Frame Arch has fewer components,light weight,material saving,beautiful appearance,high degree of assembly and low cost,is widely used in small and medium bridges. With the rapid eco-nomic development,increasing road traffic,when the previous frame design theory arch design is still not perfect,this type of bridge under heavy load bridge is prone to cause disease decreased the carry-ing capacity of the bridge,gradually to evolve It is a dangerous bridge. Without early action,it might evolve into a bridge failure,resulting in a casualty has occurred. To evaluate the dynamic properties of such a bridge structure to a rigid frame arch bridge both for the study,the use of beam grid equiv-alence principle, to carry out rigid frame arch bridge power grid model behavior and applied re-search,in order to further reduce the loss early to predict great important theoretical and practical guidance.%刚架拱桥具有构件少、自重轻、材料节省、外形美观、装配化程度高、造价低等优点，被广泛应用于中小型桥梁。随着社会经济快速发展，道路交通流量不断增加，以往设计时候的刚架拱桥的设计理论还不够完善，该类型桥梁在重荷载作用下很容易出现桥梁横向联结系破坏，易引发桥梁的稳定性问题，继而逐渐引发为桥梁的安全性问题。若对该现象不予以重视，不及时采取合适的措施解决，可能会引发桥梁安全事故的发生。以某刚架拱桥为研究对象，采用梁格法中的梁单元对拱片进行等效处理，通过有限元模拟和实际桥梁动力测试相结合的发放，来研究和评估刚架拱桥的动力特性，这对于刚架拱桥的动力力学行为研究具有较为重要的理论指导作用。
展开▼
