【摘 要】
：
对于断板率较高的水泥混凝土路面，目前常采用冲压技术使原路面破裂稳固后加铺沥青结构层进行改造，但目前对路面板破裂尺寸大小国内外取值相差较大，且缺乏相应的理论依据。本文采用三维有限元法计算分析了水泥混凝土路面板破裂尺寸与沥青加铺层的荷载应力、温度应力、耦合应力及基层顶面压应力之间的关系。结果表明，路面板破裂尺寸对沥青加铺层的温度应力及耦合应力的影响远大于对荷载应力的影响，且随着破裂尺寸的减小，沥青加铺
【机 构】
：
长安大学特殊地区公路工程教育部重点实验室,西安 710064 长安大学特殊地区公路工程教育部重点实
论文部分内容阅读
对于断板率较高的水泥混凝土路面，目前常采用冲压技术使原路面破裂稳固后加铺沥青结构层进行改造，但目前对路面板破裂尺寸大小国内外取值相差较大，且缺乏相应的理论依据。本文采用三维有限元法计算分析了水泥混凝土路面板破裂尺寸与沥青加铺层的荷载应力、温度应力、耦合应力及基层顶面压应力之间的关系。结果表明，路面板破裂尺寸对沥青加铺层的温度应力及耦合应力的影响远大于对荷载应力的影响，且随着破裂尺寸的减小，沥青加铺层的温度应力及耦合应力迅速降低，接缝或裂缝处应力集中现象明显减弱，但基层顶面的压应力却随破裂尺寸的减小而增大。综合考虑，路面板的破裂尺寸在80～100cm范围内较为合理。
其他文献
The Huning Expressway serves a vital role in the movement of passengers and goods from Shanghai to Nanjing, so it is imperative that the highway provide good, long-term service to the traveling public
In an ongoing transportation pooled fund study on refining Superpave binder specifi cations, 12 full-scale pavement lanes with various modified asphalts were constructed at the Federal Highway Adminis
Artificial Intelligence and Fuzzy Sets theories have found a wide range of applications in engineering. In this paper, a fuzzy linear clustering method was applied to estimate the pavement parameters
The Long Tenn Pavement Performance (LTPP) Specific Pavement Study Experiment 2 (SPS-2), Strategic Study of Structural Factors for Jointed Plain Concrete Pavements ( JPCP), is one of the key experiment
This paper presents the comparison between the results of the Semi-Circular Bending (SCB) test and that of the Indirect Tensile (IDT) test in characterizing the tensile strength of hot-mix asphalt (HM
In the past two decades, micromechanical modeling has been recognized as one of the best approach in studying asphalt mixture. The micromechanical models have tremendous potential benefits in the fie
Different types and kinds of SBS modifiers make remarkable improvements on modi fied asphalts. Performances of modified asphalts made by different proportions and usage of SBS modifiers with different
According to the study for the automatic measurement and analysis of the asphalt mixture system, this paper makes a thorough discussion to the algorithm of digital image seg mentation, and it offers s
This paper contains an analysis of cracking propagation mechanism in flexible pavements. Several Anti cracking systems are proposed, glass fibers reinforcing materials is used .Two different reinforci
本文以南非两个路面加速加载试验(APT)系统MLS和HVS模拟演示为基础，介绍了它们的现场应用技术参数和测试效果及车辆路面用的动态应力(STRESS-IN-MOTION系统)信息，为南非和中国两国的交通技术在此领域交流与合作提供了参考。