Techno Press


Computers and Concrete   Volume 9, Number 4, March 2012, pages 245-255
DOI: http://dx.doi.org/10.12989/cac.2012.9.4.245
 
Simulation of the damping effect of a high-rise CRST frame structure
Xilin Lu, Hongmei Zhang and Chunguang Meng

 
Abstract     [Full Text]
    The damping effect of a Concrete-filled Rectangular Steel Tube (CRST) frame structure is studied in this paper. Viscous dampers are employed to insure the function of the building especially subjected to earthquakes, for some of the main vertical elements of the building are not continuous. The shaking table test of a 1:15 scale model was conducted under different earthquake excitations to recognize the seismic behavior of this building. And the vibration damping effect was also investigated by the shaking table test and the simulation analysis. The nonlinear time-history analysis of the shaking table test model was carried out by the finite element analysis program CANNY. The simulation model was constructed in accordance with the tested one and was analyzed under the same loading condition and the simulation effect was then validated by the tested results. Further more, the simulation analysis of the prototype structure was carried out by the same procedure. Both the simulated and tested results indicate that there are no obvious weak stories on the damping equipped structure, and the dampers can provide the probability of an irregular CRST frame structure to meet the requirements of the design code on energy dissipation and deformation limitation.
 
Key Words
    concrete-filled rectangular steel tube; high-rise building; viscous damper; shaking table test; nonlinear time-history analysis.
 
Address
Xilin Lu and Hongmei Zhang: State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, 200092, China
Chunguang Meng: Architecture Design & Research Institute of Tongji University, Shanghai 200092, China
 

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