该文以大连卧龙湾商务区滨海路的翔凤河无背索斜拉拱桥为研究背景,简述了其施工方法及受力特点。依据合适的分析理论,借助有限元计算软件Midas/Civil,对结构主梁、主塔、斜拉索、拱肋、吊杆等构件进行模拟,建立了无背索斜拉拱桥的空间有限元模型。通过对模型的计算分析,改变影响斜拉拱桥的自重、斜拉索张拉力,吊索张拉力等参数,总结无背索斜拉拱桥的受力特点。 In this paper, the Xiangfenghe backless cable-stayed arch bridge in Binhai Road, Wolong Bay Business District in Dalian is taken as the research background, and its construction method and force characteristics are briefly described. According to the appropriate analysis theory, the finite element analysis software Midas / Civil was used to simulate the structure of main girder, main tower, stay cable, arch rib and boom. The space finite element model . Through the calculation and analysis of the model, the parameters that affect the self - weight of the cable - stayed bridge, the tensile force of the stayed cable and the tension of the cable are changed, and the stress characteristics of the cable - stayed bridge without backstay are summed up.