Version 1
: Received: 12 April 2024 / Approved: 15 April 2024 / Online: 15 April 2024 (11:51:50 CEST)
How to cite:
Jonaidi, M.; Kaplan, A.; Keyvanfar, A. Innovative Approach and Challenges in the Demolition of Large-Span Post-tensioned Beams: Insights from a Case Study. Preprints2024, 2024040884. https://doi.org/10.20944/preprints202404.0884.v1
Jonaidi, M.; Kaplan, A.; Keyvanfar, A. Innovative Approach and Challenges in the Demolition of Large-Span Post-tensioned Beams: Insights from a Case Study. Preprints 2024, 2024040884. https://doi.org/10.20944/preprints202404.0884.v1
Jonaidi, M.; Kaplan, A.; Keyvanfar, A. Innovative Approach and Challenges in the Demolition of Large-Span Post-tensioned Beams: Insights from a Case Study. Preprints2024, 2024040884. https://doi.org/10.20944/preprints202404.0884.v1
APA Style
Jonaidi, M., Kaplan, A., & Keyvanfar, A. (2024). Innovative Approach and Challenges in the Demolition of Large-Span Post-tensioned Beams: Insights from a Case Study. Preprints. https://doi.org/10.20944/preprints202404.0884.v1
Chicago/Turabian Style
Jonaidi, M., Adam Kaplan and Ali Keyvanfar. 2024 "Innovative Approach and Challenges in the Demolition of Large-Span Post-tensioned Beams: Insights from a Case Study" Preprints. https://doi.org/10.20944/preprints202404.0884.v1
Abstract
Large-span post-tensioned (PT) beams play a crucial role in maximizing the benefits of post-tensioning techniques. Bonded and unbonded systems are prevalent, with the latter being more widespread in the United States. While bonded systems are advantageous for creating long spans when multiple tendons are grouped in ducts, limited literature exists on their demolition. In a case study, this paper addresses the unique challenge of demolishing large-span bonded post-tensioned beams due to a building's functional change. Emphasizing insights for engineers, it explores the use of cutting and dismantling methods, considering the presence of prestressed cables. The demolition process is distinctive due to the presence of numerous pre-stressed cables along the beams, necessitating a specialized and cautious cutting approach. This is accomplished through the use of a drilling technique that selectively distresses the tendons, ensuring they are not all affected simultaneously. An intriguing observation discussed in this paper pertains to the occurrence of horizontal cracks accompanied by loud sounds following the drilling process, offering insights from the design perspective of PT systems. The paper details an innovative method for safely demolishing large-span bonded PT beams, using ground-penetrating radar and computer models to navigate structural complexities and ensure nearby structures' safety.
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.
