大连理工大学学报Issue(2)：152-156,5.DOI:10.7511/dllgxb201502005
连续梁拱组合体系桥侧倾稳定实用计算
Practical approach for lateral stability calculation of continuous beam-arch hybrid bridge
摘要
Abstract
The lateral buckling of single-plane continuous beam parabolic arch hybrid bridge subjected to a uniform vertical load is investigated.Based on energy principle,a practical formula is devised and also the influence coefficient of side span is proposed for the first time.The proposed practical formula is verified by comparing the analytical solutions with the finite element results.It is concluded that the simple and accurate practical formula proposed by taking into account the effects of comprehensive aspects can provide references and assistance for a better design of the similar type bridge.Moreover, a detailed parametric study shows that the side span has significant effect on the lateral stability and increasing the length of side span can further enhance the lateral stability within a reasonable side-main-span ratio.关键词
连续梁拱组合体系桥/抛物线单肋拱/侧倾稳定/实用计算/边跨效应Key words
continuous beam-arch hybrid bridge/parabolic single rib arch/lateral stability/practical calculation/side span effect分类
交通工程引用本文复制引用
许斐,张哲,王德慧,朱巍志..连续梁拱组合体系桥侧倾稳定实用计算[J].大连理工大学学报,2015,(2):152-156,5.基金项目
国家自然科学基金资助项目(51008047) （51008047）
