- Volume 8 Issue 3
DOI QR Code
Investigations of different steel layouts on the seismic behavior of transition steel-concrete composite connections
- Qi, Liangjie (Department of Civil Engineering, Xi'an University of Architecture and Technology) ;
- Xue, Jianyang (Department of Civil Engineering, Xi'an University of Architecture and Technology) ;
- Zhai, Lei (Department of Civil Engineering, Xi'an University of Architecture and Technology)
- Received : 2018.09.11
- Accepted : 2019.06.04
- Published : 2019.11.25
This article presents a comparative study of the effect of steel layouts on the seismic behavior of transition steel-concrete composite connections, both experimental and analytical investigations of concrete filled steel tube-reinforced concrete (CFST-RC) and steel reinforecd concrete-reinforced concrete (SRC-RC) structures were conducted. The steel-concrete composite connections were subjected to combined constant axial load and lateral cyclic displacements. Tests were carried out on four full-scale connections extracted from a real project engineering with different levels of axial force. The effect of steel layouts on the mechanical behavior of the transition connections was evaluated by failure modes, hysteretic behavior, backbone curves, displacement ductility, energy dissipation capacity and stiffness degradation. Test results showed that different steel layouts led to significantly different failure modes. For CFST-RC transition specimens, the circular cracks of the concrete at the RC column base was followed by steel yielding at the bottom of the CFST column. While uncoordinated deformation could be observed between SRC and RC columns in SRC-RC transition specimens, the crushing and peeling damage of unconfined concrete at the SRC column base was more serious. The existences of I-shape steel and steel tube avoided the pinching phenomenon on the hysteresis curve, which was different from the hysteresis curve of the general reinforced concrete column. The hysteresis loops were spindle-shaped, indicating excellent seismic performance for these transition composite connections. The average values of equivalent viscous damping coefficients of the four specimens are 0.123, 0.186 and 0.304 corresponding to the yielding point, peak point and ultimate point, respectively. Those values demonstrate that the transition steel-concrete composite connections have great energy dissipating capacity. Based on the experimental research, a high-fidelity ABAQUS model was established to further study the influence of concrete strength, steel grade and longitudinal reinforcement ratio on the mechanical behavior of transition composite connections.
Supported by : National Natural Science Foundation of China
- GB 50010 (2010), Code for Design of Concrete Structures, China Architecture & Building Press, Beijing.
- GB/T 2975 (1998), Steel and Steel Products-location and Preparation of Test Pieces for Mechanical Testing, State Bureau of Quality Technical Supervision, Beijing.
- JGJ 138 (2001), Technical Specification for Steel Reinforced Concrete Composite Structures, China Architecture & Building Press, Beijing.
- JGJ 138 (2016), Code for Design of Composite Structures, China Architecture & Building Press, Beijing.
- Chen, M. (2013), "Research on the mechanical behavior and abaqus analysis of joints between steel beams and concrete filled rectangular steel tube column", Xi'an University of Architecture and Technology, Xi'an.
- Chen, Z., Xu, J., Chen, Y. and Xue, J. (2015), "Seismic behavior of steel reinforced concrete (SRC) T-shaped column-beam planar and 3D hybrid joints under cyclic loads", Earthq. Struct., 8(3), 555-572. https://doi.org/10.12989/eas.2015.8.3.555
- Constantinou, M.C. and Symans, M. (1992), "Experimental and analytical investigation of seismic response of structures with supplemental fluid viscous dampers", National Center for Earthquake Engineering Research Buffalo, NY.
- D'Ambrisi, A. and Filippou, F.C. (1999), "Modeling of cyclic shear behavior in RC members", J. Struct. Eng., 125(10), 1143-1150. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:10(1143)
- Fu, Y.Y., Yan, S.W. and Du, C. (2011), "Performance analysis of CFST column and RC Column subjected to eccentric load", Appl. Mech. Mater., 94, 805-809.
- Han, L. and An, Y. (2014), "Performance of concrete-encased CFST stub columns under axial compression", J. Constr. Steel Res., 93 62-76. https://doi.org/10.1016/j.jcsr.2013.10.019
- Han, L., Tao, Z. and Liu, W. (2001), "Concrete filled steel tubular structures from theory to practice", J. Fuzhou Univ. (Nat. Sci. Ed.), 6, 24-34.
