Under normal wind pressure, if the height above the ground is10m and the wind speed is 5m per second, the wind speed can reach15m per second at an altitude of 90m. If it is as high as 300-400 meters, the wind will be stronger, that is, the wind speed will reach more than 30 meters/second, and the skyscraper will shake. The World Trade Center in New York is usually 0. 15-0.3 meters away from the center in windy season, and the displacement can reach 0.9 meters under the action of strong hurricane. According to the design, the maximum deviation under the maximum wind force is1.2m. The Sears Tower in Chicago, 443m high, can deviate from the center1.8m in strong wind. It is said that the gyro balance device can be adjusted to 1.5 meters.
In fact, in the structural design of buildings, the effects of wind and earthquake forces should be considered. Buildings designed and constructed according to specifications have never been damaged by the wind, let alone collapsed. That depends on whether your house is strong or not. Normal houses with general 14 typhoon are not dangerous, but the wind is stronger. It is understood that on July 8, 20 14, Hainan was hit by the strongest typhoon "rammasun" in 4 1 year. On the same day 15: 30, "rammasun" landed on the coast of Wengtian Town, Wenchang City. When landing, the maximum wind force near the center was 17 (60m/s), which was a super typhoon.
High-rise buildings in the northern coastal area of Haikou City, Hainan Province were damaged to varying degrees, and some high-rise buildings near the sea were seriously damaged. Haikou Pearl River Plaza was brutally abused by the typhoon, and hundreds of skylights were opened in Emgrand, Imperial Capital and Dijing Building. Hainan University has 2 1 dormitory windows facing the sea, of which 17 door was washed down and almost all dormitory windows were shattered. However, as long as the house is built according to Hainan's planning standards and normal working procedures, it can completely resist the super typhoon 17.
Under normal design, the load per square meter of a 20-meter-high building near Haikou coast can reach 220 kilograms, and the load generated by the maximum wind speed of typhoon rammasun this time is about 220 kilograms per square meter. It can be seen that it will not be damaged if it is designed and constructed according to the current codes and standards. The shaking of high-rise buildings is normal and safe as long as it is within the allowable range, but there are quality problems with crooked buildings.