大跨径斜拉桥超高钢-混组合索塔施工关键技术探析  

Key Technologies for Construction of Super-high Steel-concrete Composite Pylons for Large-span Cable-stayed Bridges

作　　者：罗森 LUO Sen(Road and Bridge Construction Co.,Ltd.,Zhongshan Guangdong 528400)

机构地区：[1]中交路桥华南工程有限公司,广东中山528400

出　　处：《中国科技纵横》2024年第20期120-122,共3页China Science & Technology Overview

摘　　要：随着国家交通事业的发展,桥梁跨径越来越大。大跨径斜拉桥作为一种应用广泛的桥梁形式,其结构受力复杂、施工难度大。因此,必须做好受力分析,优化设计与施工技术。钢—混组合索塔(即钢壳+塔内混凝土)施工是斜拉桥施工的重难点。为达到结构安全、设计使用年限内经久耐用等目标,设计及施工阶段需要结合桥塔结构形式及受力特点,合理选择钢壳—混凝土连接工艺和良好性能混凝土,合理设置钢混结合段位置,提高整体受力性能。基于此,本文以某斜拉桥项目为例,重点分析钢混组合索塔施工的技术类型及要点,旨在为同类型项目提供参考与借鉴。with the development of national transportation,the bridge span is getting larger and larger.As one of the widely used bridge forms,the structure of long-span cable-stayed bridge is complicated and difficult to construct,so we must do a good job of stress analysis,optimization of design and construction technology.The construction of steelconcrete composite pylon(steel shell+concrete in pylon)is the key and difficult point in the construction of cablestayed bridge,in the design and construction stage,it is necessary to combine the structural form and the mechanical characteristics of the bridge pylon,reasonably select the steel shell-concrete connection technology and the good performance concrete,reasonably set the steel-concrete combination section position,so as to improve the overall mechanical performance.Taking a cable-stayed bridge project as an example,this paper analyzes the technical types and key points of steel-concrete composite pylon construction,aiming at providing reference for similar projects.

关 键 词：大跨径斜拉桥 钢混组合索塔施工 关键技术 

分 类 号：X734[环境科学与工程—环境工程]