摘要
随着大量超载车辆的出现,桥梁结构损伤加剧,降低了结构使用寿命。该文首先分析了车辆动力放大系数的计算方法,其次对荷载效应计算与统计方法进行了研究,然后通过疲劳模型的建立,对车辆荷载作用下的桥梁使用寿命进行计算,最后给出了用于桥梁荷载性能估算的有限元程序,从而进一步确定了桥梁车辆荷载对桥梁疲劳性能的影响。
With the emergence of a large number of overloading vehicles,the damage of bridge structures increases, and the service life of structure decreases.For this reason,this paper firstly analyzes the calculation method of the ve-hicle dynamic magnification coefficient,then the calculative and statistical methods of load effect are studied,then it u-ses the fatigue model established here to calculate the service life of the bridge under the action of the vehicle load.Fi-nally the finite element program for bridge load performance estimation is given and furthermore the influence of vehi-cle loads on bridges fatigue performance is determined.
出处
《建材世界》
2014年第2期127-129,148,共4页
The World of Building Materials
关键词
公铁两用桥梁
车辆荷载
疲劳分析
highway-railway bridge
vehicle load
fatigue analysis
