寒区机场水泥混凝土道面剩余寿命评估预测研究
发布时间：2018-07-27 11:06
【摘要】：我国目前的机场大多数是水泥混凝土道面机场。许多机场修建年限都比较早,在环境因素和飞机荷载的共同作用下,机场道面已经产生了严重的破损现象。位于寒区的机场道面,由于更加恶劣的环境因素,破损现象更加严重。评估预测机场道面的剩余使用寿命,是机场进行维修改建的依据,定期进行评估预测,可以避免道面板突然断裂等重大危害的发生,保障飞机的安全起降。本文根据寒区机场的现场调查数据,构建了机场道面的有限元模型,然后分别基于不同的原理计算了机场水泥混凝土道面的剩余使用寿命。统计不同寒区机场的病害数据,分析其道面病害原因;根据机场道面的现场检测数据,建立了机场道面的有限元模型,并进行了应力分析。根据规范提出的逆设计法计算机场道面的剩余使用寿命,证明了计算方法对道面板厚的敏感性,以及评价机型存在的问题,证明该方法存在问题,引入通行覆盖率理论对原有的计算方法进行了改进。针对逆设计法存在的问题,采用累积损伤原理计算机场道面的剩余使用寿命,根据寒区机场道面的破坏特点,利用机场道面的实际检测数据确定道面的剩余强度,从而对原有的计算方法进行改进。
[Abstract]:Most of the airports in China are cement concrete pavement airports. Many airports are built earlier than others. Due to the combined effect of environmental factors and aircraft loads, the airport pavement has been seriously damaged. In the cold area of the airport pavement, due to worse environmental factors, damage is more serious. Evaluating and forecasting the remaining service life of airport pavement is the basis for airport maintenance and reconstruction. Periodic evaluation and prediction can avoid the occurrence of major hazards such as sudden rupture of the pavement surface and ensure the safe take-off and landing of the aircraft. In this paper, based on the field investigation data of airport in cold area, the finite element model of airport pavement is constructed, and the residual service life of airport cement concrete pavement is calculated based on different principles. According to the field detection data, the finite element model of the airport pavement is established, and the stress analysis is carried out. According to the inverse design method proposed in the specification, the residual service life of the airport pavement is calculated, and the sensitivity of the calculation method to the thickness of the track panel is proved, as well as the problems existing in the evaluation model are proved, and the problems in this method are proved. The original calculation method is improved by introducing the theory of traffic coverage. Aiming at the problems existing in the inverse design method, the residual life of the computer field pavement is determined by the cumulative damage principle. According to the damage characteristics of the airport pavement in cold area, the residual strength of the road surface is determined by using the actual detection data of the airport pavement. Thus, the original calculation method is improved.
【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】：2017
【分类号】：U416.216;V351.11
本文编号：2147623
[Abstract]:Most of the airports in China are cement concrete pavement airports. Many airports are built earlier than others. Due to the combined effect of environmental factors and aircraft loads, the airport pavement has been seriously damaged. In the cold area of the airport pavement, due to worse environmental factors, damage is more serious. Evaluating and forecasting the remaining service life of airport pavement is the basis for airport maintenance and reconstruction. Periodic evaluation and prediction can avoid the occurrence of major hazards such as sudden rupture of the pavement surface and ensure the safe take-off and landing of the aircraft. In this paper, based on the field investigation data of airport in cold area, the finite element model of airport pavement is constructed, and the residual service life of airport cement concrete pavement is calculated based on different principles. According to the field detection data, the finite element model of the airport pavement is established, and the stress analysis is carried out. According to the inverse design method proposed in the specification, the residual service life of the airport pavement is calculated, and the sensitivity of the calculation method to the thickness of the track panel is proved, as well as the problems existing in the evaluation model are proved, and the problems in this method are proved. The original calculation method is improved by introducing the theory of traffic coverage. Aiming at the problems existing in the inverse design method, the residual life of the computer field pavement is determined by the cumulative damage principle. According to the damage characteristics of the airport pavement in cold area, the residual strength of the road surface is determined by using the actual detection data of the airport pavement. Thus, the original calculation method is improved.
【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】：2017
【分类号】：U416.216;V351.11
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