桥梁智能检测新技术及应用.ppt

五、结论与展望 Conclusions 针对荷载试验应变测试中存在的问题与不足，研发了相对应变测试的新型多用途应变传感器，可实现混凝土、钢结构、圬工结构单向及多向应变测试，也可应用于裂缝监测及微小位移监测。具有精度高、稳定性好、受环境影响小、安装方便、反复使用等突出优点。 New multi-purpose strain sensor was developed, which can realize the unidirectional and multidirectional strain measurement of concrete, steel, and masonry structure. It can also be applied to crack monitoring and tiny displacement monitoring, with the advantages of high precision, good stability, less environmental impact, easy installation, repeated use, etc. Intelligent Bridge Inspection Technologies and Their Application 提出了一种基于图像法的远距离挠度测试系统，可实现桥梁静、动态挠度远距离、非接触式精确测量，提高了挠度测试效率，也可应用于桥梁施工监控及运营期间挠度长期监测。 A method based on image distance deflection test system was proposed, and it can be used to measure long distance and non-contact dynamic and static deflections of the bridge. The efficiency of the deflection test was improved, and it can also be applied to bridge construction monitoring and long-term deflection monitoring during operation. Intelligent Bridge Inspection Technologies and Their Application 谢 谢！ Thanks! Intelligent Bridge Inspection Technologies and Their Application * * * * * * 桥梁智能检测新技术及应用 　 旧桥检测与加固技术交通行业重点实验室 长安大学结构智能检测技术研究所 2019年3月 赵 煜 Intelligent Bridge Inspection Technologies and Their Application Intelligent Bridge Inspection Technologies and Their Application 研发背景 Background 　 我国公路桥梁现状和发展对荷载试验测试方法提出更高要求。 The development of bridges and technical progress need higher requirements on load test methods. 传统应变和挠度测试方法存在缺陷和不足，无法满足复杂环境下的大跨径桥梁静动力性能测试。 Defects and deficiencies are found in the traditional strain and deflection testing methods. 结合当前科技发展现状，主要开展了应变和挠度测试新方法的研究 New methods of strain and deflection testing were developed. Intelligent Bridge Inspection Technologies and Their Application 机械式应变测量方法 Mechanical strain measurement method 常用应变测试方法 利用百分表或千分表测量变形前后测试标距内的距离变化而得到构件测试标距内的平均应变。其主要优点是读数直观、环境适应能力强、可重复性使用等；但缺点也是显而易见的，因此在桥梁应变测试中很少使用。 Measure the distance change within the measuring mark distance before