Steel structure building is now a lot of architectural design used in the structure. In the traditional construction of our country, because it can not meet the needs of people, so the steel structure began to appear in front of us.
Compared with the high-rise reinforced concrete structure, the high-rise steel structure engineering is generally soft, and the lateral displacement value under the action of wind load and earthquake is larger. If the building swings or twists greatly under the action of gust, it will have a great impact on the feeling of human body, which often makes people feel uncomfortable and sometimes even unbearable. Research shows that the human body is most sensitive to wind vibration acceleration, in order to ensure a good working and living environment for high house steel structure engineering buildings under the action of wind, it is necessary to limit the maximum acceleration parallel to the direction of wind load and perpendicular to the direction of wind load.
When the lateral deformation of the building is too large under the action of wind load or frequent earthquakes, it will cause the damage of building decoration materials and the damage of non-structural components, resulting in the residual deformation of steel structure engineering components. In the case of rare earthquakes, if the deformation of steel structure engineering will cause great effect, and the serious damage of non-structural components will also cause personnel injury, excessively inclined buildings will also cause psychological panic among residents. At this time, in addition to ensuring that the structure does not collapse, the maximum deformation must be limited.
It can be seen that the high-rise steel structure engineering building must have sufficient lateral stiffness when the wind load and earthquake action, which requires the structural design to limit its lateral displacement value, the lateral displacement limit is divided into the overall relative displacement and the relative displacement between the two kinds, in which the limit of the relative displacement between the layers is more important.