摘要
为研究多箱式小箱梁桥的横向应力分布规律,通过设置开展不同数量内横隔梁的小箱梁模型横向静力静载试验,测定不同工况下的横向应变,并结合梁格法及三维实体有限元分析等方法综合比对,验证各种方法应用于多箱式小箱梁横向受力分析的适用性。研究认为,增设内横梁对多箱式小箱梁横向受力的改善效果具有边际效应,可根据实际截面刚度大小综合考虑。
In order to study the lateral stress distribution law of the multi-box small box girder bridge,the lateral static load tests are carried out on small box girder models with different numbers of inner diaphragms to determine the lateral strain under different working conditions.In combination with the comprehensive comparison of the methods like grillage method,three-dimensional solid finite element analysis and so on,the applicability of various methods for the lateral stress analysis of multi-box small box girder is verified.The research shows that,the addition of internal crossgirder has a marginal effect on improving the lateral stress of the multi-box small box girder.It can be comprehensively considered based on the actual cross-sectional stiffness.
作者
许琮望
李新生
徐博闻
艾凌山
Xu Congwang;Li Xinsheng;Xu Bowen;Ai Lingshan(College of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China)
出处
《北方交通》
2024年第4期13-16,共4页
Northern Communications
关键词
小箱梁
横向受力
桥梁缩尺模型
有限元模拟
Small box girder
Lateral stress
Scale model of bridge
Finite element simulation
