Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Vibration Testing of Truss Members Consisting of Multiple Eyebars for Estimating Axial Load Distribution
Structural members consisting of pin connected steel eyebar tension members (members) with multiple individual eyebars (elements) have a tendency to share the load unequally between elements. However, guidelines on appropriate load sharing assumptions for the evaluation of existing highway bridges are not readily available. The tension in an eyebar is correlated to the natural frequency of the element, and the Manual of Railway Engineering (MRE) provides a procedure to estimate the stress in each element based on measurements of the natural frequency following forced excitation of the element. This paper presents a novel method of measuring the natural frequency of individual eyebars utilizing the built-in accelerometer sensor of smartphones and 3D-printed mounting cases. A case-study is presented where this method was implemented to assess the axial load distribution of eyebars in a large true-pin cantilevered steel truss bridge.
Vibration Testing of Truss Members Consisting of Multiple Eyebars for Estimating Axial Load Distribution
Structural members consisting of pin connected steel eyebar tension members (members) with multiple individual eyebars (elements) have a tendency to share the load unequally between elements. However, guidelines on appropriate load sharing assumptions for the evaluation of existing highway bridges are not readily available. The tension in an eyebar is correlated to the natural frequency of the element, and the Manual of Railway Engineering (MRE) provides a procedure to estimate the stress in each element based on measurements of the natural frequency following forced excitation of the element. This paper presents a novel method of measuring the natural frequency of individual eyebars utilizing the built-in accelerometer sensor of smartphones and 3D-printed mounting cases. A case-study is presented where this method was implemented to assess the axial load distribution of eyebars in a large true-pin cantilevered steel truss bridge.
Vibration Testing of Truss Members Consisting of Multiple Eyebars for Estimating Axial Load Distribution
Lecture Notes in Civil Engineering
Walbridge, Scott (Herausgeber:in) / Nik-Bakht, Mazdak (Herausgeber:in) / Ng, Kelvin Tsun Wai (Herausgeber:in) / Shome, Manas (Herausgeber:in) / Alam, M. Shahria (Herausgeber:in) / el Damatty, Ashraf (Herausgeber:in) / Lovegrove, Gordon (Herausgeber:in) / Chainey, M-A. (Autor:in) / Chaaraoui, M. (Autor:in)
Canadian Society of Civil Engineering Annual Conference ; 2021
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 ; Kapitel: 37 ; 443-449
14.04.2022
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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