基于Weibull分布的水稳碎石基层损伤本构模型研究  

Damage principal model of cement stabilized aggregates subgrade based on Weibull distribution

作　　者：王广胤 孙海霞 王书鹏 张科 WANG Guangyin;SUN Haixia;WANG Shupeng;ZHANG Ke(School of Architecture and Civil Engineering,Shenyang University of Technology,Shenyang 110870,China;Yancheng Municipal Facilities Management Department,Yancheng 224000,China;China Electronics Engineering Design Institute Company Limited,Beijing 100142,China;China Power Investment Engineering Research,Testing and Evaluation Center Company Limited,Beijing 100142,China)

机构地区：[1]沈阳工业大学建筑与土木工程学院,辽宁沈阳110870 [2]盐城市市政设施管理处,江苏盐城224000 [3]中国电子工程设计院有限公司,北京100142 [4]中电投工程研究检测评定中心有限公司,北京100142

出　　处：《辽宁工程技术大学学报(自然科学版)》2024年第6期52-58,共7页Journal of Liaoning Technical University (Natural Science)

基　　金：辽宁省自然科学基金项目(2019-ZD-0207);辽宁省教育厅高校基本科研项目(JYTMS20231188)。

摘　　要：为探究水稳碎石半刚性基层的力学性能,采用理论分析和实验的方法,构建在单轴压缩载荷作用下水稳碎石基层损伤本构模型,并借助7d无侧限抗压试验对该损伤本构模型进行验证,分析不同龄期的水稳碎石以及掺赤泥橡胶粉水稳碎石累积损伤的扩展过程。研究结果表明:随着掺入赤泥橡胶粉以及龄期的增加,损伤本构模型的损伤因数η不断增大,分布参数m和F0减小,有效地抑制了损伤发展。本构模型理论曲线与试验曲线的拟合度较高,研究结果可为后续的水稳碎石基层相关计算提供参考。In order to investigate the mechanical properties of cement stabilized aggregates semi-rigid base layer,the damage constitutive model of cement stabilized aggregates semi-rigid base layer under uniaxial compression load was constructed by theoretical analysis and experimental method,and the damage constitutive model was verified with the support of 7 d unconfined compression test,and the expansion process of cumulative damage of cement stabilized aggregates of different ages and cement stabilized aggregates doped with red mud and rubber powder was analyzed.The results show that the damage factorηof the damage constitutive model increases with the addition of red mud rubber powder and the increase of age,and the values of the distribution parameters m and F0 decrease,which can effectively inhibit the damage extension,and the theoretical curves of the constitutive model and the test curves fit well,which can provide theoretical references for the subsequent calculations of the related calculations of the cement stabilized aggregate.

关 键 词：水稳碎石 WEIBULL分布 结构损伤 本构模型 赤泥橡胶粉掺量 

分 类 号：U414[交通运输工程—道路与铁道工程]