【作者】 李立伟；

【导师】 蒋应军；

【作者基本信息】 长安大学 ， 道路与铁道工程， 2011， 硕士

【摘要】 随着施工技术水平的提高,重型击实法和静压成型法已不能较好反映水泥稳定碎石现场碾压工况及材料的实际路用性能。建立在重型击实法和静压成型法基础上的现行设计方法也难以有效指导水泥稳定碎石材料组成设计以及现场施工质量控制。鉴于此,在充分论述振动试验方法(VTM)可靠性的基础上,开展基于VTM的水泥稳定碎石设计方法研究,具有实际意义。论文首先对分别验证了振动击实法与振动成型法的可靠性、准确性与精准性,并基于VTM对比分析了两种骨架密实级配性能；基于VTM法,研究水泥稳定碎石力学强度特性,揭示各因素对水泥稳定碎石力学特性影响规律,并建立了两种类型强度关系式；研究基于VTM水泥稳定碎石劈裂疲劳特性,应用威布尔分布理论对疲劳数据处理,并根据路面实际情况修正室内疲劳方程,建立了水泥稳定碎石抗拉强度结构系数KS=0.70N0.043e/Ac；应用疲劳累积损伤定律Miner理论建立水泥稳定碎石基层在施工期与营运期疲劳断裂方程,综合考虑在荷载作用下发生极限破坏,提出了水泥稳定碎石强度设计标准；在此基础上,建立了基于VTM的水泥稳定碎石设计方法。研究成果将进一步促进水泥稳定碎石技术发展。更多还原

【Abstract】 As with the development of construction technology level, heavy compaction method (HCM)and static pressure producing specimen method (SPSM) already can’t better reflect field rolling conditions and actual road properties of Cement Stabilized Crushed Aggregate (CSCA). And current design method based on HCM and SPSM has been difficult to effectively guide mateRpal composition design and construction quality control. ConsideRpng all above, it is of great practical significance to carry out study on the design methodology of CSCA based on analysing the reliability of vibrating test method (VTM).Firstly, the paper verify the reliability,accuracy and precision of Vibrating Compaction Testing Method and Vibrating Pressure Producing Specimen Method, and performance compaRpson of two skeleton close-grained gradation performance the based on VTM;Secondly, based on VTM,this paper goes deeply into compressive strength properties and splitting strength properties on CSCA, shows the influence rules every factor affect mechanical strength of CSCA and set up equation of two types strength; Thirdly, researched on splitting fatigue properties of Cement Stabilized Crushed Aggregate based on VTM, fatigue data processing with weibull distRpbution theory, and fixed situation fatigue equatio with the actual, established tensile strength structure coefficient of CSCA KS=070Ne0.043/Ac; Finally, application Miner fatigue cumulative damage theory duRpng construction and operation phase, established fatigue fracture equation of CSCA, consideRpng limit damage occurred Under load, puts forward strength design standards of CSCA. Above all,a CSCA design method based on VTM is built in this paper. The study will further promote technology development of Cement Stabilized Crushed Aggregate.更多还原