研究结论：通过对钢一混结合段受力的研究分析表明：只要设计方案合理，构造处理恰当，钢箱梁一钢一混结合段一混凝土箱梁沿纵向刚度过渡就平稳，预应力施加作用明显，钢板与混凝土节点位移耦合；试验结果验证各测点实测结果与计算值吻合较好，说明有限元分析能较好地模拟钢一混结合段模型实际加载及受力情况。

Research conclusions: The study and analysis of the loading bearing performance at the junction between steel and concrete box girders show if the design is reasonable and the structure treatment is appropriate，the rigidity transition between steel and concrete box girders is fairly smooth，the significant effects aye produced from the imposed prestress， and the nodal displacements of steel and concrete coincide。The experimental results verify the results from all test points coincide with the calculation values and the finite element analysis can well simulate the actual loading scenario and load carrying condition at the steel—concrete conjunction model．