One is equipped with micro dampers and the other is not
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If the original copyright owner disagrees
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The following two building blocks are built
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When the building is shaken by the wind force, the inertia of the damper mass will produce a reaction force and reverse swing to reduce the vibration and swing of the skyscraper
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The as steady as Mount Tai, because of its advanced shape, the reason why Shanghai Center Tower is stable is that its unique shape will twist nearly 1 degrees every time it rises
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It is known as the “eddy current tuned mass damper”, also known as the wind damper
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When the huge wave strikes from one side, the people on board will move in the opposite direction of the shaking of the boat to offset the impact of the huge wave and achieve balance
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How can skyscrapers be as stable as Mount Tai? On the Shanghai Center Tower, the first high-rise building in China, the damper called “the building’s artifact” began to oscillate, and it reduced the vibration of skyscrapers
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According to the introduction, the limit swing of this damper can reach 2m
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It is understood that the inspiration of “Shanghai insight” comes from the “eye of candle dragon” in the book of mountains and seas
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It’s great
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Sources: China Youth Daily, chinanews.com, morning news video, Shanghai time, etc
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Shanghai Center Tower staff said that the damper’s maximum swing can reach 2 meters, which can reduce the high level sway under strong wind and help the super high-rise building to maintain the stability and safety of the building
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Therefore, it is certain that the 6 typhoon will spread to Shanghai Center Tower
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On July 25, typhoon “fireworks” came in, which brought heavy rain and strong wind to Shanghai
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It is reported that in August 2019, during the impact of Typhoon “lichema”, the unilateral swing of the damper exceeded 50cm, and the instantaneous peak value once reached 70cm
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Since its opening in 2016, the swing range of dampers in Shanghai Center Tower has not yet reached its limit
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The shutdown of the shutdown! The national development and Reform Commission issued an emergency notice! Immediately carry out a comprehensive investigation of such projects
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Located in the 126 layer of the Shanghai center, the “Shanghai eye” is a “super giant” weighing 1000 tons
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Tuned mass damper (TMD) is composed of mass block, spring and damping system
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By adjusting its vibration frequency to near the main structure frequency, changing the resonance characteristics of the structure and improving the modal damping of the structure, it can achieve the effect of vibration reduction
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When the strong wind blows, the tension on the roof caused by the shaking of heavy objects is greater because it is close to the roof and the force arm is smaller, so the tension is greater and the inclination of the building is reduced
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There are many kinds of dampers, such as tuned mass damper, viscous damper and tuned liquid damper
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These people can make an exception to declare senior professional titles! Send a document here! 3
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But this is just an ornament
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Construction technology | constructor has become a disaster area! 678 qualifications of 500 construction enterprises to be withdrawn! 2
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Shanghai Center Tower is a “tuned mass damper”
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It is the world’s heaviest mass damper for tilting dampers
Will thousands of tons of objects be heavy at the top of the building? In fact, compared with the quality of the building, this 1000 tons is not a serious problem
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This is a professional engineering device to reduce the shaking of high-rise buildings under strong wind: the mass block and sling form a giant compound pendulum, which resonates with the main structure and can reduce the shaking of the building
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This configuration can also help to prevent typhoon
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It can make 90% of the people in the building feel more comfortable
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NOCITCE changed the push rule because of WeChat official account
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The copyright belongs to the original author and original source
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It is also the first time in the world to use eddy current damping for wind dampers of super high-rise buildings
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The real damper is located on the top of the 126 storey building, 584 meters away from the ground and weighs 1000 tons
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Let’s see how the “Zhenlou artifact” moves through the video? If you don’t understand, let’s take another example
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Previously, China had the impact of many typhoons, including typhoon “anbi” and super typhoon “lichema”, which did not affect the building
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A building in a typhoon is like a boat that meets a huge wave
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When an earthquake or typhoon comes, the building block with damper is as stable as a bell, while the building on the other side is already crumbling..
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When typhoon “ambi” landed in Shanghai, the surge of Shanghai Center Tower dampers ranged from 40 to 50 centimeters
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The eddy current technology used in magnetic levitation works is the first time in the world for wind dampers
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In Shanghai, the skyscrapers with such dampers are Shanghai Center Tower and global financial center
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But although the surge amplitude of the damper gradually increased when the typhoon approached, it had no effect on Shanghai Center Tower
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So far, the swing amplitude of the damper has not reached the limit state
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It is the first self-developed eddy current pendulum tuned mass damper in the world
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