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文章主要介绍高速公路改扩建中,桥涵拼接设计需要解决的关键技术问题。从桥涵拼宽设计基础资料收集,桥梁跨径、拼接模式、净空问题、施工组织、拼接设计方案、细部结构设计等方面提出了系统的设计思路。对高速公路改扩建中拼宽构造物平、纵面控制,以及常见的板式结构、组合工字梁及T梁结构、现浇连续箱梁结构等三种桥梁上部结构的拼接方案提出了处理对策。
This article mainly introduces the key technical problems that need to be solved in the design of bridges and culverts in the reconstruction and extension of expressways. The systematic design ideas are put forward from the aspects of data collection of bridge and culvert width design, bridge span, splicing pattern, clearance problem, construction organization, splicing design scheme and detailed structural design. This paper puts forward some countermeasures for the splicing scheme of three types of bridge superstructure, such as flat structure and longitudinal control, as well as the common plate structure, combined I-beam and T-beam structure, cast-in-place continuous box girder structure .