摘要
由于曲线梁桥的诸多优点,在城市建设中被越来越广泛采用。但由于弯扭耦合作用,所以曲线桥在竖向荷载作用下引起弯曲的同时会产生扭转变形,导致内外侧支座反力大小不同,甚至可能出现负反力,而我国现行相关技术规范和设计计算理论有待进一步研究和完善。结合重庆市立交桥的设计,阐述了小半径曲线梁桥的总体设计及设计要点,并总结了设计体会。
The curve beam bridge is more and more widely used in the city construction because of its many advantages. But owing to the lateral torsional coupling effect, the curve bridge will produce the torsion and deformation at the same time of causing the bending by the vertical load, which will result in the different interior and exterior support reactions, even possibly being the negative reaction. The current related technical specification and design calculation theory of China are to be further studied and perfected. According to the design of grade separations in Chongqing City, the article sets forth the master design and design gist of small-radius curve beam bridge and summarizes the design experience.
出处
《城市道桥与防洪》
2014年第6期127-129,共3页
Urban Roads Bridges & Flood Control
关键词
小半径
曲线梁桥
扭转变形
竖向荷载
设计
small radius,curve beam bridge,torsion and deformation,vertical load,design
