大跨度异形曲线连续刚构桥的设计研究  

Design&Research on Large-Span Irregular Curve Continuous Rigid Frame Bridge

作　　者：李扬帆 LI Yang-fan(Tongji University Architectural Design&Research InstituteCo.,Ltd.,Shanghai 200092,China)

机构地区：[1]同济大学建筑设计研究院(集团)有限公司,上海200092

出　　处：《中国市政工程》2024年第1期6-9,149,共5页China Municipal Engineering

摘　　要：以贵州贵御温泉大桥为例,针对连续刚构桥异形曲线的特点,介绍(80+145+80)m大跨度异形曲线连续刚构桥的总体设计,提出通过调整腹板及底板厚度来控制平衡重的设计方法,进行合理的构造和配束设计。建立3D模型,进行静力、屈曲稳定及动力特性分析。研究表明,桥梁的弯扭耦合效应较小,变形和应力均处于合理范围;屈曲稳定性较好,变宽段的稳定性比等宽段稍差;动力特性以纵飘和横弯为主。桥梁设计合理,满足规范要求,可为同类桥梁设计提供参考。Taking GuizhouGuiyuWenquan Bridge as an example,it introduces the overall design of(80+145+80)m large-span irregular curve continuous rigid frame bridge based on the characteristics of the irregular curve of the continuous rigid frame bridge.It proposes a design method to control the balance weight by adjusting the thickness of the web plate and bottom plate,and carries out reasonable construction and reinforcement design.Establish a 3D model for static,buckling stability,and dynamic characteristic analysis.Research has shown that the bending torsion coupling effect of bridges is relatively small,and both deformation and stress are within a reasonable range.The buckling stability is good,but the stability of the widened section is slightly worse than that of the equal width section.The power characteristics are mainly longitudinal drift and lateral bending.The bridge design is reasonable and meets the regulatory requirements,which can provide reference for similar bridge designs.

关 键 词：连续刚构桥 大跨度 曲线 异形 设计方法 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]