摘要
基于刚架拱桥的结构特点和传力机理,在分析某刚架拱桥典型病害的基础上,针对其横向联系薄弱、提载潜力小等问题,提出采用增大截面法对边拱肋进行加固补强、增设横向联系并辅以预应力技术加强桥梁横向联结的诊治方案,提高整体刚度。实桥荷载试验表明,该方案加固效果良好。为今后同类在役桥梁的维修加固设计提供参考和借鉴。
Based on the structural characteristics and force transfer mechanism of rigid frame arch bridge and the analysis of the typical disease of a rigid frame arch bridge, a reinforcement acheme including reinforcing the side arch rib t, adding lateral contact with prestressed technology to strengthen the treatment of bridge transverse connection and improving the overall stiffness by enlarging section method has been put forward to solve the problems of weak horizontal linkages and increasing load potential. The results show that the rein-forcement effect is good, which provides reference for the maintenance find reinforcement design of similar bridges in service in the future.
出处
《湖北理工学院学报》
2017年第3期56-58,共3页
Journal of Hubei Polytechnic University
关键词
刚架拱桥
增大截面
预应力技术
维修加固
rigid frame arch bridge
enlarged section
prestress technology
maintenance and reinforcement
