独柱墩桥梁横向抗倾覆性影响因素研究  

Research on the Influencing Factors of Lateral Overturning Resistance of Single Column Pier Bridge

作　　者：安海涛 An Haitao(Ruizhi Transportation Technology Consulting Co.,Ltd of Hebei Transportation Planning Institute,Shijiazhuang 050091,China)

机构地区：[1]河北交规院瑞志交通技术咨询有限公司,石家庄市050091

出　　处：《北方交通》2024年第3期18-21,共4页Northern Communications

摘　　要：基于8.5m、9.5m、10.5m三种箱梁宽度,采用有限元软件,以梁端支座间距与梁宽之比作为自变量,研究其对独柱墩桥梁横向抗倾覆性的影响。通过纵向研究以及横向对比分析发现,当梁宽确定时,随着梁端支座间距与梁宽之比的增大,最小支座反力呈曲线增大,横向抗倾覆稳定系数呈线性增大;梁端支座间距与梁宽之比大于0.6时,横向抗倾覆性基本满足;梁端支座间距与梁宽之比确定时,随着梁宽的增加,最小支座反力随之增大。实际工程中,可适当增大梁端支座间距与梁宽之比来提高梁体的抗倾覆性能。Based on three types of box beam widths of 8.5m,9.5m and 10.5m,the finite element software is used to study its influence on the lateral overturning resistance of single column pier bridge by taking the ratio of beam end support spacing to beam width as the independent variable.Through the longitudinal research and horizontal comparative analysis,it is found that when the beam width is determined,the minimum support reaction force increases in a curve with the increase of the ratio of beam end support spacing to beam width,and the lateral overturning stability coefficient increases linearly;when the ratio of beam end support spacing to beam width is greater than 0.6,the lateral overturning resistance is basically satisfied;when the ratio of beam end support spacing to beam width is determined,the minimum support reaction force increases with the increase of the beam width.In practical engineering,the ratio of beam end support spacing to beam width can be appropriately increased to improve the overturning resistance of the beam.

关 键 词：独柱墩 横向抗倾覆系数 梁端支座间距 梁宽 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]