黄土山区桥梁下部水毁成因分析及处置研究

Research on Cause Analysis and Disposal of Water Damage in the Lower Part of Bridge in the Loess Mountain Area

水毁是黄土山区的主要病害之一,严重影响桥梁安全和行车安全。文章以繁大高速公路西岔沟1号、2号大桥水毁为研究案例,通过现场踏勘,分析了两座桥的水毁成因,提出挡土墙+草袋护坡防护坡面+设置桥梁纵向集中排水设施的处置方案,确保桥梁结构安全。研究可为类似工程项目提供一定参考。

Water damage is one of the main diseases in the loess mountain area,which seriously affects the safety of bridges and traffic.Taking the water damage of No.1 and No.2 bridges over the Xicha gully of Fanda expressway as the research case,the causes of water damage of the two bridges are analyzed through on-site investigation,and the disposal schemes for retaining wall+straw bag slope protection surface+longitudinal centralized drainage facilities of the bridge are put forward,so as to ensure the safety of the bridge structure.The research can provide some reference for similar engineering projects.