公路改扩建工程桥梁拓宽拼接技术方案比选

公路改扩建工程中旧桥的拓宽将会带来新旧桥梁结构的连接和变形等复杂问题,因此新旧桥梁拼接技术方案的比选尤为重要.通过对新旧桥梁不同的连接方式、常见梁板式桥拓宽方案进行分析比较,推荐了拼接技术优化方案,介绍了常见梁板式桥拓宽拼接施工工艺,并提出了新旧桥梁结合部位纵向裂缝的有效防治措施,以供同类工程参考借鉴.

Comparison of Bridge Broadening Splicing Technology Scheme in Highway Reconstruction and Extension Project

Old bridge broadening will bring complicated problems such as connection and deformation of new and old bridges. Therefore the comparison of splicing technology schemes of old and new bridges is particularly important. By reviewing various connection methods of old and new bridges as well as the broadening schemes of common beam-slab bridge, this paper recommends splicing technology optimization scheme, introduces the splicing construction technology of common beam-slab bridge broadening, and puts forward effective prevention and control measures of the longitudinal crack at the joint of new and old bridges, which has a certain reference significance to similar projects.