钢筋混凝土刚架拱桥荷载横向分布系数数值分析研究  

The Numerical Analysis of the Transverse Load Distribution Coefficient of Reinforced Concrete Rigid-frame Arch Bridge

作　　者：李松辉[1] 李冲[1] 李镇[1] 

机构地区：[1]山东科技大学土木建筑学院,山东青岛266510

出　　处：《山东科技大学学报（自然科学版）》2010年第3期32-36,共5页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：山东省自然科学基金项目(Y2007F58)

摘　　要：为研究横向联系强弱对钢筋混凝土刚架拱桥整体受力性能的影响,利用空间有限元分析软件建立整体模型,分析了4种不同跨度的刚架拱桥,研究横向刚度对刚架拱桥荷载横向分布系数的影响规律,并与传统弹性支承连续梁法的计算值进行对比。结果表明,按弹性支承连续梁法计算的荷载横向分布系数普遍偏小;横向刚度直接关系到荷载横向分布的大小,传统的设计理论与桥梁结构实际的受力存在严重差距,在设计时应予以注意。To study the effect of stiffness of transverse joint on the mechanical behavior of reinforced concrete rigidframe arch bridge,an integral model was set up by using the spacial finite element analysis software,3 different span rigid frame arch bridges were analyzed and the influence of transverse load distribution coefficients on different horizontal stiffness was studied. Compared with the results of elastically supported continuous beam, it shows that the transverse load distribution coefficient is smaller;also,the transverse stiffness is directly related to the magnitude of transverse load distribution of the bridge and a serious difference of the forces calculated with traditional design theory or borne by actual bridge structure exists,which should be modified in the design.

关 键 词：刚架拱桥 弹性支承连续梁 刚度 荷载横向分布系数 

分 类 号：U446[建筑科学—桥梁与隧道工程]