混凝土桥梁的病害机理及维修加固措施研究

Damage Analysis and Reinforcement Technique Study of Concrete Bridges

由于车辆和外界环境因素的作用和影响,混凝土桥梁经过长期运营后,会产生多种病害,出现各种缺陷,严重影响桥梁正常使用.针对混凝土桥梁的特点,分析总结出该类型桥梁的主要常见病害类型,并讨论了病害产生的原因,进而提出了具有针对性的、切实可行的维修加固措施.以一实际公路梁桥为工程背景,介绍了其主要病害类型,分析了病害产生的原因,并提出了裂缝修补、锈蚀钢筋修补、横系梁加固、翼缘板接头加固和粘贴碳纤维布加固主梁的维修加固措施.通过理论分析结果和加固前实测数据的对比,说明文中提出的维修加固方法具有良好的加固效果,对同类其他桥梁的维修加固具有重要的借鉴意义.

Damages and faults of concrete bridges would be generated because of the action and influence by vehicle and outer environment,and the normal usage of bridge was threatened greatly. The main common damages of this kind of bridge are summarized, and then damages causes are pointed out, reinforcement measures of bridge are studied based on structure characteristic and damage features,and they are applied to bridge structure based on an existing bridge. After the comparison between the theoretical results of the core mechanical parameters of the concrete bridge and the experiment data, the reinforcement measure to the bridge is showed to be effective,and it has important effect to other bridges of this kind.