高墩大跨度连续刚构桥结构设计——以桑龙高速公路为例  

The Structural Design of High-Pier Long-Span Continuous Rigid Frame Bridge:A Case of Sanglong Expressway

作　　者：吴晓如 Wu Xiaoru

机构地区：[1]中铁路安工程咨询有限公司

出　　处：《城市建筑》2024年第10期193-195,共3页Urbanism and Architecture

摘　　要：预应力混凝土连续刚构桥采用墩梁固结、梁体连续的结构形式,具有很强的顺桥向抗弯刚度以及横向抗扭刚度,能够满足大跨度桥梁的受力需求,在山区高墩情况下有很大的应用优势。文章以桑龙高速公路李家沟大桥为例,以有限元软件建立结构模型,分析高墩大跨度连续刚构桥结构特点及受力特征,系统介绍了高墩大跨连续刚构桥的总体设计及结构计算要点,可为同类型桥梁设计提供参考。The prestressed concrete continuous rigid frame bridge adopts a structural form of rigid connection between pier and beam with continuous beams,which has significant longitudinal bending stiffness and lateral torsional stiffness.It can meet the stress requirements of long-span bridges and has great application advantages in mountainous areas with high piers.Taking Lijiagou Bridge on Sanglong Expressway as an example,this paper establishes a structural model with finite element software to analyze the structural characteristics and stress features of high-pier long-span continuous rigid frame bridges.It systematically introduces the overall design and key structural calculation points of high-pier long-span continuous rigid frame bridges,providing a reference for the design of similar bridges.

关 键 词：高墩 大跨度 连续刚构 总体设计 结构计算 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]