【摘要】 独柱支撑的连续梁倾覆事故近年来频发,引起工程设计人员的重视。在编制GB 50917—2013《钢-混凝土组合桥梁设计规范》时,对独柱连续梁的倾覆问题展开专项研究,并在规范中率先提出采用限制梁体横向转角的方式控制桥梁的倾覆。以此为背景,通过对国内桥梁倾覆事故的分析,揭示独柱连续梁的倾覆机理,提出避免发生桥梁倾覆的设计规定;根据独柱连续梁的倾覆机理,结合不同的实际情况,提出相应的加固技术;最后介绍桥梁倾覆加固技术在上海某高架桥加固工程中的应用情况。更多还原

【Abstract】 In recent years,continuous beam bridge with single column pier overturned frequently,and it has attracted the great attention of engineering designers.Special research is carried out on the overturning problem of continuous beam bridge with single column pier,when GB 50917-2013 The Code for Design of Steel and Concrete Composite Bridges was drafted,and design stipulations by limit the angle of the transverse rotation to avoid overturning was proposed firstly in the code.Based on this background,the overturning mechanism of continuous beam bridge with single column pier was revealed through the analysis of the domestic bridge overturned accidents firstly,and design stipulations for the design of bridge was proposed to avoid overturned accidents;Then,according to overturning mechanism of continuous beam bridge with single column pier,reinforcement technology combined with actual conditions was put forward.Finally,the application of the reinforcement technology in a viaduct in Shanghai was introduced.更多还原