期刊论文

Analysis on Multiparameter Sensitivity of Flexural-tensile Performance of Basalt Fiber Reinforced Asphalt Mixture

中文

公路交通科技

1002-0268

2020

37

11

1-7

10.3969/j.issn.1002-0268.2020.11.001

国家自然科学基金项目(51678078) 国家重点研发计划项目(2018YFB1600200) 湖南省自然科学基金项目(2020JJ5578) 长沙理工大学公路养护技术国家工程实验室开放基金资助项目(kfj180101)。

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为评价玄武岩纤维掺量、长径比和模量等因素对其增强沥青混合料弯拉性能的敏感性,通过MATLAB程序中rand函数和AutoCAD宏命令,实现了玄武岩纤维的空间随机分布。运用ABAQUS有限元软件,建立了玄武岩纤维在沥青混合料内随机分布的三点弯曲小梁试件模型。选取3个纤维掺量W (0.1%,0.2%,0.3%),3个纤维长径比Ld (23,35,47)和3个纤维模量E (8 × 10~4,9 × 10~4,1 × 10~5 MPa),通过3因素3水平的正交试验,计算了在0.7 MPa轮压荷载作用下小梁试件的层底最大弯拉应力。运用极差分析法和方差分析法,分析了玄武岩纤维掺量、纤维长径比和纤维模量对沥青混合料弯拉性能影响的敏感性,并对玄武岩纤维参数进行了单...

To evaluate the sensitivity of basalt fiber content,length-diameter ratio and modulus,etc. to the enhancement of the flexural-tensile performance of asphalt mixture,the spatial random distribution of basalt fiber is realized by the rand function in the MATLAB program and AutoCAD macro command. Using ABAQUS FE software,a 3-point bending beam specimen model with basalt fiber randomly distributed in the asphalt mixture is established. Choosing the fiber parameters such as content (W) of 0.1%,0.2%,0.3%, length-diameter ratio (Ld) of 23,35,47,and mo...