基于使用性能的沥青路面加铺层多目标设计方法研究

发布时间：2018-05-13 16:18

本文选题：沥青路面 + 加铺层设计　；参考：《哈尔滨工业大学》2015年硕士论文

【摘要】：沥青路面加铺层设计以恢复路面结构强度和使用性能为主要目标。本文对沥青路面加铺层设计方法的研究主要从路面使用性能衰变规律出发,对加铺层厚度、结构和材料进行设计,以期路面在整个使用寿命期内都能满足性能服务要求。本文的主要研究内容包括以下几个方面。通过对我国季节性冰冻地区多条高速公路的调查,确定了沥青路面加铺层的主要病害是路面车辙和横向裂缝,并且分析了病害产生的机理及其影响因素;根据路面使用性能要求建立性能评价指标体系,并且通过分析京哈高速公路历年的路面性能数据建立了路面结构强度指数PSSI、路面车辙深度指数RDI、路面行驶质量指数RQI、路面抗滑性能指数SRI和路面横向裂缝指数CI五项指标分别在不同交通荷载、路面结构、环境因素等组合作用下的衰减模型;借助AASHTO路面结构数和我国路面结构强度系数的概念建立了旧路有效结构数计算模型,并且通过分析结构数对路面结构强度衰减的影响,建立了不同交通荷载等级对应下基于路面结构数的路面结构强度综合衰减模型;通过设计年限内累计标准轴载作用次数的计算,并分析相应交通压力下路面车辙深度的发展规律,建立了基于累计标准轴次的路面车辙深度综合发展模型;通过对东北三省多条高速公路路面横向裂缝的实测调查,建立了基于沥青面层低温开裂和半刚性基层反射裂缝的路面横向开裂预估模型;在分析国内外已有加铺层设计方法的基础上,提出了基于使用性能的沥青路面多目标设计方法,并确定了性能设计指标以及加铺层设计参数;通过沈山高速公路实际工程案例,分析比较了应用本文加铺层设计方法与《公路沥青路面设计规范》(JTG D50-2014总校稿)、AASHTO等方法的设计结果,验证了本文方法的合理性。
[Abstract]:The main aim of asphalt pavement overlay design is to restore the strength and performance of pavement structure. In this paper, the design method of asphalt pavement overlay is studied, based on the law of pavement performance decay, the overlay thickness, structure and material are designed so that the pavement can meet the requirements of performance service in the whole service life. The main contents of this paper include the following aspects. Through the investigation of many freeways in the seasonal frozen area of China, the main diseases of asphalt pavement overlay are identified as rutting and transverse cracks, and the mechanism of the disease and its influencing factors are analyzed. According to the requirements of pavement performance, a performance evaluation index system is established. By analyzing the pavement performance data of Beijing-Harbin Expressway over the years, the pavement structural strength index (PSSI), pavement rutting depth index (RDI), pavement quality index (RQI), pavement skid resistance index (SRI) and pavement transverse crack index (CI) were established. The five indicators are used in different traffic loads, Based on the concept of AASHTO pavement structure and the strength coefficient of pavement structure in China, the effective structure number calculation model of the old road is established. By analyzing the influence of the number of structures on the strength attenuation of pavement structure, a comprehensive attenuation model of pavement strength based on the number of pavement structures under different traffic load grades is established. Through the calculation of the accumulative standard axle load action times in the design years and the analysis of the development law of the pavement rutting depth under the corresponding traffic pressure, the comprehensive development model of the pavement rutting depth based on the accumulative standard axle number is established. Based on the investigation of pavement transverse cracks in three provinces of Northeast China, a prediction model of pavement transverse cracking based on asphalt surface cracking at low temperature and reflection cracks at semi-rigid base is established. Based on the analysis of the existing overlay design methods at home and abroad, the multi-objective design method of asphalt pavement based on performance is put forward, and the performance design index and overlay design parameters are determined. This paper analyzes and compares the design results of the overlay design method and JTG D50-2014 general draft and AASHTO method, and verifies the rationality of this method.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217

【参考文献】