混凝土箱梁与钢-UHPC组合箱梁结合段缩尺模型研究
Study on Scale Model of the Joint Section of Concrete Box Girder and Steel-UHPC Composite Box Girder
邓晓光 1李制峰 1刘沐宇 1冯鹏程 2刘新华2
作者信息
- 1. 武汉理工大学土木工程与建筑学院,武汉 430070;武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉 430070
- 2. 中交第二公路勘察设计研究院有限公司,武汉 430056
- 折叠
摘要
以某主跨1160 m混合式组合梁斜拉桥为工程背景,以混凝土箱梁与钢-UHPC组合箱梁结合段为研究对象,采用相似理论,以应力相等和实桥相同材料为原则,结合结构对称性,设计了结合段相似比为1∶4半幅截面缩尺模型试验方案.在此基础上,以加载工况荷载为依据设计了缩尺模型的自平衡加载装置,并通过ABAQUS有限元模型分析验证了加载装置的可靠性与结合段设计的合理性,为缩尺模型试验提供了计算和设计依据.
Abstract
A hybrid composite girder cable-stayed bridge with a main span of 1 160 m was taken as the engineering background,and the joint section of concrete box girder and steel-UHPC composite box girder was taken as the research object.Based on similarity theory,according to the principle of equal stress and the same material of the real bridge,a half-section scale model test scheme with a similarity ratio of 1∶4 was designed considering the structural symmetry.On this basis,the self-balanced loading device of the scale model was designed based on the loading conditions.The reliability of the loading device and the rationality of the design of the joint section were verified by ABAQUS finite element model a-nalysis,which provided the calculation and design basis for the scale model test.
关键词
混凝土箱梁与钢-UHPC组合箱梁结合段/缩尺模型试验/相似理论/有限元模型分析Key words
joint section of concrete box girder and steel-UHPC composite box girder/scale model test/similarity theory/finite element model analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据