【作者】 郝大力；

【导师】 王秉纲；

【作者基本信息】 长安大学 ， 道路与铁道工程， 2000， 博士

【摘要】 路面性能是路面为保障客货运输车辆的正常行驶所应具备的能力和属性。路面长期性能（LTPP）研究是近年来国际道路工程界开展的一项基础性研究，通过广泛的调查统计、理论分析、测试与试验，深入研究荷载、环境、结构、材料、施工、养护维修等影响路面性能的基本要素，对道路路面系统在较长的运营时期内的性能状况进行全面、深入的认识，形成系统、完整的工程理论，从而对路面的设计、施工、养护、维修、运营和管理等方面的实践提供有力的指导和帮助，为增加路面使用寿命提供技术支持。路面长期性能研究已在多个国家开展，它将对世界各国道路修筑策略与技术的发展起到极大的推动作用。在我国大规模公路建设方兴未艾的今天，顺应世界范围内道路工程技术的发展趋势，开展路面长期性能的研究势在必行。 本文开展了一些关于路面长期性能的前期研究工作，全文共分七章。 第一章为绪论，提出待研究的问题，叙述关于路面长期性能的研究概况，并建构论文框架。 第二章从调查我国高等级公路路面常见损坏类型入手，探讨路面长期性能研究的必要性及其长远意义，分析我国当前进行路面长期性能研究的基础条件和主要障碍。结合国情，提出该项研究应遵循的基本策略和应首先解决的关键基础理论问题，并论述了指导路面长期性能研究的方法论。 第三章依据功能论的思想，阐述路面性能的内涵。针对表征路面性能的四个方面内容，即路面结构承载能力、路面行驶质量、路面行驶安全性和路面破损状况开展研究，探讨适用于高等级公路的路面性能测试方法，从高等级公路沥青路面的功能需求出发，建立了路面性能的评价指标体系，并确定了各指标的分级评价标准。 第四章针对路面结构性能分析和路面设计所关注的路面结构动力响应问题，根据结构动力分析理论，建立了路面结构动力问题的有限元分析模型，研究确定用有限元法模拟路面瞬态响应的求解策略，通过数值计算，对FWD荷载和车轮荷载作用下路面结构响应的一般规律进行研究。 第五章运用均匀设计方法进行计算机辅助试验，对各种结构组合情况的路面动力有限元模型进行了求解。根据人工神经网络原理建立模型，开展路面结构动力响应模拟仿真和路面结构动态参数反分析研究，为进一步分析路面结构动力特性和改进路面结构性能评价策略提供帮助。 路面性能的评价与分析研究 摘要 第六章结合“河南省高速公路路面长期性能”研究项目，选择实体工程，修筑试验路段，制订和实施路面长期性能的现场观测计划；研究开发路面长期性能信息管理系统（LhP IMS）；通过建立神经网络模型，进行数据分析，对路面性能变化过程开展经验仿真研究。 第七章总结全文要点与结论。更多还原

【Abstract】 Pavement Performance reflects the capacities and properties with which pavement serves the passenger and freight transport vehicles. Long-Term Pavement Performance(LTPP) study, as a fundamental research program in roadway engineering area, aims to carry out extensive investigations, statistic, theoretic analysis, tests and experiments; lucubrate on the basic factors that influence pavement performance, such as load, environment, structure, material, construction, maintenance and rehabilitation; discover the regulation how pavement system performs during a long service time; establish systemically integrated engineering theories; provide potent directions and helps for the practice of design, construction, maintenance, rehabilitation, operation and administration of pavements; offer technical supports for increasing pavement lifetime. LTPP, Conducted in many countries, is sure to impulse the development of roadway construction strategy and technology around the world. Be in the ascendant of cosmical highway construction, China is imperative to acclimate the international trend of roadway engineering technology and to carry out the study on LTPP. Some early research work on LTPP is finished in this dissertation and specified in seven chapters. Chapter 1 presents problems, narrate the background of LTPP study and establish the frame of the dissertation. Ordinary pavement distresses on high-grade highways in china, the necessity and long-term significance of LTPP, fundamental conditions and main obstacles of China- LTPP are analyzed in chapter 2. The basic strategy, problems as the key of fundamental theory and methodology of Cbina-LTPP are presented based on current situation of china. Chapter 3 expatiates the intension of pavement performance with function theory, presents study on capacities and properties of pavement, which are structural bearing capacity, running quality, security and distress status . Test methods, index and standards for pavement performance evolution are analyzed according to functional demand for high-grade highways. The dynamic response of pavement structure is the subject of chapter 4 for pavement structural capacity analysis and design. Finite element models are established for this problem based on the theory of dynamic structure analysis; Strategy for pavement transient response solution is studied; The general regulations of pavement response under FWD load and wheel load are analyzed with numerical calculation. Chapter 5 carries out computer-aided-experiment for dynamic responses of different pavement structures, directed by uniform design; conducts simulations for pavement dynamic response and inverse-analysis of structural parameters with Artificial Neural Network(ANN) models; offers assistance for pavement capacity evaluation and further studies. Entity road sections and test sections project are put in practice for the program of LTPP of Expressway in HeNan Province HNLTPPY, with detailed monitoring plan. LTPP information management system(IMS) are developed for this program. The data analysis and empirical simulation of pavement performance are finished upon ANN models in chapter 6. Chapter 7 presents essentials and conclusions of the whole paper.更多还原