- Kunnath, S.K., Mander, J.B. and Fang, L. (1997), "Parameter identification for degrading and pinched hysteretic structural concrete systems", Eng. Struct., 19(3), 224-232. https://doi.org/10.1016/S0141-0296(96)00058-2
- Liu, W. (2005), "Research on mechanism of concrete-filled steel tubes subjected to local compression", Fuzhou University, Fuzhou.
- Lowes, L.N. and Altoontash, A. (2003), "Modeling reinforced-concrete beam-column joints subjected to cyclic loading", J. Struct. Eng., 129(12), 1686-1697. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:12(1686)
- Qi, L. and Xue, J. (2018), "Pseudo dynamic test and time-history analyses of traditional-style steel frame structures", Int. J. Steel Struct., 18, 402-416. https://doi.org/10.1007/s13296-018-0007-0
- Qi, L., Xue, J. and Leon, R.T. (2017), "Experimental and analytical investigation of transition steel connections in traditional-style buildings", Eng. Struct., 150, 438-450. https://doi.org/10.1016/j.engstruct.2017.07.062
- Qi, L., Xue, J., Zhai, L., Zhao, X. and Leon, R.T. (2018), "Experimental and numerical studies on seismic performance of traditional style steel-concrete composite frame", Compos. Struct., 201, 514-527. https://doi.org/10.1016/j.compstruct.2018.06.049
- Tirasit, P. and Kawashima, K. (2007), "Seismic performance of square reinforced concrete columns under combined cyclic flexural and torsional loadings", J. Earthq. Eng., 11(3), 425-452. https://doi.org/10.1080/13632460601031813
- Verderame, G.M., Fabbrocino, G. and Manfredi, G. (2008), "Seismic response of RC columns with smooth reinforcement. Part II: Cyclic tests", Eng. Struct., 30(9), 2289-2300. https://doi.org/10.1016/j.engstruct.2008.01.024
- Wang, Z., Han, L., Li, W. and Tao, Z. (2015), "Seismic performance of concrete-encased CFST piers: experimental study", J. Bridge Eng., 21(4), 1-12.
- Wu, K., Xue, J.Y. and Zhao, H.T. (2013), "Failure mechanism and bearing capacity of transfer columns in SRC-RC hybrid structures", Eur. J. Environ. Civil Eng., 17(sup1), 205-228. https://doi.org/10.1080/19648189.2013.834595
- Wu, K., Xue, J., Nan, Y. and Zhao, H. (2016), "Experimental research on seismic behavior of SRC-RC transfer columns", Steel Compos. Struct., 21(1), 157-175. https://doi.org/10.12989/scs.2016.21.1.157
- Wu, K., Xue, J. and Zhao, H. (2010), "Study on shear performance of SRC-RC transfer column with short column failure pattern", Indus. Constr., 40(11), 51-54.
- Wu, K., Xue, J., Zhao, H. and Wang, D. (2008), "Analysis of seismic performance of SRC-RC transfer column [J]", World Earthq. Eng., 3, 135-139.
- Xu, J., Chen, Z., Zhao, X., Demartino, C., Ozbakkaloglu, T. and Xue, J. (2019), "Seismic performance of circular recycled aggregate concrete-filled steel tubular columns: FEM modelling and sensitivity analysis", Thin Wall. Struct., 141, 509-525. https://doi.org/10.1016/j.tws.2019.04.016
- Xue, J. and Qi, L. (2016), "Experimental studies on steel frame structures of traditional-style buildings", Steel Compos. Struct., 22(2), 235-255. https://doi.org/10.12989/scs.2016.22.2.235
- Xue, J., Qi, L., Gao, L. and Liu, Z. (2016), "Mechanical behavior of lattice steel reinforced concrete inner frame with irregular section columns under cyclic reversed loading", Eng. Struct., 128, 225-236. https://doi.org/10.1016/j.engstruct.2016.09.045
- Yadav, R., Yuan, H., Chen, B. and Lian, Z. (2018), "Experimental study on seismic performance of latticed CFST-RC column connected with RC web", Thin Wall. Struct., 126, 258-265. https://doi.org/10.1016/j.tws.2017.11.043