摘要
结合四川省石梯大桥的拱上建筑加固改造施工,考虑施工工作面、通行及桥墩刚度等影响因素,提出3种拱上建筑加固施工方法,并对3种加固施工方法用Midas/Civil2010软件进行有限元模拟分析。分析结果表明,当多跨石拱桥在拱墩抗推刚度比大于38时,可利用制动墩,采用半桥半幅施工方法进行加固。
In combination with construction of reinforcing and renovating spandrel structures of Shiti Bridge in Sichuan Province and in consideration of influencing factors such as construction working faces,passage and pier stiffness,etc.,this paper proposes three construction methods for reinforcement of spandrel structures,and performs finite element simulation analysis with Midas/Civil2010 software.The results of analysis show that when anti-pushing rigidity ratio of arch piers in multi-span arch bridges is greater than 38,the half-bridge-half-range construction method can be adopted for reinforcement by means of braking piers.
出处
《公路交通技术》
2013年第3期121-124,129,共5页
Technology of Highway and Transport
关键词
多跨石拱桥
加固施工
桥墩刚度
施工方法
multi-span arch bridge
reinforced construction
pier stiffness
construction method
