Vol. 11, No. 3, pp. 359-371 (2015)
STATIC AND FATIGUE BEHAVIOR OF CFRP-STRENGTHENED RC BRIDGE GIRDERS SUBJECTED TO VEHICLE OVERLOADING
Xiao-Yan Sun1, Jian-Guo Dai2, Hai-Long Wang1, * and Chong Xu 3
1 Department of Civil Engineering, Zhejiang University, Hangzhou, China.
2Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
3 Hanjia Design Group of China, Hangzhou 310005, China
*(Corresponding author: Email: This email address is being protected from spambots. You need JavaScript enabled to view it.)
DOI:10.18057/IJASC.2015.11.3.9
 View Article |
Export Citation: Plain Text | RIS | Endnote |
ABSTRACT
This paper presents an experimental study into the static and fatigue behavior of three pairs of small-scaled reinforced concrete (RC) bridge girders, in order to investigate the influences of overloading on the fatigue strengthening effects of externally bonded carbon fiber reinforced polymer (CFRP) laminates and understand the mechanisms of fatigue damage accumulation in CFRP-strengthened RC bridge girders under vehicle overloading. Two pairs were strengthened with CFRP laminates and the remained one pair was un-strengthened as references. Two types of overloading were implemented in this test program: one was overloading both prior to and after FRP strengthening and the other was cyclic overloading only after FRP strengthening. At the end of the cyclic overloading all the girders were tested under monotonic loading until failure. Through the evaluation of the pre-fatigue static strength, the development of deflection and cracks during the fatigue loading and the post-fatigue strength of both un-strengthened and CFRP-strengthened RC girders, the effects of the above two different types of overloading on their static and fatigue behaviors are extensively discussed.
KEYWORDS
RC girders, CFRP, Strengthening, Overloading, Fatigue
REFERENCES
[1] AASHTO, “AASHTO LRFD Bridge Design Specifications-3rd Ed”, Washington D.C., U.S.A., 2004.
[2] Karabinis, A.I. and Kiousis, P.D., “Plasticity Model for Reinforced Concrete Elements Subjected to Overloads”, Journal of Structural Engineering, ASCE, 2001, Vol.127, No.11, pp.1251-1256.
[3] Sun, X.Y., “Reliability-based Assessment of Reinforced Concrete Bridges in Commission and Strengthened Condition” (in Chinese), Dissertation Submitted to Dalian University of Technology in Conformity with the Requirements for the Degree of PhD, 2004.
[4] Gu, M., Tong, L.W., Zhao X.L. and Zhang, Y.F., “Numerical Analysis of Fatigue Behavior of Welded CFCHST-Joints”, Advanced Steel Construction, 2014, Vol. 10, No. 4, pp. 476-497.
[5] Hersi, M.I., “Analysis of Bridge Failures in the United States”, Graduate Program in Civil Engineering of Ohio State University. U.S.A., 2009.
[6] Ji, B.H. and Fu, Z.Q., “Analysis of Chinese Bridge Collapse Accident Causes in Recent Years”, China Civil Engineering Journal, 2010, Vol.43, No.s1, pp.495-499. (in Chinese)
[7] Grace, N.F., Sayed, G.A., Soliman A.K. and Saleh., K.R., “Strengthening Reinforced Concrete Beams Using Fiber-reinforced Polymer (FRP) Laminates”, ACI Structural Journal, 1999, Vol. 96, No. 5, pp. 865-875.
[8] Pham, H. and Al-Mahaidi, R., “Experimental Investigation into Flexural Retrofitting of Reinforced Concrete Bridge Beams Using FRP Composites”, Composite Structures, 2004, Vol. 66, No. 4, pp. 617-625.
[9] Esfahania, M.R., Kianoushb, M.R. and Tajaria, A.R., “Flexural Behaviour of Reinforced Concrete Beams Strengthened by CFRP Sheets”, Engineering Structures, 2007, Vol. 29, No. 10, pp. 2428-2444.
[10] Wang, W.W., Dai, J.G. and Harries, K.A., “Performance Evaluation of RC Beams Strengthened with an Externally Bonded FRP System under Simulated Vehicles Loads”, Journal of Bridge Engineering, ASCE, 2013, Vol. 18, No. 1, pp. 76-82.
[11] Wang, W.W., Dai, J.G., Harries, K.A. and Bao, Q.H., “Prestress Losses and Flexural Behavior of Reinforced Concrete Beams Strengthened with Post-tensioned CFRP Sheets”, Journal of Composites for Construction, ASCE, 2012, Vol. 16, No. 2, pp. 207-216.
[12] Xie, J.H., Huang, P.Y. and Guo, Y.C., “Fatigue Behavior of Reinforced Concrete Beams Strengthened with Pre-stressed Fiber Reinforced Polymer”, Construction and Building Materials, 2012, Vol. 27, No. 1, pp.149-157.
[13] Dong, J.F., Wang, Q.Y. and Guan, Z.W., “Structural Behaviour of RC Beams Externally Strengthened with FRP Sheets under Fatigue and Monotonic Loading”, Engineering Structures, 2012, Vol. 41, No. 8, pp. 24-33.
[14] Ferrier, E., Bigaud, D., Clément, J.C. and Hamelin P., “Fatigue-loading Effect on RC Beams Strengthened with Externally Bonded FRP”. Construction and Building Materials, 2011, Vol. 25, No. 2, pp. 539-546.
[15] Breña, S.F., Benouaich, M.A., Kreger, M.E. and Wood, S.L., “Fatigue Tests of Reinforced Concrete Beams Strengthened Using Carbon Fiber-reinforced Polymer Composites”. ACI Structural Journal, 2005, Vol. 102, No. 2, pp. 305-313.
[16] Al-Hammoud, R., Soudki, K. and Topper, T.H., “Fatigue Flexural Behavior of Corroded Reinforced Concrete Beams Repaired with CFRP Sheets”. Journal of composites for construction, ASCE, 2011, Vol. 15, No. 1, pp. 42-51.
[17] Al-Rousan, R. and Issa, M., “Fatigue Performance of Reinforced Concrete Beams Strengthened with CFRP Sheets”, Construction and Building Materials, 2011, Vol. 25, No. 8, pp. 3520-3529.
[18] Gheorghiu, C., Labossiere, P. and Proulx, J., “Fatigue and Monotonic Strength of RC Beams Strengthened with CFRPs”, Composite: Part A, 2006, Vol. 37, No. 8, pp. 1111-1118.