Numerical analysis on shock absortion and damping effect of frame structures-MTMD
Huang Wei1, Wang Meng1, Lu Jun-long2, He Ming-sheng3, Zhang Cheng-hua1
1. School of Civil Engineering, Xi'an University of Architecture & Technology, Xi’an 710055,China; 2. School of Civil Engineering and Architecture of Chang’an University, Xi’an 710061, China; 3. School of Water Conservancy and Architectural Engineering, Xinjiang Shihezi University, Shihezi 832003,China
Abstract：The enclosure wall vibration-absorption structure is a new frame structure with MTMD system, the enclosure walls, as a mass damper in TMD, can overcome the shortcoming that the frame structures can’t absorb energy continually. In order to study the vibration-absorption effect of the MTMD in enclosure wall structures and apply the MTMD technology in structure design conveniently, damping parameters of vibration-absorption device in MTMD-Steel Frame structure are studied based on the vibration-absorption principle of MTMD systems and Parameter Optimal Design Method. The vibration performance of the structure is calculated by using the finite element software SAP2000. By the time-history analysis, a comparison of the acceleration and displacement between the traditional frame-steel model and MTMD-steel frame model is carried out. The results indicate that: MTMD-steel frame based on the enclosure wall vibration-absorption structure has a significant seismic reduction effect. The periods of the MTMD model are 2 or 2 times than those of the general frames based on the modal analysis. And it could effectively reduce the structural response; the damping rate is generally between 5% -40% based on the Time-history analysis,. The analysis could provide the theory basis and reference for construction design
2012, Vol. 31 
