反光式突起路标功能失效ANASYS分析

根据目前道路上安装的反光式突起路标存在破坏率高、反光功能失效快等问题,在调查数据基础上,分析得出反光式突起路标的主要破坏形式为脱落、压碎、凹陷、反光性能衰减等,破坏主要原因有基体材料抗压强度不够、机体与路面粘结不牢固等。在此基础上,运用ANSYS软件,建立有限元分析模型,将影响因素分为静荷载与动荷载两种情况分别加载到有限元分析模型上进行力学分析,模拟得出突起路标的主要应力集中点在突起路标表面四个边缘区域与钉脚与基座衔接段。将ANSYS分析数据导入Fe-Safe软件,模拟得出突起路标在荷载作用150482次后发生破坏,疲劳寿命系数为0.613,屈服极限为603Mpa。

Function Failure Analysis of Reflective Protuberant Pavement Marker Based on ANASYS

Aiming at the problems of high damage rate and fast function failure of reflective protuberant pavement marker installed in present road,on the basis of survey data,it is analyzed that the major failure modes of the marker is signs off,structure crushed,body sunken and reflective performance degradation.And the main reasons of function failure include compressive strength deficiency of base material and unfirm of adhesion strength between the body and pavement.A finite element analysis model was set up by using ANSYS software to carry out mechanical analysis.During the process,the load was divided into two types,static load and dynamic load,which were put on the finite element analysis model in ANSYS to simulate the stress concentration points.It was found that stress concentration happens on the surface around four edges and the position of knot between nail and base.The analyzing data in ANSYS was imported into Fe-Safe software to simulate the failure process of reflective protuberant pavement marker under the given load.Then the service life（150482 times） and the rolling frequency（0.613） as well as the yield limit（603Mpa） of the pavement marker were got.