Viscoelastic damper design method for two adjacent building structures

Abstract

The invention discloses a design method of a viscoelastic damper for shock absorption of two adjacent building structures, belongs to a design method of a damper used for shock absorption of the building structures, and solves the problems that an existing design method of a damper connected between the structures is tedious and does not have universality. The method comprises the following steps: (1) determining dynamic characteristic parameters and a mutual relation of two adjacent structures; (2) determining a damping control target during earthquake action; (3) determining a rigidity parameter and a damping parameter of the viscoelastic hysteresis damper connected between the structures, and calculating the rigidity parameter and the damping parameter of the viscoelastic hysteresis damper; and (4) determining parameters of the damper arranged in the height direction of the floor. The method is convenient and fast, the optimal rigidity parameter and the optimal damping parameter of the viscoelastic damper can be searched through a general data table only by utilizing the first-order natural vibration frequency ratio, the structural damping ratio and the mass ratio of two adjacent building structures, and therefore the rigidity and the damping value of the connected damper are determined; according to the method, engineers can be conveniently helped to select parameter values of the dampers, the dampers meeting requirements are manufactured or selected according to the parameters, and the method is of great significance to application and popularization of vibration control systems of adjacent building structures.

Description

Technical field: [0001] The invention belongs to a damper design method used for shock absorption of building structures. Background technique: [0002] Due to the dense urban population and the continuous shortage of land, the spacing between buildings may be too small, and collisions between buildings may occur when a strong earthquake occurs. Some buildings are provided with deformation joints, such as between the main high-rise building and the podium, which may also collide during strong earthquakes. Earthquake damage surveys show that buildings collide with each other in all major earthquakes. For example, in the 1985 Mexico City earthquake, more than 40% of the 330 seriously damaged or collapsed buildings were investigated. collided. Collision between adjacent structures was observed in the 1977 Romania earthquake, the 1994 Northridge earthquake, the 1999 Turkey earthquake, and the 2008 Wenchuan earthquake. In order to avoid mutual collision between buildings (stru...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a viscoelastic damper design method for two adjacent building structures, which solves the problems of the existing damper design methods such as tediousness, lack of versatility, and large errors, so that the viscoelastic damper can be connected between two adjacent structures. The design of the damper to realize the shock absorption of the structure is convenient and quick

Images