小铰缝空心板梁桥动力响应研究  

Research on Dynamic Response of Hollow Slab Girder Bridge with Small Hinge Joint

作　　者：张德铭 徐跃 李尚 Zhang Deming;Xu Yue;Li Shang(College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China;Xi’an Jiaotong University,Xi’an 710049,China;Zhejiang Zhejiao Testing Technology Co.,Ltd.,Hangzhou 310030,China)

机构地区：[1]浙江工业大学土木工程学院,杭州市310023 [2]西安交通大学,西安市710049 [3]浙江浙交检测技术有限公司,杭州市310030

出　　处：《北方交通》2024年第9期8-12,共5页Northern Communications

摘　　要：为研究小铰缝空心板梁桥结构动力响应的影响因素,选取某座30m跨径的斜交空心板梁桥为工程案例进行分析。采用Abaqus有限元软件建立有限元模型,对比分析了不同桥梁斜交角度及有无护栏和护栏分缝的工况对空心板梁桥位移动力特性的影响。结果表明:不同桥梁斜交角度对空心板梁桥位移动力响应存在影响,结构动挠度并未与桥梁斜交角度呈现明显的线性关系,而是出现先增后减的趋势。同时,结构有无护栏和护栏分缝均对其动位移产生影响,无护栏时桥梁动位移最大;护栏分缝模型比护栏完整模型的动挠度更大,但影响较小。In order to study the influencing factors of the structural dynamic response of the hollow slab girder bridge with small hinge joint,the analysis is made by selecting a 30m span oblique crossing hollow slab girder bridge as the engineering case.The finite element model is established by using Abaqus finite element software,and the effects of different oblique crossing angles of bridges and the working conditions of bridges with and without guardrails and guardrail joints on the dynamic characteristics of hollow slab girder bridge displacement are compared and analyzed.The results show that:different oblique crossing angles of bridges have effects on the dynamic response of the hollow slab girder bridge displacement,and the structural dynamic deflection does not show an obvious linear relationship with the oblique crossing angle of the bridge,but increases first and then decreases.At the same time,the structure with and without guardrails and guardrail joints has effects on its dynamic displacement,and the dynamic displacement of the bridge without guardrails is the largest.The dynamic deflection of the structure with the guardrail joint model is larger than that with complete guardrail model,but with less effect.

关 键 词：空心板梁桥 斜交角度 混凝土护栏 动力响应 动挠度 

分 类 号：U441[建筑科学—桥梁与隧道工程]