What it means for future buildings
The practical implications extend beyond sway reduction. If movable floors can replace or reduce the need for massive dampers, the saved weight translates into savings in foundation costs, structural steel, and construction complexity. For buildings approaching 500 meters or more, the range where wind engineering becomes the dominant design constraint, every ton of saved structural mass matters.
The system also opens the possibility of taller buildings on sites with poor soil conditions, where the weight of conventional damping systems would require prohibitively expensive foundations.
There are open questions not addressed by the wind-tunnel model. How do movable floors affect fire safety, acoustic isolation, and vibration from occupants? How do the damping mechanisms perform over decades of continuous use? These will require full-scale demonstration before the concept becomes standard practice.
But the direction of travel is clear. Structural engineering, for most of the 20th century, was about resisting forces. The 21st-century approach, increasingly, is about accommodating them, moving with the wind rather than fighting it.
Reference: Martinez-Paneda et al., “Movable floor systems for wind-induced vibration control in tall buildings,” Nature Communications (2026). DOI: 10.1038/s41467-026-74868-2.