What is it about?

- Photo‐Node, a new method for assessing beam-to-column joints based on photogrammetric computer vision. - Photo‐Node is a noncontact method used to directly monitoring concrete surfaces, developed to measure the relevant physical parameters of reinforcement concrete beam column joints during experimental tests.

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Why is it important?

- The response of beam-to-column joints is fundamental for structural analysis of reinforcement concrete frames -Monitoring the key parameters of those joints is essential to perform a detailed analysis of the structure - are often difficult to obtain and only a few sections in critical regions are assessed - Methods based on computer vision have been applied to monitoring reinforced concrete structures with excellent results -accuracy achieved and the large quantity of information recorded


- Photo-Node addresses several post-processing features to evaluate joint rotation, joint distortion, principal directions and stresses, cracks pattern, and load path. - Critical sections of the beam, e.g. region of the plastic hinge, can be detailed evaluated - A large amount of data is computed, which results in a properly assess of the joints behavior. - The degree of discretisation achieved enables to identify behaviors impossible to detect using traditional and less discretised approaches - The is an efficient and a wide‐ranging tool to be used in experimental programs

Jónatas Valença
Universidade de Lisboa

Read the Original

This page is a summary of: Method for assessing beam column joints in RC structures using photogrammetric computer vision, Structural Control and Health Monitoring, January 2017, Wiley, DOI: 10.1002/stc.2013.
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