This paper proposes a new seismic response control system using a block and tackle(hereinafter,referred to as a movable pulley damper system)developed especially for highrise buildings.The proposed system has a configuration where a damper is installed on the track of the cable-stayed wire,amplifying the amount of movement of the wire by using a movable pulley that increases the damping effect to reduce the vibration of a building.Since the wire can be stretched across distant parts of a building,this system is able to exert an effect on a large relative displacement.To control the shear and bending deformation of a high-rise building during earthquake shaking,we examine a method to connect the core structure(parking tower)and the surrounding frame(housing part)of a high-rise building using the movable pulley damper system.This system aims to reduce the earthquake response of the building by the force of the damper attached to the core structure.By enlarging the relative displacement between the core structure and the peripheral frame by the moving pulley,it is possible to move the damper in considerable extent to dissipate large vibration energy.To verify the effectiveness of this response control system,a shaking table test was conducted for a specimen simulating the core structure and the peripheral frame of a high-rise building.The test was conducted by changing the number of sheave stations,the base condition of core structure,and input waves.The deformation and acceleration of the specimen,the tension and displacement of the wire were measured and compared with a simulation model.
Response control High-rise building Block and tackle Earthquake Damper
Professor,Toyohashi University of Technology,Japan General Manager,Research Institute,Hazama Ando Corporation,Japan General Manager,Technical Research & Development Institute,Kumagai Gumi Co.Ltd.,Japan Research Staff,Research and Development Center,Toda Corporation,Japan Manager,Structural Design Division,Sato Kogyo Co.,Ltd.,Japan Senior Researcher,Research and Development Center,Nishimatsu Construction Co.,Ltd.,Japan Senior Researcher,Research Institute,Maeda Corporation,Japan