润扬长江公路大桥总体设计.rar

2009-9/润扬长江公路大桥总体设计.rar润扬长江公路大桥总体设计

摘 要 润扬长江公路大桥全长7371m，南汊主桥为主跨1490m悬索桥，北汊主桥为主跨406m斜拉桥，引桥为预应力混凝土连续箱梁桥。本文重点介绍建设条件、总体布置、主桥结构、主要技术特点和科研创新工作。
关键词 建设条件技术标准总体布置主桥结构技术特点科研创新

  1. 前言
  润扬长江公路大桥是江苏省高速公路主骨架和五处跨长江公路通道规划中的项目，北联同江至三亚、北京至上海国道主干线，南接上海至成都、上海至瑞丽国道主干线，同时联接镇江、扬州两座历史文化名城。这座大桥的建设对完善我国交通网络总体布局、促进江苏乃至长江三角洲区域的经济繁荣、更好地发挥长江黄金水道的作用，都具十分重要的意义。
  2. 建设条件
  2.1 地形地貌
  润扬长江公路大桥位于长江镇扬河段世业洲汊道下段。长江南侧为宁镇山脉隆起区，属剥蚀低山丘陵地貌；长江北侧为长江冲积平原。桥址区地势平坦，地表高程3~4m，属长江冲积平原河漫滩地。世业洲分长江为北汊和南汊，长江河道在该段为江心洲河型。
  2.2 河道基本特征
Run Yang Bridge Design

Summary of Run Yang Bridge length 7371m, the South Branch of the main bridge suspension bridge main span 1490m, North Branch Main 406m main span cable-stayed bridge, approach bridge, prestressed concrete continuous box girder bridge. This article focuses on building conditions, overall layout, the main bridge structure, the main technical characteristics and scientific innovation.
Keywords building technical standards for the overall layout of the main conditions of the bridge structure, technical characteristics of scientific research and innovation

  1. Foreword
  Runyang Yangtze River Highway Bridge is the main expressway in Jiangsu Province skeleton and five cross-channel planning in the Yangtze River Highway project, in conjunction with the North River to Sanya, Beijing-Shanghai national trunk road, south of Shanghai to Chengdu, and Shanghai to Ruili Guo Trunk at the same time join Zhenjiang, Yangzhou two historical and cultural city. Bridge construction on the Improvement of the overall layout of the transport network to promote the Jiangsu Yangtze River Delta region as well as economic prosperity, better play the role of Yangtze River, are a very important significance.
  2. Construction Conditions
  2.1 The topography
  Run Yang Bridge in Long Island Zhengyang River inlet under the World Business section. The south side of town for the Nanjing Yangtze River Mountains uplift, erosion is a hilly landscape; Yangtze River flood plain north of the Yangtze River. Bridge site area is flat, the surface elevation 3 ~ 4m, an alluvial plain of the Yangtze River flood plain land. World Business Chau points for the North Branch and South Branch of the Yangtze River, Yangtze River in the section for the type of alluvion River.
  2.2 The basic characteristics of river