整体式组合梁桥梁台结合部模型试验研究
Model Experimental Research of the Joint Between Integral Abutment and Composite Beam
卫少阳 1邬晓光 2陶甫先3
作者信息
- 1. 杨凌职业技术学院,陕西 杨凌 712100
- 2. 长安大学,西安 710064
- 3. 西安公路勘察设计院有限公司,西安 710005
- 折叠
摘要
整体式桥台桥梁免除了伸缩缝的建造费用以及病害和更换问题.为研究整体式钢-混组合梁桥梁台结合部力学性能,本文提出压剪式,腹板式和插入式3种结合部构造形式,进行静力加载模型试验,考虑弯矩最不利和剪力最不利2种工况,对结合部位移和相对滑移数据进行测试.模型试验结果表明:压剪式试件承载力最大,相对转动刚度最大,荷载位移关系和弯矩转角关系线性段最长,结合性能最优.研究结果可为整体式组合梁桥梁台结合部的设计和研究提供参考和借鉴.
Abstract
Integral bridges eliminate the cost of construction of expansion joints as well as problems of disease and re-placement.In order to study the mechanical properties of the joint between integral abutment and composite beam,three structural forms of the joints are proposed in this paper:compression-shear type,web-structure type and plug-in type.Static loading model experiments were carried out on the three joint structures,and the joint displacement and relative slip data were tested considering the most unfavorable bending moment and the most unfavorable shear condi-tions.The model experiment results show that the compression-shear type specimen has the largest bearing capacity,the largest relative rotational stiffness,the longest linear segment of the load-displacement relationship and the bend-ing moment-rotation angle relationship,and the best combination performance.The research results can provide refer-ence for the design and research of the joint between integral abutment and composite beam.
关键词
整体式组合桥梁/梁台结合部/模型试验/力学性能Key words
integral composite bridge/abutment-steel beam joint/model experiment/mechanical properties引用本文复制引用
基金项目
陕西省交通厅科研项目(18-19T)
杨凌职业技术学院科技创新项目(ZK22-26)
出版年
2024
NETL
NSTL
万方数据