4Ayyub B M, Sohn Y G, Saadatmanesh H. Prestressed composite girders Ⅰ: experimental study for negative moment [ J ]. Journal of Structural Engineering, ASCE, 1992,118 ( 10 ) : 2743-2762.
5Ayyub B M, Sohn Y G, Saadatmanesh H. Prestressed composite girders Ⅱ: analytical study for negative moment [ J]. Journal of Structural Engineering, ASCE, 1992,118 (10) :2763-2783.
6Nie J C, Fan J S, Cai C S. Stiffness and deflection of steel-concrete composite beams under negative bending [J]. Journal of Structural Engineering, ASCE, 2004,130 (11) :1842-1851.
7Rots J G, Nauta P, Kusters G, et al. Smeared crack approach and fracture localization in concrete [ J ]. HERON, 1985, 30(1) :1-48.
8Mansour M, Lee J Y, Hsu curves of concrete and steel T T C. Cyclic stress-strain bars in membrane elements [J]. Journal of Structural Engineering, ASCE, 2001,127 (12) :1402-1411.
9Belarbi A, Hsu T T C. Constitutive laws of concrete in tension and reinforcing bars stiffened by concrete [ J ]. ACI Structural Journal, 1994, 91(4) : 465-474.
10Hsu T T C, Zhang L X. Tension stiffening in reinforced concrete membrane elements [ J]. AGI Structural Journal, 1996, 93(1) :108-115.