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介绍北京房山五渡桥采用三角刚架悬吊连续梁组合体系的技术构思,分析这种新颖桥梁特殊的三角刚架、吊索与梁的结构组合,采用“刚梁刚塔柔索”思路设计各细部尺寸使其刚度相互匹配。该桥造型新颖,与风景融合一体,并首次使用倾斜预压式钢-混结合段方式。三角刚架悬吊连续梁组合体系的应用丰富了梁与其他结构的组合形式,展现了新的理念、技术以及创新点。
This paper introduces the technical conception of the composite system of suspended continuous girder with triangular rigid frame in Wuduqiao of Beijing Fangshan, analyzes the structural combination of the special triangular frame, sling and beam of this novel bridge, adopts “rigid beam rigid cable” Ideas design the size of each detail to match the stiffness of each other. The bridge is new in style and integrated with the landscape, and for the first time uses a pre-stressed inclined steel-mixed section approach. The application of the combination system of suspended frame girder with continuous triangular beams enriches the combination of beams and other structures and presents new ideas, technologies and innovations.