长悬臂行车道板简化分析计算  

Simplified Analysis and Calculation of Large Cantilever Deck

作　　者：张春宇 Zhang Chunyu(Dalian Municipal Design and Research Institute Co.,Ltd.,Dalian 116021,China)

机构地区：[1]大连市市政设计研究院有限责任公司,辽宁大连116021

出　　处：《市政技术》2021年第2期28-30,34,共4页Journal of Municipal Technology

摘　　要：对于悬臂长度超过2.5 m的行车道板,传统的有效分布宽度概念已经不再适用。以实际工程为依托,把根据沙柯公式和巴赫公式计算出的悬臂根部弯矩与传统分布宽度计算出的弯矩进行比较,得出了该工程中采用沙柯公式的计算结果要高于传统分布宽度的计算结果。为简化分析,将悬臂端部相应的分布宽度降低同样的比例,并将该分布宽度的倒数作为车轮荷载系数,利用Midas软件对桥面板进行了计算分析。The traditional concept of effective distribution width is no longer applicable to the cantilever deck over2.5 m in length.Based on the actual project,this paper compares the roof bending moment calculated by shako formula and Bach formula with that calculated by traditional distribution width.It draws the conclusion that the calcu-lation result of former method is higher than the latter’s.In order to simplify the analysis,the corresponding distribution width at the end of the cantilever is reduced by the same proportion,and the reciprocal of the distribution width is taken as the wheel load coefficient.The bridge deck is calculated and analyzed by the Midas software.

关 键 词：桥梁 长悬臂桥面板 分布宽度 荷载系数 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]