互通立交匝道桥设计方案优化与应用研究  

Optimization and Application Research of Interchange Ramp Bridge Design Scheme

作　　者：陈君翔 

机构地区：[1]广西交科集团有限公司,广西南宁530007

出　　处：《大众科技》2023年第7期37-40,共4页Popular Science & Technology

摘　　要：文章针对互通式立交工程总体设计方案及匝道桥工程特点,阐述了匝道曲线梁桥方案设计技术,着重分析了小半径匝道曲线梁受力与变形对立交桥梁结构设计成果的影响,提出了在线形受限而必须采用小半径曲线梁时,获得有利于桥梁结构发挥力学性能的线形要素,并经过分析与对比,探究匝道小半径曲线梁桥结构设计参数的优化区间,获得互通式立交匝道设计方案的优化方法。结果表明,互通式立交匝道曲线桥设计必须因地制宜,尽量采用半径较大的平面线形和合理的结构形式,提高施工便利性,保证行车安全。The article elaborates on the overall design scheme of interchange engineering and the characteristics of ramp bridge engineering, and elaborates on the design technology of ramp curve beam bridge scheme. It focuses on analyzing the influence of small radius ramp curve beam stress and deformation on the design results of interchange bridge structure. It proposes that when the linear shape is limited and small radius curve beam is necessary, linear elements that are conducive to the mechanical performance of the bridge structure can be obtained. Through analysis and comparison, the optimization interval of structural design parameters of ramp small radius curved beam bridge is explored, and the optimization method of the design scheme of interchange interchange ramp is obtained. The results show that the design of interchange ramp curve bridge must adapt to local conditions, and try to adopt the plane alignment with larger radius and reasonable structure form to improve the construction convenience and ensure traffic safety.

关 键 词：互通立交 匝道桥 设计方案 优化研究 

分 类 号：U442[建筑科学—桥梁与隧道工程]