大粒径沥青碎石柔性基层在市政道路中的性能评估及应用
发布时间：2018-07-25 17:45
【摘要】：市政道路是城市国民经济建设的重要基础设施,由于车辆荷载的反复作用和自然因素的侵蚀破坏,加之近些年来交通量及重型车辆显著增长等带来的不利影响,出现如路面破损、凹陷、裂缝、脱空或路基疏松等路面灾害,影响路面的使用性能。而大粒径沥青稳定碎石柔性基层路面与普通沥青路面相比,具有高刚度,高强度和耐疲劳的性能,可以有效的避免沥青路面裂缝的产生。如何用有效的手段来设计和评价大粒径沥青碎石一直是国外试验研究的重点,国内对大粒径沥青稳定碎石柔性基层的系统研究刚刚兴起,还没有成熟的规范可以参考。在文献调研的基础之上,进行了大粒径沥青稳定碎石柔性基层材料力学特性的研究,结合室内试验确定了大粒径沥青碎石抗压回弹模量、劈裂抗拉强度、FWD弯沉数据反分析结构层模量等材料参数,以及面层与基层层间粘聚本构模型。实施了大粒径沥青稳定碎石柔性基层实体工程,并对其进行了相关的检测及分析。之后,利用有限元软件对实体工程进行了分析评价。除此之外,对大粒径沥青稳定碎石柔性基层施工技术及施工工艺进行了研究,对层间粘结层的施工注意事项进行归纳。最后总结了关于大粒径沥青稳定碎石柔性基层研究的主要结论,并提出了相应建议。
[Abstract]:Municipal road is an important infrastructure in the construction of urban national economy. Due to the repeated effects of vehicle loads and the erosion and destruction of natural factors, coupled with the adverse effects of the traffic volume and the significant growth of heavy vehicles in recent years, Pavement disasters such as pavement breakage, depression, crack, void or roadbed looseness affect pavement performance. Compared with ordinary asphalt pavement, large size asphalt stabilized macadam flexible base pavement has high stiffness, high strength and fatigue resistance, which can effectively avoid the occurrence of asphalt pavement cracks. How to design and evaluate the asphalt macadam with large particle size by effective means has always been the focus of foreign experimental research. The domestic systematic research on flexible base of asphalt stabilized macadam with large particle size has just arisen, and there is no mature standard to refer to. On the basis of literature investigation, the mechanical properties of flexible base materials of large size asphalt stabilized macadam were studied, and the compressive resilience modulus of large size asphalt macadam was determined in combination with laboratory tests. Splitting tensile strength and FWD deflection data back analysis of material parameters such as structural layer modulus, as well as the cohesive constitutive model between the surface layer and the base layer. The large-size asphalt stabilized macadam flexible base course was implemented, and its related detection and analysis were carried out. Then, the finite element software is used to analyze and evaluate the entity engineering. In addition, the construction technology and construction technology of the flexible base course of large size asphalt stabilized macadam are studied, and the matters needing attention in the construction of the interlayer bond layer are summarized. Finally, the main conclusions of the research on the flexible base of asphalt stabilized macadam with large particle size are summarized, and the corresponding suggestions are put forward.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.2
本文编号：2144562
[Abstract]:Municipal road is an important infrastructure in the construction of urban national economy. Due to the repeated effects of vehicle loads and the erosion and destruction of natural factors, coupled with the adverse effects of the traffic volume and the significant growth of heavy vehicles in recent years, Pavement disasters such as pavement breakage, depression, crack, void or roadbed looseness affect pavement performance. Compared with ordinary asphalt pavement, large size asphalt stabilized macadam flexible base pavement has high stiffness, high strength and fatigue resistance, which can effectively avoid the occurrence of asphalt pavement cracks. How to design and evaluate the asphalt macadam with large particle size by effective means has always been the focus of foreign experimental research. The domestic systematic research on flexible base of asphalt stabilized macadam with large particle size has just arisen, and there is no mature standard to refer to. On the basis of literature investigation, the mechanical properties of flexible base materials of large size asphalt stabilized macadam were studied, and the compressive resilience modulus of large size asphalt macadam was determined in combination with laboratory tests. Splitting tensile strength and FWD deflection data back analysis of material parameters such as structural layer modulus, as well as the cohesive constitutive model between the surface layer and the base layer. The large-size asphalt stabilized macadam flexible base course was implemented, and its related detection and analysis were carried out. Then, the finite element software is used to analyze and evaluate the entity engineering. In addition, the construction technology and construction technology of the flexible base course of large size asphalt stabilized macadam are studied, and the matters needing attention in the construction of the interlayer bond layer are summarized. Finally, the main conclusions of the research on the flexible base of asphalt stabilized macadam with large particle size are summarized, and the corresponding suggestions are put forward.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.2
【参考文献】
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