摘要
在用钢-混凝土组合梁加宽混凝土梁桥时,计算了加宽后的混凝土梁桥横向分布系数。在刚接梁法基础上,考虑了组合梁与原桥主梁刚度、间距差异,建立了修正的刚接梁计算方法。研究了刚性横梁法在新加宽后的桥梁中的适用范围,考虑了组合梁和新横梁的条件。用MSC.Marc有限元软件模型、修正的刚接梁法、刚性横梁法进行计算。用这几种方法对加宽后的混凝土梁桥横向分布系数计算结果,均与桥梁实测结果吻合良好。
The transverse distribution coefficient was calculated for an old concrete bridge widened with steel-concrete composite beams.A modified method was developed based on the rigid-jointed girder method considering the different main girder stiffnesses and the space between the original bridge and the widened bridges.The applicability of the rigid transverse beam method to the bridge after widening was investigated,as well as the applicable conditions for the composite beams and the new joints.The results using the rigid transverse beam method and the modified rigid-jointed girder method were compared with a model in the MSC.Marc finite element software.All the predicted results agree well with bridge field tests.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第6期805-809,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(50578084)
长江学者和创新团队发展计划资助项目(IRT00736)
关键词
桥梁加宽
钢-混凝土组合梁
横向分布系数
刚度
bridge widening
steel-concrete composite beams
transverse distribution coefficient
stiffness
