The failure modes and the mechanical behaviors of the common steel & concrete composite beam and the prestressed beam and the strengthened beam are analyzed and compared.
对比分析了普通钢与混凝土组合梁、预应力钢与混凝土组合梁和预应力加固钢与混凝土组合梁的受力性能与破坏形态。
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。
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。
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