Dynamic Damage Analysis of SRC Frame Structure under Earthquake Action

Abstract:

Structures may enter into nonlinear stage under strong earthquake, so precise prediction of nonlinear behavior for building structure in earthquake is important which can assess the earthquake resistance safety of structures accurately. The exact numerical analysis model is required in actual engineering. In this paper the concept of nonlinear dynamic damage is introduced in steel reinforced concrete (SRC) composite structure, based on the theory of continuous damage mechanics. The damage variable is defined and computed by effective plastic strain of material, furthermore, concrete dynamic constitutive model is derived which considered plastic strain of material. Finally, the damage dynamic balance equation is established. Via comparison with test results of a three-story, two-bay SRC frame model which is tested on a shaking table, it is shown that the results of numerical analysis agree well with test results, indicating that the nonlinear dynamic balance equation is capable of describing the dynamic response of SRC frame structure with satisfactory accuracy. The research supplies theoretical basis for the seismic behavior analysis of SRC high-rise buildings.

• Periodical: Key Engineering Materials (Volumes 385-387)
• Pages: 373-376
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.385-387.373
• Online since: July 2008
• Authors: Shan Suo Zheng, Bin Wang, Liang Zhang, Lei Li, Wei Wang
• Keywords: Damage Variable, Dynamic Balance Equation, Numerical Analysis, SRC Frame Structure

References

[1] Xue Jianyang, Zhao Hongtie. Experiment on the Elastoplastic Seismic Responses for Steel Reinforced Concrete Frame. J. of Xi'an Univ. of Arch. & Tech. Vol. 29 (1997), No. 4, p.360.

[2] Mazars J. A Description of Micro-and Macro-scale Damage of Concrete Structures. J. of Engineering Fracture Mechanics. Vol. 25 (1986), No. 5, p.729.

DOI: 10.1016/0013-7944(86)90036-6

[3] Brown, R. H. and Jirsa, J. O. Reinforced Concrete Beams under Load Reversals. J. Am. Concr. Inst. Vol. 68 (1971), No. 5, p.380.

[4] Ramm, E. Strategies for Tracing Nonlinear Response near Limit Point. Nonlinear Finite Element Analysis in Structural Mechanics: Pro., Europe-US Workshop, Springer, Berlin, p.63.

DOI: 10.1007/978-3-642-81589-8_5