大跨度预应力混凝土连续刚构桥设计参数分析

摘要

In order to study rational design parameter value scope of continuous prestressed steel bridge,taking the large-span prestressed con-crete steel bridge as the engineering example,through establishing various numerical models,the paper studies bottom curve shape of continuous steel bridge,major beam support span ratio,medium span ratio,vertical prestressed forms,major pier rigidity and other parameter value,rela-tionship of major beam stress and its alteration law,and finally obtains some valuable conclusions.%为研究预应力连续刚构桥主要设计参数的合理取值范围，以某大跨度预应力混凝土连续刚构桥为工程实例，通过建立不同的数值模型，研究连续刚构桥梁底曲线形式、主梁支点高跨比、跨中高跨比、纵向预应力形式及主墩刚度等参数取值与主梁受力间的关系及其变化规律，最终得出了一些有价值的结论。