Version 1
: Received: 30 July 2023 / Approved: 31 July 2023 / Online: 31 July 2023 (10:40:07 CEST)
How to cite:
He, X. Stress Redistribution Study and Material Inelasticity and Prestress Loss Coupling Effect in Segmental Concrete Bridges. Preprints2023, 2023072101. https://doi.org/10.20944/preprints202307.2101.v1
He, X. Stress Redistribution Study and Material Inelasticity and Prestress Loss Coupling Effect in Segmental Concrete Bridges. Preprints 2023, 2023072101. https://doi.org/10.20944/preprints202307.2101.v1
He, X. Stress Redistribution Study and Material Inelasticity and Prestress Loss Coupling Effect in Segmental Concrete Bridges. Preprints2023, 2023072101. https://doi.org/10.20944/preprints202307.2101.v1
APA Style
He, X. (2023). Stress Redistribution Study and Material Inelasticity and Prestress Loss Coupling Effect in Segmental Concrete Bridges. Preprints. https://doi.org/10.20944/preprints202307.2101.v1
Chicago/Turabian Style
He, X. 2023 "Stress Redistribution Study and Material Inelasticity and Prestress Loss Coupling Effect in Segmental Concrete Bridges" Preprints. https://doi.org/10.20944/preprints202307.2101.v1
Abstract
The reason for excessive multidecade deflections is still unclear after 70 years of the cantilever method that has been applied in building large-span segmental concrete bridges. The failure of the Koror-Babeldaob bridge gives the author a clue that the reason might be the boundary condition. The asymmetric properties of the bearing and prestress tendon draw the author’s attention. To understand the process of stress redistribution, the virtual stiffness method which is derived from the principle of minimum potential energy was created, and the phenomenon the author suggested named Material Inelasticity and Prestress Loss Coupling Effect is discovered. The unexplainable excessive deflection and prestress loss are found in the new load model. The calculation of excessive deflection is discussed. The new model fits the experience well. The optimization design methods and construction key points are proposed.
Keywords
virtual stiffness method; Material Inelasticity and Prestress Loss Coupling Effect; excessive deflection; Palau bridge; stress redistribution; moment redistribution; boundary condition; cantilever beam; segmental concrete beam
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
