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快速、非接触传感技术的发展为工程师们解决全国迅速老化的底层结构问题提供了很大的帮助。以前的结构物病害评估方法既费力又不方便,而且常常不可靠。但使用雷达、红外热象仪、激光光学、超声波和其它一些新的技术手段却可在仅仅一天之内即能准确地测量成百上千公里路面或几十座桥的桥面。 目前,这些应用技术有的已经商品化,而有的仍在开发研制之中。例如:使用雷达检测路面下的裂隙,采用红外热象仪确认组合屋面或混凝土桥面中的裂缝,利用自动图象处理设备快速地测量道路表面的病害,以及使用激光测记路面的纵剖面分布图并连续测量路面的弯沉。
The development of fast, non-contact sensing technology has provided great help to engineers in addressing the rapidly aging substructure issues in the country. Previous methods of structural disease assessment are laborious and inconvenient, and often unreliable. However, the use of radars, infrared cameras, laser optics, ultrasonics and other new technologies can accurately measure hundreds of thousands of kilometers of pavement or dozens of bridges in less than a day. At present, some of these application technologies have been commercialized, while others are still under development and development. Examples include the use of radar to detect cracks in the pavement, the use of infrared thermography to identify cracks in the composite roof or concrete deck, the rapid measurement of road surface defects using automated image processing equipment, and the longitudinal profile distribution of the pavement using laser markers Figure and continuous measurement of road surface deflection.