摘要
基于公铁合建双层桥墩受力特点,结合工程实例,提出了公铁合建双层桥墩的计算思路。通过对桥墩的有限元模拟计算分析,表明公路花瓶墩可按墩底固结边界条件处理,其顶部需配置钢筋来抵抗较大横向拉应力;铁路门式墩采用双支点模型,计算结果更接近盖梁的实际受力情况。
Based on forced characteristics of the Double-deck Piers for Rail-cum-road Bridge,combined with the engineering case,the calculation concept was proposed.Through the finite element simulation analysis of piers,the design method for practical engineering was summed up.The results show that the boundary conditions of highway vase piers can be treated by the rigid connection,and reinforcement at the top of piers should be arranged to resist the large transverse tensile stress.The double support calculation model can be applied to railway portal piers,and it is near to the force behavior of the cap beam.
出处
《交通科技》
2016年第3期47-50,共4页
Transportation Science & Technology
关键词
公铁合建双层桥墩
有限元法
计算分析
double-deck piers for rail-cum-road bridge
finite element method
calculation and analysis
