钢混混合连续梁桥总体方案设计  

Overall Scheme Design of Steel-Concrete Hybrid Continuous Girder Bridge

作　　者：蒋逢炜 邓达 JIANG Fengwei;DENG Da(China Highway Engineering Consulting Group Co.,Ltd.,Beijing 100048)

机构地区：[1]中国公路工程咨询集团有限公司,北京100048

出　　处：《广东公路交通》2022年第2期23-27,共5页Guangdong Highway Communications

摘　　要：在大跨径梁桥设计中,PC连续刚构桥无疑是方案设计的首选。但如果桥梁高度较矮,建设条件有一定限制时,选择刚构方案就不再适合。结合济商高速公路新万福河大桥主桥方案设计,总结国内大跨径梁桥的发展现状及适用条件,提出了钢混混合连续梁桥方案,从受力性能、施工难度、景观效果、后期管养便利性及经济性等方面与PC矮塔斜拉桥进行多维度对比。结果显示,钢混混合连续梁桥在该条件下具有良好的竞争力,该桥型也将为同类桥梁建设提供借鉴。In the design of long-span girder bridges, PC continuous rigid-frame bridges are undoubtedly the first choice for scheme design. However, if the height of the bridge is short and the construction conditions are limited, the rigid frame scheme is no longer suitable. Being combined with the design of the main bridge of Xinwanfuhe Bridge of Jishang Expressway, the development status and applicable conditions of domestic long-span girder bridges have been summed up and the steel-concrete hybrid continuous girder scheme has been proposed. A multi-dimensional comparison has been made with the PC low tower cable-stayed bridge in terms of maintenance convenience and economy. The results have shown that the steel-concrete hybrid continuous girder bridge has good competitiveness under this condition, and this bridge type will also provide a reference for the construction of similar bridges.

关 键 词：大跨度梁桥 桥梁方案设计 钢混混合连续梁桥 PC矮塔斜拉桥 方案比选 

分 类 号：U442.54[建筑科学—桥梁与隧道工程]