Evaluation and sensitivity of pavement-subgrade systems

路面-路基系统的评估和敏感性

• 批准号: 5795-2008
• 负责人: Stolle, Dieter
• 金额: $ 1.38万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=505055
• 关键词: Evaluation; sensitivity; pavement; subgrade; systems

The health of a country's road network is of considerable importance to its economy. In most of the industrialized world, the network is fairly well established, thus emphasis has shifted toward monitoring, maintaining and improving the existing infrastructure. Pavements deteriorate gradually over time due to repetitive traffic loading and environmental factors such as moisture and freeze-thaw cycles. Given the increase in traffic volume and wheel loads, it has become increasingly important to develop: materials that can better resist damage associated with the traffic and climatic conditions; and new design and maintenance tools that aid in monitoring the road infrastructure and developing cost effect solutions with respect to maintenance strategies and rehabilitation. The new mechanistic-empirical approach for pavement analysis and design requires more accurate estimates of the material response under the action of simulated traffic loading, taking into account variations in moisture and temperature conditions.

一个国家道路网络的健康状况对其经济至关重要。 在大多数工业化国家，网络已经相当完善，因此重点已转向监控、维护和改进现有基础设施。 由于重复的交通负荷和湿度和冻融循环等环境因素，路面随着时间的推移逐渐恶化。 鉴于交通量和车轮负载的增加，开发能够更好地抵抗与交通和气候条件相关的损坏的材料变得越来越重要；新的设计和维护工具，有助于监测道路基础设施并制定维护策略和修复方面的成本效益解决方案。 用于路面分析和设计的新机械经验方法需要更准确地估计模拟交通荷载作用下的材料响应，同时考虑湿度和温度条件的变化。