空心板桥跨中横向分布系数分析  

Analysis of Transverse Distribution Coefficient in Span of Hollow Slab Bridge

作　　者：李波 汪贤安 冯小东 李雪浩 姚丽 LI Bo;WANG Xian’an;FENG Xiaodong;LI Xuehao;YAO Li(Shanxi Jin-Yang Expressway Reconstruction and Extension Project Management Co.,Ltd.,Jincheng 048000,Shanxi,China;Shanxi Transportation Technology Research&Development Co.,Ltd.,Taiyuan 030032,China;Shanxi Transport Planning Survey Design Institute Co.,Ltd.,Taiyuan 030012,China;Shanxi Urban and Rural Planning Design Institute Co.,Ltd.,Taiyuan 030001,China)

机构地区：[1]山西晋阳高速改扩建项目管理有限公司,山西晋城048000 [2]山西省交通科技研发有限公司,太原030032 [3]山西省交通规划勘察设计研究院有限公司,太原030012 [4]山西省城乡规划设计研究院有限公司,太原030001

出　　处：《科技和产业》2024年第19期319-323,共5页Science Technology and Industry

基　　金：山西交控集团科技创新项目(2022-JKKJ-5)。

摘　　要：为探索空心板桥横向分布系数的变化规律及影响因素,采用有限元分析软件Midas Civil 2020建立空心板桥的有限元模型,研究宽跨比及斜交角对装配式空心板桥横向分布系数的影响。结果表明:车辆荷载作用下,随着空心板桥宽跨比的增大,各板横向分布系数整体减小,车辆荷载作用的偏载侧板的横向分布系数变化较非偏载侧平缓;随着斜交角的变大,偏载侧板横向分布系数变大,非偏载侧板的横向分布系数变小;空心板桥斜交角不大于20°时,偏载侧各板横向分布系数增量均小于5%,在实际工程中可近似忽略,超过30°时对荷载分配影响较大,分析时不可忽略。In order to explore the variation rule and influencing factors of the transverse distribution coefficient of hollow slab bridge,the finite element model of hollow slab bridge was established by using the finite element analysis software Midas Civil 2020,and the influence of wide span ratio and oblique angle on the transverse distribution coefficient of fabricated hollow slab bridge was studied.The results show that the transverse distribution coefficient of hollow slab bridge decreases with the increase of width-span ratio under vehicle load,and the transverse distribution coefficient of partial slab under vehicle load changes more gently than that of non-partial slab under vehicle load.With the increase of the oblique angle,the transverse distribution coefficient of the biased load side plate increases,and the transverse distribution coefficient of the non-biased load side plate decreases.When the inclination angle of hollow slab bridge is less than 20°,the increment of the lateral distribution coefficient of each plate on the off-load side is less than 5%,which can be approximately ignored in practical engineering.When the deviation angle is more than 30°,the impact on load distribution is great,which cannot be ignored in analysis.

关 键 词：装配式空心板桥 荷载横向分布系数 有限元梁格法 宽跨比 斜交角 

分 类 号：U442[建筑科学—桥梁与隧道工程]