摘要
以某高速公路互通式立交匝道桥3×25m连续组合箱梁拼宽桥为例,对拼宽桥既有桥梁进行承载能力验算及加固设计,通过既有桥梁(后简称旧桥)的加固设计计算能清晰了解各个构件的承载能力,只针对承载力不满足规范要求的构件进行加固,能最大限度提高经济效益,可为同类工程提供参考。
Taking a 3 × 25m continuous composite box girder widening bridge of a ramp bridge of an expressway interchangeas the example,the checking calculation on the bearing capacity and reinforcement design of the existing bridge of the widening bridge are carried out.The bearing capacity of various components can be clearly understood through the reinforcement design calculation of the existing bridge( hereinafter referred to as the old bridge).The reinforcement is only carried out for the components whose bearing capacity does not meet the specification requirements,which can maximize the economic benefits and provide reference for similar projects.
作者
姚云
Yao Yun(JSTI Group Co.,Ltd.,Nangjing 210000,China)
出处
《北方交通》
2022年第9期32-34,共3页
Northern Communications
关键词
拼宽桥
既有桥梁
承载能力验算
加固设计
Widening bridge
Existing bridge
Checking calculation on the bearing capacity
Reinforcement design
