横琴岛第三通道下穿立交复杂结构节点设计-中国港湾建设.pdfVIP

36 卷 5 期 国港湾建设 Vol. 36 No.5 2016 年5 月 China Harbour Engineering May. 2016 横琴岛第三通道下穿立交复杂结构节点设计 黄天荣 （上海市城市建设设计研究总院，上海 200123 ） ： ， 。通过调整标高实现通道与下立交 要 以横琴岛 三通道为例 阐明了越江通道下穿立交复杂结构的节点设计 ， ， （ ； 相交段合建 并将排洪箱涵设置在立交上方 解决了多个建 构）筑物交叉的技术难题 通过保留原结构进行人行通 ， ， 道改建、在下立交最低点设置雨水泵房以及对高压燃气管保护等节点设计 最大程度利用了原有结构与节约投资 ； 。 实现了因地制宜的最优化设计 最后利用数值模拟验证了设计的可行性 ： ； ； ； 关键词 越江通道 下穿立交 复杂节点 优化设计 ： ： ： 中图分类号 U652 ；U452.2 文献标志码 A 文章编号 2095-7874（2016）05-0049-05 doi ：10.7640/zggwj s201605012 Design of structural nodes between the third interchange and upper underpass on Hengqin Island HUANG Tian-rong （Shanghai Urban Construction Design Research Institute, Shanghai 200123, China ） Abstract The design of nodes of complex underpass structures in a crossing-river passage was introduced based on the Third Interchange on Hengqin Island. Through elevation adj ustment to achieve the unifying construction of the interchange and the underpass and setting the drainage box culvert over the underpass, the difficulty of several structures encountered was solved. And the passage was reformed with the main structure unchanged, and the pumping house was built at the lowest point of the underpass and the high pressure fuel gas pipeline was protected. These measures made use the existing structures and cut down the investment to the utmost, as well as