沥青稳定碎石矿料界面拉剪效应研究
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摘要
文章主要研究沥青稳定碎石柔性基层矿料界面拉伸、剪切效应。基于有限元分析理论,模拟建立尺寸约为24cm×4cm×4cm的小梁试件,在受两端简支约束的条件下,于梁纵向中间位置承受沿纵向宽度约为1cm的均布荷载。通过计算确定不同油膜厚度、不同温度以及不同荷载对矿料界面所受拉应力与剪应力的影响效应。研究表明,外荷载的变化会导致界面上出现拉压转换的力学特性,温度会显著改变矿料界面力学分布规律,油膜厚度对矿料界面力学特性影响显著。
The tensile and shearing effects of asphalt stabilized macadam flexible base minerals are studied,in this paper based on the finite element analysis theory,the establishment of trabecular specimens is simulated with a size of about 24 cm×4 cm×4 cm,under the condition of restraint at the ends,a uniform load of about 1 cm in the longitudinal direction is received at the longitudinal intermediate position of the beam.The effects of different oil film thickness,different temperature and different loads on tensile stress and shear stress of thin asphalt between mineral materials are studied by finite element simulation.The results show that the change of external load will lead to the mechanical characteristics of the tensile transformation on the interface,the temperature will significantly change the mechanical distribution law of the mineral interface,and the thickness of oil film has a significant influence on the mechanical properties of the mineral interface
The tensile and shearing effects of asphalt stabilized macadam flexible base minerals are studied,in this paper based on the finite element analysis theory,the establishment of trabecular specimens is simulated with a size of about 24 cm×4 cm×4 cm,under the condition of restraint at the ends,a uniform load of about 1 cm in the longitudinal direction is received at the longitudinal intermediate position of the beam.The effects of different oil film thickness,different temperature and different loads on tensile stress and shear stress of thin asphalt between mineral materials are studied by finite element simulation.The results show that the change of external load will lead to the mechanical characteristics of the tensile transformation on the interface,the temperature will significantly change the mechanical distribution law of the mineral interface,and the thickness of oil film has a significant influence on the mechanical properties of the mineral interface
引文
[1]袁宏伟.沥青稳定碎石基层材料设计方法研究[D].长安大学,2003.
[2]田小革,韩海峰,李新伟,等.抗裂型沥青稳定碎石的双面剪切疲劳性能研究[J].建筑材料学报,2018,(1).
[3]冯新军,郝培文,查旭东.沥青稳定碎石基层抗反射裂缝能力评价方法[J].中国公路学报,2011,24(2):6-11.
[4]吴勇往.沥青稳定碎石设计参数研究[J].公路交通科技:应用技术版,2008,(7):67-69.
[5]陈飞,吴勇往,陈明,等.密级配沥青稳定碎石疲劳性能研究[J].公路,2011,(4):156-160.
[6]L T Mo,M Huurman.2Dand 3Dmeso-scale finite element models for ravelling analysis of porous asphalt concrete[M].2008.
[7]史思强.基于不同设计方法的沥青稳定碎石弯曲疲劳特性[J].公路,2012,(9):193-196.
[8]李鹏,陈昊雯.沥青稳定碎石应力依赖模型的柔性路面结构分析[J].哈尔滨工业大学学报,2017,49(9):51-57.
[9]石培峰,马士宾,许爱丽,等.沥青稳定碎石基层对沥青路面力学性能的影响分析[J].公路交通科技:应用技术版,2007,(5):79-81.
[10]周俊,刘定涛,张义朋,等.大粒径沥青碎石基层路面力学性能试验研究[J].武汉理工大学学报:交通科学与工程版,2010,34(6):1217-1219.
[11]陈勇军.沥青稳定碎石基层对沥青路面力学的特性影响分析[J].公路工程,2012,37(1):79-82.
[12]牛志力.柔性基层沥青路面抗车辙性能理论研究[J].武汉理工大学学报,2009,(16):44-46.
[2]田小革,韩海峰,李新伟,等.抗裂型沥青稳定碎石的双面剪切疲劳性能研究[J].建筑材料学报,2018,(1).
[3]冯新军,郝培文,查旭东.沥青稳定碎石基层抗反射裂缝能力评价方法[J].中国公路学报,2011,24(2):6-11.
[4]吴勇往.沥青稳定碎石设计参数研究[J].公路交通科技:应用技术版,2008,(7):67-69.
[5]陈飞,吴勇往,陈明,等.密级配沥青稳定碎石疲劳性能研究[J].公路,2011,(4):156-160.
[6]L T Mo,M Huurman.2Dand 3Dmeso-scale finite element models for ravelling analysis of porous asphalt concrete[M].2008.
[7]史思强.基于不同设计方法的沥青稳定碎石弯曲疲劳特性[J].公路,2012,(9):193-196.
[8]李鹏,陈昊雯.沥青稳定碎石应力依赖模型的柔性路面结构分析[J].哈尔滨工业大学学报,2017,49(9):51-57.
[9]石培峰,马士宾,许爱丽,等.沥青稳定碎石基层对沥青路面力学性能的影响分析[J].公路交通科技:应用技术版,2007,(5):79-81.
[10]周俊,刘定涛,张义朋,等.大粒径沥青碎石基层路面力学性能试验研究[J].武汉理工大学学报:交通科学与工程版,2010,34(6):1217-1219.
[11]陈勇军.沥青稳定碎石基层对沥青路面力学的特性影响分析[J].公路工程,2012,37(1):79-82.
[12]牛志力.柔性基层沥青路面抗车辙性能理论研究[J].武汉理工大学学报,2009,(16):44-46.