According to the mechanical character of simply supported steel box girder with prestressed tendons,and considering the interaction of tendons and girder, the finite element model is established.

• 根据预应力简支钢箱梁的受力特性,考虑预应力索与钢箱梁的相互作用,建立了有限元计算模型,有限元计算值与实测值吻合较好。