公路旧桥加宽纵缝拼接技术进展

摘要

总结公路旧桥加宽纵缝拼接技术,对比分析各种纵缝拼接技术的优缺点和适用条件,重点阐述、分析空心板梁桥纵缝拼接构造处理方案,并探讨纵缝破损的主要机制,提出旧桥加宽纵缝拼接技术的改进措施.%This paper summarizes longitudinal joints splicing techniques for widening old highway bridges, analyzes advantages and disadvantages and applicable conditions of various longitudinal joints splicing techniques in comparison, emphasizes on expatiation and analysis of treatment schemes for longitudinal joints splicing structures of hollow slab bridges, probes into major mechanisms of damages of longitudinal joints, and proposes improvement measures for longitudinal joints splicing techniques for widening old bridges.