摘要
针对使用多年且以重载交通为主的双曲拱桥,通过现场调查分析其主要病害,并采用有限元法验算桥梁承载能力。对承载能力不足的主拱圈截面,分别采用加大截面、粘贴钢板、加大横系梁等方法进行了加固,在有效提升结构承载能力的同时,还提高了结构的耐久性,为延长桥梁的服役寿命提供了保障。通过静动载试验及加固后超过1年的观察,桥梁运行状况良好,证明了所提出的加固方法的可行性和有效性。
Aiming at the hyperbolic arch bridge with heavy traffic over the years,the main damages were analyzed by field investigation,and the bearing capacity of the bridge was checked by the finite element method.For the main arch ring section lacking of bearing capacity,we could use the method of increasing section,pasting steel plate and increasing cross beam to reinforce.,These methods effectively enhanced the bearing capacity of the structure,and improved the durability of the structure,which can provide a guarantee to extend the bridge service life.Through the static and dynamic load test and the observation of the bridge over a year,the operation of the bridge is good,.The feasibility and effectiveness of the method proposed in this paper is proved.
出处
《交通科技》
2015年第4期17-20,共4页
Transportation Science & Technology
关键词
双曲拱桥
桥梁加固
截面加厚
粘钢
承载能力
hyperbolic arch bridge
bridge strengthening
cross section thickness
steel bearing capacity
