| 正温时沥青混合料中间主应力效应试验 |
| |
| 引用本文： | 锁利军,童怀峰,王秉纲.正温时沥青混合料中间主应力效应试验[J].长安大学学报(自然科学版),2011(4):12-15,21. |
| |
| 作者姓名： | 锁利军 童怀峰 王秉纲 |
| |
| 作者单位： | 洛阳理工学院土木工程系;长安大学特殊地区公路工程教育部重点实验室; |
| |
| 基金项目： | 河南省科技攻关项目(102102310271); 河南省教育厅自然科学项目(2010B580003) |
| |
| 摘 要： | Mohr-Coulomb强度理论及现有评价沥青混合料的强度试验方法均未考虑中间主应力对沥青混合料强度的影响。闭式三轴试验对应的力学分析表明,三轴挤伸的最大剪应力明显高于三轴挤压的最大剪应力,这种计算结果的差别是由中间主应力的不同而引起的。为了研究沥青混合料的中间主应力效应,以正交试验设计为基础,考虑温度、加载速度与中间主应力3个因素,采用平面应变试验装置测试了不同条件下沥青混合料的强度。正交试验的显著性分析表明:正温时,中间主应力对沥青混合料强度的影响最显著,温度对沥青混合料强度的影响次之,加载速率对沥青混合料的强度也有显著影响,但在3个因素中最弱。
|
| 关 键 词： | 道路工程 沥青混合料 强度 中间主应力 正交试验 |
Influence of intermediate principal stress on asphalt mixture strength in positive temperature |
| |
| SUO Li-jun,TONG Huai-feng,WANG Bing-gang.Influence of intermediate principal stress on asphalt mixture strength in positive temperature[J].JOurnal of Chang’an University:Natural Science Edition,2011(4):12-15,21. |
| |
| Authors: | SUO Li-jun TONG Huai-feng WANG Bing-gang |
| |
| Institution: | SUO Li-jun1,TONG Huai-feng1,WANG Bing-gang2(1.Department of Civil Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,Henan,China,2.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an 710064,Shaanxi,China) |
| |
| Abstract: | Both strength theory of Mohr-Coulomb and testing methods,which are used to value the strength of asphalt mixture in specification,do not include intermediate principal stress.Mechanical study corresponding to closed tri-axial test is carried out.The rest shows that maximum shear stress in tri-axial extrusion stress state is more than the counterparts in tri-axial compression stress state.The result is attributed to the difference of intermediate principal stress in two different stress states.In order to st... |
| |
| Keywords: | road engineering asphalt mixture strength intermediate principal stress ortho-gonal test |
| 本文献已被 CNKI 等数据库收录！ |
|
