混凝土应力检测技术研究综述  

Review of Concrete Stress Testing Technologies

作　　者：庄晨旭 张劲泉[1] 蒋含莞[1] 

机构地区：[1]交通运输部公路科学研究院,北京100088

出　　处：《公路交通科技》2016年第3期43-51,共9页Journal of Highway and Transportation Research and Development

基　　金：交通运输部建设科技项目(2013318223040)

摘　　要：由于材质劣化、设计施工缺陷和结构损伤等原因,大量在役混凝土结构都存在安全隐患,目前主要是对混凝土结构的裂缝、空洞、内部钢筋锈蚀情况等进行检测,以上参数并不能直接反映混凝土结构的真实受力状态。然而,工作应力是混凝土结构可靠性的重要指标,若能精确测量混凝土结构的工作应力,则可以准确评估混凝土结构的受力状态。近几十年来,科学工作者对混凝土应力检测方法进行了大量的研究,在理论研究和实际工程应用方面都取得了不错的进展。本文分别对局部破损检测技术和无损检测技术的现状进行总结,详细分析应力释放法、声发射技术、超声波检测技术的优点与不足,并指出今后所需要解决的问题。Due to material quality degradation, designing and construction defect and structural damage, a large amount of concrete structures in-service are in poor condition. Recent testing methods are emphasized on detection of cracks, cavities and reinforcement corrosion, which cannot directly reflect the real stress state of concrete structures. However, working stress is a symptom of the concrete structure safety. If it can be measured accurately, the stress state of concrete structures can also be assessed precisely. In recent decades, researchers have done a lot of work on concrete stress testing methods, and made progresses both in theoretical researches and practical engineering applications. The current situation of local damage detection technology and nondestructive testing technology is summarized respectively. The advantages and disadvantages of stress release method, acoustic emission technology and ultrasonic testing technology are analyzed in detail. The problems which need to be solved in the future are also put forward.

关 键 词：桥梁工程 混凝土应力 应力释放法 超声波检测技术 综述 

分 类 号：TU414[建筑科学—岩土工程]