Experimental Study and Numerical Simulation on Damping Property of Fiber Reinforced Concrete and Its Frame Structures

Damping of a structure can be attained by passive or active methods. Passive methods make use of the inherent ability of certain materials (whether structural or non-structural materials) to absorb the vibration energy. Due to the large volume of structural materials in a structure, the contribution of a structural material to damping can be substantial. In this paper, some recent advances on research, development of fiber reinforced damping concrete and its structures for vibration control in mainland China, especially in Harbin Institute of Technology (HIT), P.R.China, are summarized. The main contents include the research of damping capacity (which is expressed by the loss tangent) and stiffness (which is expressed by the storage modulus) of fiber reinforced concrete, the differences on damping property at nonlinear stage, seismic behavior and destructive process and character between the plain concrete frame and fiber reinforced concrete frame were contrasted and analyzed by the experiment of uniaxial hysteresis experiment, the relationship between the damping ability of materials and the damping ratio of structure was built, then the two-story frame structures whose columns built by the fiber concrete were simulated by ANSYS software at earthquake. Finally, some issues to be further researched are pointed out.