학술논문
荷载作用下UHPC+AC复合试件裂缝发展的分形分析 / Fractal Analysis of Crack Development in UHPC+AC Composite Specimens Under Loads
Document Type
Academic Journal
Source
广东建材 / Guangdong Building Materials. 40(1):108-111
Subject
Language
Chinese
ISSN
1009-4806
Abstract
基于道路及相关材料发展现状,提出UHPC+AC复合式路面,制作UHPC+AC复合小梁试件并开展梯度荷载加载试验,记录得到复合试件表面裂缝的生长过程,利用分形分析方法分别对复合试件AC层、UHPC层裂缝进行量化分析.研究分析发现复合试件AC层裂缝分形维数随荷载增加呈线性关系增加,复合试件UHPC层裂缝分形维数随荷载增加呈指数关系增加,裂缝最终损伤形态分别为网状和线状.研究结论为UHPC+AC复合式路面的设计和维护提供理论依据.
Based on the current development of road and related materials,UHPC+AC composite pavement is proposed.The UHPC+AC composite beam specimens were made and gradient load loading test was carried out to record the growth process of surface cracks on the composite specimens.The fractal analysis method was used to quantitatively analyze the cracks in the AC and UHPC layer of composite specimens respectively.It was found that the fractal dimension of the cracks in the AC layer of the composite specimens increased linearly with the increase of load,and that the fractal dimension of the cracks in the UHPC layer of the composite specimens increased exponentially with the increase of load,and the final damage morphology of the cracks was reticulate and linear,respectively.The conclusions of the study provide theoretical basis for the design and maintenance of UHPC+AC composite pavement.
Based on the current development of road and related materials,UHPC+AC composite pavement is proposed.The UHPC+AC composite beam specimens were made and gradient load loading test was carried out to record the growth process of surface cracks on the composite specimens.The fractal analysis method was used to quantitatively analyze the cracks in the AC and UHPC layer of composite specimens respectively.It was found that the fractal dimension of the cracks in the AC layer of the composite specimens increased linearly with the increase of load,and that the fractal dimension of the cracks in the UHPC layer of the composite specimens increased exponentially with the increase of load,and the final damage morphology of the cracks was reticulate and linear,respectively.The conclusions of the study provide theoretical basis for the design and maintenance of UHPC+AC composite pavement.