中承式空间Y形钢拱桥力学分析  

Mechanical Analysis of Spatial Y-shaped Half-through Steel Arch Bridge

作　　者：赵煜[1] 罗轩 张和 周勇军[1] ZHAO Yu;LUO Xuan;ZHANG He;ZHOU Yong-jun(School of Highway,Chang’an University,Xi’an 710064,China;Northwest Engineering Co.Ltd.,Xi’an 710000,China)

机构地区：[1]长安大学公路学院,西安710064 [2]中国电建集团西北勘察设计研究院有限公司,西安710000

出　　处：《科学技术与工程》2023年第6期2606-2611,共6页Science Technology and Engineering

基　　金：陕西省自然科学基金(2021JLM-47)。

摘　　要：异形拱桥作为景观桥可以很好满足人们的景观需求,但同时它的受力形式也复杂多样,为了研究某空间Y形拱桥在施工阶段以及成桥阶段的受力特点,采用有限元分析软件建立全桥的数值模型。在考虑结构所受强风荷载的基础上,主要研究了该结构在各个施工阶段以及成桥阶段关键部位的内力和应力,然后对结构进行动力和稳定性分析。结果表明:该桥所受风荷载作用效应较为显著,双拱侧拱脚因为倾角的原因弯矩值较大,结构的受力均满足规范要求。通过对该拱桥的相关力学行为分析,研究结论可以给未来类似结构的设计和施工提供参考。As a landscape bridge,the special-shaped arch bridge can well meet people s landscape needs,but at the same time its stress forms are also complex and diverse.In order to study the stress characteristics of a Y-shaped arch bridge in a certain space during the construction stage and the bridge completion stage,the numerical model of the whole bridge was established by using the finite element analysis software.On the basis of considering the strong wind load on the structure,the internal force and stress of the structure in each construction stage and the key part of the bridge completion stage were mainly studied,and then the dynamic and stability analysis of the structure was carried out.The results show that the bridge is subjected to significant wind load,the double-arch side arch foot has a larger bending moment due to the inclination angle,and the structural force meets the requirements of the code.By analyzing the relevant mechanical behavior of the arch bridge,the research conclusions can provide a reference for the design and construction of similar structures in the future.

关 键 词：桥梁工程 异形拱桥 施工过程 力学分析 风荷载 

分 类 号：U441[建筑科学—桥梁与隧道工程]