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Earthquakes and Structures Volume 12, Number 1, January 2017 , pages 23-34 DOI: https://doi.org/10.12989/eas.2017.12.1.023 |
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Cyclic tests and numerical study of composite steel plate deep beam |
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Yi Hu, Liqiang Jiang and Hong Zheng
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| Abstract | ||
| Composite steel plate deep beam (CDB) is proposed as a lateral resisting member, which is constructed by steel plate and reinforced concrete (RC) panel, and it is connected with building frame through high-strength bolts. To investigate the seismic performance of the CDB, tests of two 1/3 scaled specimens with different length-to-height ratio were carried out under cyclic loads. The failure modes, load-carrying capacity, hysteretic behavior, ductility and energy dissipation were obtained and analyzed. In addition, the nonlinear finite element (FE) models of the specimens were established and verified by the test results. Besides, parametric analyses were performed to study the effect of length-to-height ratio, height-to-thickness ratio, material type and arrangement of RC panel. The experimental and numerical results showed that: the CDBs lost their load-carrying capacity because of the large out-of plane deformation and yield of the tension field formed on the steel plate. By increasing the length-to-height ratio of steel plate, the load-carrying capacity, elastic stiffness, ductility and energy dissipation capacity of the specimens were significantly enhanced. The ultimate loading capacity increased with increasing the length-to-height ratio of steel plate and yield strength of steel plate; and such capacity increased with decreasing of height-to-thickness ratio of steel plate and gap. Finally, a unified formula is proposed to calculate their ultimate loading capacity, and fitting formula on such indexes are provided for designation of the CDB. | ||
| Key Words | ||
| composite steel plate deep beam; cyclic test; seismic performance; finite element method | ||
| Address | ||
| Yi Hu, Liqiang Jiang and Hong Zheng: School of Civil Engineering, Chang&aqute;an University, Xi&aqute;an 710061, China Liqiang Jiang: School of Civil Engineering, Southeast University, Nanjing 210018, China | ||