复杂路况下的城市立交桥设计——以广州白云站综合交通枢纽工程广清节点为例  

The Design of Urban Overpass under Complex Road Conditions:Taking Guangzhou Baiyun Station Comprehensive Transportation Hub Project Guangqing Node as an Example

作　　者：刘小刚 汪荷玲 Liu Xiaogang;Wang Heling

机构地区：[1]广州市城市规划勘测设计研究院 [2]广州城市职业学院

出　　处：《城市建筑》2023年第22期190-193,共4页Urbanism and Architecture

摘　　要：广州白云站综合交通枢纽工程广清节点主线以高架形式下穿广清高速,并设四条匝道连接广清高速,形成半互通立交。设计以广清高速高架桥标准30 m跨径为基本跨径,根据地下管线分布,利用门架墩、承台跨越及局部调跨等布墩措施,合理避让,逐桩确定溶洞预处理方案。采取预拱度设置与主梁高度调整的措施严控新旧桥变形差。针对低净空吊装限制影响,钢盖梁采用拖拉后焊接等方法,多重措施解决新旧桥拼宽问题。工程方案合理解决了城区管线复杂区域的旧桥改造难点,以期为同类工程提供参考。The main line of Guangzhou Baiyun Station Comprehensive Transportation Hub Project’s Guangqing Node passes under Guangqing Expressway in an elevated form,with four ramps connecting to Guangqing Expressway and forming a semi-interchange.The design is based on the 30m standard span of Guangqing Expressway as the fundamental span.According to the distribution of underground pipelines,the measures such as gantry piers,bearing platform crossings,and local span adjustments are used to prevent collisions.The pre-treatment plan for karst caves is determined pile by pile.The deformation difference between the new and old bridges is strictly controlled by adjusting the pre-camber and the height of the main beam.In response to the restrictions on low-clearance lifting,the steel cap beam is welded after dragging,and multiple measures are taken to address the issue of widening between the new and old bridges.The engineering plan has reasonably solved the difficulties in the renovation of old bridges in complex areas of urban pipelines,and provided a reference for similar projects.

关 键 词：城市立交桥梁 管线保护 立交改造 钢盖梁门架墩 

分 类 号：TU248[建筑科学—建筑设计及理论] U442.54[建筑科学—桥梁与隧道工程] U445.461[交通运输工程—道路与铁道工程]