多跨连续斜靠式异型拱桥的设计与稳定分析

斜靠式异型拱桥是一种新型的、特点鲜明的空间组合结构体系，以韩江北桥为例，介绍了多跨连续斜靠式异型拱桥桥型的设计与布置，分析了桥梁结构的体系特点，通过平面和空间的静力计算，表明全桥结构设计受力合理，拱截面、吊杆、系杆、V撑箱梁混凝土应力储备适中，各跨住移均满足规范要求；主桥动力结构分析计算A，B，C三跨结构面内、外刚度接近，对第1阶失稳模态求解临界荷载比例因子计算结果为稳定系数均大于5，结构发生一类失稳的可能性较小，空间稳定性亦满足要求．

The Design and Stability Analysis of Continuously Multi - span Slanting Arched Bridge

Slanting heterogeneous type arched bridge is a new type of space composite structure system with specific characteristics.this paper takes the HanJiang bridge as an example,introduces the continuously multi-spans slanting arched bridge design and the arrangement continuously, analyzes the bridge structure system characteristic,through the plane and the spatial static computation,indicates entire bridge structural design stress reasonable,arches the section,the suspension link,the tie bar,box beam,supports the concrete storage stress reserve to be moderate,each cross displacement satisfies the norm requirements;The main span power structure analysis calculates A,B,C three cross structure plane,outside the rigidity approaches,loses the steady modality to the 1st step to solve the critical load proportionality factor computed result to be bigger than 5 for the stability coefficient,the structure has a kind to lose the steady possibility to be small,and the spatial stability also meets the demands.