下穿式斜拉-拱组合结构体系桥:深圳燕罗人行桥

燕罗人行桥桥长136.0m,桥宽11.5 m,主跨108.0 m,矢跨比1/11.74。桥梁设计首创了“下穿式斜拉-拱组合结构体系”,相较于常规的上承式拱桥,该组合结构体系显著改善了主拱的受力,降低了拱脚的水平力,提高了主拱的刚度。燕罗人行桥由主拱、主梁、桥塔、主索、背索、竖向撑杆、圆管立柱和基础等组成,采用水中少（量）支架施工。

Downward Through-pass Cable-Stayed-Arch Composite Structural System Bridge: Yanluo Pedestrian Bridge in Shenzhen

The Yanluo Pedestrian Bridge has a length of 136.0 meters, a width of 11.5 meters, a main span of 108.0 meters, and a rise span ratio of 1/11.74. The bridge design introduces the innovative "Downward Through-pass Cable-stayed Inclined Arch Composite Structural System." Compared to conventional deck-type arch bridges, this composite structural system significantly enhances the load-bearing capacity of the main arch, reduces the horizontal forces on the arch abutments, and improves the stiffness of the main arch. The Yanluo Pedestrian Bridge consists of the main arch, main girder, bridge towers, main cables, back cables, vertical braces, steel pipe columns, and foundations. The construction employs minimal support in the water.