不同压实方法成型SMA-13疲劳性能研究  

Fatigue performance of SMA-13 formed by different compaction methods

作　　者：倪辰秧 蒋应军[1] 张宇 杨迪锋 Ni Chenyang;Jiang Yingjun;Zhang Yu;Yang Difeng(Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an 710064,China)

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《南京理工大学学报》2022年第3期352-359,共8页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金(51408044);吉林省交通运输科技计划(2017ZDGC-7)。

摘　　要：为了研究不同成型方法对沥青玛蹄脂碎石混合料(SMA-13)疲劳性能的影响,采用垂直振动压实法(VVCM)、标准马歇尔(Marshall)法和Superpave旋转压实(SGC)法制备SMA-13。通过间接拉伸疲劳试验评价混合料的疲劳性能,应用威布尔分布建立疲劳方程。研究表明:不同方法设计的SMA-13疲劳性能均服从双参数威布尔分布,采用不同方法设计SMA-13疲劳方程可以准确预估其疲劳寿命;压实方法对SMA-13疲劳性能影响显著,在应力水平为0.45且失效概率为5时,VVCM设计的SMA-13疲劳寿命较Marshall法提高了33%,较SGC法提高了9%。In order to study the influence of different molding methods on the fatigue performance of stone mastic asphalt-13(SMA-13),SMA-13 is prepared by vertical vibration compaction method(VVCM),standard Marshall method and Superpave gyratory compactor(SGC).The fatigue performance of SMA-13 is evaluated by indirect tensile fatigue test,and the fatigue equation is established by Weibull distribution.The results show that the fatigue properties of SMA-13 designed by different methods obey two parameter Weibull distribution,and the fatigue life of SMA-13 designed by different methods can be accurately estimated by establishing fatigue equation.The compaction method has significant influence on the fatigue properties of SMA-13.When the stress level is 0.45 and the failure probability is 5,the fatigue life of SMA-13 designed by VVCM is 33%higher than that of Marshall method and 9%higher than that of SGC method.

关 键 词：沥青玛蹄脂碎石混合料 疲劳性能 垂直振动压实法 标准马歇尔法 间接拉伸疲劳试验 威布尔分布 

分 类 号：U416.2[交通运输工程—道路与铁道工程]