首页> 外文OA文献 >The measurement of full scale structural beam-column connection deformation using digital close range photogrammetry techniqueud
【2h】

The measurement of full scale structural beam-column connection deformation using digital close range photogrammetry techniqueud

机译:数字近距离摄影测量技术测量结构梁-柱连接结构的全尺寸 ud

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Measurement and monitoring of structural components such as beams and columns under loading are important in structural analysis and design assessment. Presently, the assessment on structural components on deformation or displacement measurement is carried out through LVDTs or dial gauges. The LVDTs or dial gauges were installed in contact with the udstructural components, also known as contact method. However, present contact method is subjected to some limitations such as s displacement points of measurement are highly depend on the position of LVDTs available, reliability of LVDTs and dial gauges to measure during the udexperiments due to possibility of damage sensors and consumption of time on the installation the sensors. Due to the limitations of contact method, this study demonstrates the use of a noncontact method using digital close range photogrammetry technique to measure the deformational behaviour of full-scale structural beams and columns. In this study, a full-scale load tests on structural components were performed under laboratory conditions. A series of uddigital images of the structural beams and columns under various loads were captured using Nikon DSLR cameras. The digital images then processed and analyzed using digital close range photogrammetric technique to measure and extract the magnitude of the structural beam and udcolumn displacements. The deformation and displacement of beam and columns have been validated by comparing the photogrammetric outputs against the results obtained from the LVDTs. The statistical analysis shows the differences obtained between the photogrammetric technique and contact method used were not significant.
机译:载荷下对梁和柱等结构部件的测量和监控在结构分析和设计评估中很重要。目前,通过LVDT或千分表对结构部件的变形或位移测量进行评估。 LVDT或千分表的安装与结构组件接触,也称为接触法。然而,当前的接触方法受到一些限制,例如,测量的位移点高度取决于可用的LVDT的位置,LVDT的可靠性以及在实验期间测量百分表的可靠性,这是由于损坏传感器的可能性和消耗的时间所致。安装传感器。由于接触法的局限性,本研究演示了使用非接触法和数字近程摄影测量技术来测量全尺寸结构梁和柱的变形行为。在这项研究中,在实验室条件下对结构部件进行了全面的载荷测试。使用尼康DSLR相机拍摄了各种载荷下结构梁和柱的一系列 uddigital数字图像。然后,使用数字近距离摄影测量技术对数字图像进行处理和分析,以测量和提取结构梁的大小和 udcolumn位移。通过将摄影测量结果与从LVDT获得的结果进行比较,可以验证梁和柱的变形和位移。统计分析表明,摄影测量技术和所用接触方法之间的差异不显着。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号