This paper investigates experimentally the fatigue capacity of prestressed concrete-filled steel tube (CFT) I-shaped girders. The girder consists of steel plates, PT tendons, concrete, and steel shear keys. Three 10 m long girder specimens were prepared for different fatigue stress ranges and subjected to a three-point bending test producing a positive moment along the entire girder span. Displacement control was used to prevent sudden failure of the specimens. The test girder specimens exhibited fatigue capacities classified as Category B′ or C′ of the AASHTO criteria for positive and negative moment, respectively. The special testing arrangement used to produce the negative moment is presented, as well as the fatigue testing procedures and results. At the end of the paper, a modified equation for the S–N curve is derived for predicting the remaining life of the girder.
AASHTO (2004). LRFD Bridge Design Specifications, AASSHTO, Washington, D.C., USA.
2.
ChouC.C. and ChenY.C. (2006). “Cyclic tests of post-tensioned precast CFT segmental bridge columns with unbonded strands”, Earthquake Engineering and Structural Dynamics, Vol. 35, No. 2, pp. 159–175.
3.
FisherJ.W.AlbrechtP.A.YenB.T.KlingermanD.J. and McNameeB.M. (1974). Fatigue Strength of Steel Beams with Welded Stiffeners and Attachments, NCHRP Report 147, Transformation Research Board, Washington, D.C., USA.
4.
JiangS.F.WuZ.Q. and NiuS. (2010). “Experimental study on fire-exposed rectangular concrete-filled steel tubular (CFST) columns subjected to bi-axial force and bending”, Advances in Structural Engineering, Vol. 13, No. 4, pp. 551–560.
5.
KangJ.Y.ChoiE.S.ChinW.J. and LeeJ.W. (2007). “Flexural behavior of concrete-filled steel tube members and its application”, Steel Structures, Vol. 7, No. 4, pp. 319–324.
6.
KeatingP.B. and FisherJ.W. (1986). Evaluation of Fatigue Tests and Design Criteria on Welded Details, NCHRP Report-286, Transformation Research Board, Washington, D.C., USA.
7.
KimB.G. and SauseR. (2008). “Lateral torsional buckling strength of tubular flange girders”, Journal of Structural Engineering, ASCE, Vol. 134, No. 6, pp. 902–910.
8.
KimJ.H.HwangY.K.ChoH.N.KwonC.SimT.Y. and EomY.H. (2003). “Development of steel-confined prestressed concrete girder”, Proceedings of 7th Korea-Japan Joint Seminar on Steel Bridges, Daejoen, Korea, August, pp. 623–632.
9.
Korea Road and Transportation Association (2005). Standard Design Criteria for Road Bridges, Ministry of Construction and Transportation of Korea, Korea.
10.
LeeH.ParkK.H. and KongJ.S. (2008). “Analysis of static behavior of CFTA girder”, Proceeding of the 4th International Conference on Bridge Maintenance, Safety and Management (IABMAS), Seoul, Korea, July, pp. 1065–1071.
11.
LuiJ.ZhouX. and ZhangS. (2008). “Seismic behaviour of square CFT beam-columns under biaxial bending moment”, Journal of Constructional Steel Research, Vol. 64, No. 12, pp. 1473–1482.
12.
MontejoL.A.KowalskyM.J. and HassanT. (2009). “Seismic behavior of flexural dominated reinforced concrete bridge columns at low temperatures”, Journal of Cold Regions Engineering, Vol. 32, No. 1, pp. 18–42.
13.
NakamuraS.I.HosakaT. and NishiumiK. (2004). “Bending behavior of steel pipe girders filled with ultralight mortar”, Journal of Bridge Engineering, ASCE, Vol. 9, No. 3, pp. 297–303.
14.
NakamuraS.I.MomiyamaY.HosakaT. and HommaK. (2002). “New technologies of steel/concrete composite bridges”, Journal of Constructional Steel Research, Vol. 58, No. 1, pp. 99–130.
15.
QuH.LiG.ChenS.SunJ. and SozenM.A. (2011). “Analysis of circular concrete-filled steel tube specimen under lateral impact”, Advances in Structural Engineering, Vol. 14, No. 5, pp. 941–952.
16.
RiclesJ.M.PengS.W. and LuL.W. (2004). “Seismic behavior of composite concrete filled steel tube column-wide flange beam moment connections”, Journal of Structural Engineering, ASCE, Vol. 130, No. 2, pp. 223–232.
17.
ShanJ.H.ChenR.ZhangW.X.XiaY.YiW.J. and LuF.Y. (2007). “Behavior of concrete filled tubes and confined concrete filled tubes under high speed impact”, Advances in Structural Engineering, Vol. 10, No. 2, pp. 209–218.
18.
ZhangG.W.XiaoY. and KunnathS. (2009). “Low-cycle fatigue damage of circular concrete-filled-tube columns”, ACI Structural Journal, Vol. 106, No. 2, pp. 151–159.
19.
ZhaoL.BurgueiioR.RovereH.L.SeibleF. and KarbhariV. (2000). Preliminary Evaluation of the Hybrid Bridge System, Report No. TR-2000/04, Department of Structural Engineering, University of California at San Diego, SD, USA.
