摘要
为深入探究路面拱胀病害的形成原因,建立基于有限元的“温度-膨胀性-结构”耦合模型,分析环境温度、路面材料和基层结构连续长度相互作用对路面拱胀病害的影响.采用正交试验设计方法,将水泥含量、级配设计、养生龄期和基层结构连续长度的不同因素水平进行方案组合,利用ANSYS模拟每组方案在温差为10、20、30、40、50、60℃时的路面拱胀高度.结果表明:增加养生龄期不能防治拱胀病害,优化水泥含量和级配设计可以有效防治但不能完全消除,合理控制路面基层结构连续长度的防治效果最好.此外,优化水泥含量和级配设计时,需要同时考虑水稳基层材料的膨胀系数和抗压强度.
In order to deeply explore the causes of pavement bulging diseases,a coupled model of“temperature-expansibility-structure”based on finite element was established,and the influence of the interaction of environmental temperature,pavement materials and continuous length of base structure on pavement bulging diseases was analyzed.The orthogonal experimental design method was adopted to combine the different factor levels of cement content,gradation design,curing age and continuous length of base structure,and ANSYS was used to simulate the pavement bulging height of each group of schemes when the temperature difference is 10,20,30,40,50 and 60℃.The results show that increasing curing age can’t prevent the bulging disease,optimizing cement content and gradation design can effectively prevent it,but it can’t be completely eliminated,and controlling the continuous length of pavement base structure reasonably has the best prevention effect.In addition,when optimizing cement content and gradation design,it is necessary to consider both the expansion coefficient and compressive strength of water-stabilized base materials.
作者
郭小宏
王娅君
王正伟
罗璇
GUO Xiaohong;WANG Yajun;WANG Zhengwei;LUO Xuan(School of Economics and Management,Chongqing Jiaotong University,Chongqing 400074,China;Xinjiang Road and bridge south Xinjiang Engineering construction Co.Ltd.,Kashgar 844099,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《武汉理工大学学报(交通科学与工程版)》
2025年第6期1324-1330,共7页
Journal of Wuhan University of Technology(Transportation Science & Engineering)
基金
新疆路桥建设集团科技项目(E1220044)。
关键词
大温差
有限元
拱胀病害
水泥稳定基层
耦合分析
large temperature difference
finite element
arch expansion disease
cement stabilized base
coupled analysis
