摘要
从受压柱刚度激活程度出发,研究了轴力面积大小对非规则双层双柱式高墩桥梁体系临界力的影响,并找到了一些规律,建立了相应的双柱式高墩桥梁横桥向临界承载力的计算方法,使得双柱式高墩桥梁临界力的求解大为简化。推导了双柱式高墩桥梁横桥向结构临界力的计算公式,这些公式能考虑柱墩之间系梁的影响,弥补规范计算长度系数法的不足,为桥梁工程设计提供了快速计算的方法和公式。最后,选取了3个算例进行有限元计算验证,计算结果表明:该方法具有很好的精度及准确性,适用于任意节点荷载分布,可供工程设计和理论计算使用。
Based on the stiffness activation of the compression column,the influence of the axial force area on the critical bearing capacity of double column pier with two-story is studied.Some rules are found and the corresponding calculation method of the horizontal critical bearing capacity of double column bridge with high piers is established,so that the solution of the critical force of column bridge with high piers is greatly simplified.This paper deduces the calculation formula of the horizontal critical force for double column bridge with high piers.These formulas can take into account the influence of the tie beams between the piers,which can make up for the deficiency of the standardized calculation length coefficient method and provide a fast calculation method and formula for bridge engineering design.Finally,three examples are selected for finite element calculation.The calculation results show that this method has good precision and accuracy,which can be suitable for arbitrary node load distribution and used for engineering design and theoretical calculation.
作者
兰树伟
周东华
陈旭
莫南明
LAN Shu-wei;ZHOU Dong-hua;CHEN Xu;MO Nan-ming(College of Architecture and Civil Engineering,Kunming University,Kunming 650214,China;Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2023年第4期1105-1111,共7页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(51868034)
云南省地方本科高校基础研究联合专项资金青年项目(202101BA070001-003)
昆明学院引进人才科研项目(XJ20210029)。
关键词
桥梁工程
双柱式高墩
轴力面积比
整体稳定
临界力
计算长度系数
bridge engineering
double column pier
axial force area ratio
overall stability
critical force
calculating length coefficient
