Assessment of flexural stiffness and load carrying capacity using substructural system

Jamali, S. and Koo, K. Y. and Chan, T. H. T. and Nguyen, A. and Thambiratnam, D. P. (2018) Assessment of flexural stiffness and load carrying capacity using substructural system. In: 8th International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII 2017): Structural Health Monitoring in Real-World Application, 5-8 Dec 2017, Brisbane, Australia.

Abstract

The evaluation philosophy of an existing structure must differ from the design philosophy of a new structure. Many parameters are related to the structural properties and among them, stiffness and boundary conditions are governing factors affecting the resistance of the structure to external loading. However, due to the aging and deterioration of structures, effects of boundary conditions change over time and it becomes intricate to understand their current condition for structural assessment. This study was set out to assess the feasibility of estimating flexural stiffness in beam-like structures using substructural bending rigidity identification (SBI) method when no information about 'as-is' fixity of boundary conditions is available. The results of numerical and experimental analyses showed that the SBI method accurately estimates the flexural stiffness of various beam profiles having unknown boundary conditions. It was found that using estimated stiffness, analytical model can be tuned with updated support fixities and structural and modal characteristics, which are then used for detection of the critical member, worst load effect and evaluation of serviceable load carrying capacity. Findings from this study provided evidence that SBI can be efficiently implemented as a short-term monitoring tool with easy testing setup for in-operation structural integrity assessment of beam-type elements. © 2017 International Society for Structural Health Monitoring of Intelligent Infrastrucure.


Statistics for USQ ePrint 36681
Statistics for this ePrint Item
Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher. This conference is the largest conference in the field of Structural Health Monitoring. Its proceedings are indexed by Scopus and ranked in Scimago: https://www.scimagojr.com/journalsearch.php?q=International+Conference+on+Structural+Health+Monitoring+of+Intelligent+Infrastructure
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 July 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 July 2013 -)
Date Deposited: 05 Jul 2019 01:09
Last Modified: 05 Jul 2019 05:01
Uncontrolled Keywords: beam; boundary condition; load carrying capacity; load rating; stiffness; substructural system
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
URI: http://eprints.usq.edu.au/id/eprint/36681

Actions (login required)

View Item Archive Repository Staff Only