PSI - Issue 70

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ScienceDirect

Procedia Structural Integrity 70 (2025) 247–254

Structural Integrity and Interactions of Materials in Civil Engineering Structures (SIIMCES-2025) Experimental Studies on the Performance of Laced Reinforced Concrete Beam Under Reverse Cyclic Loading Blessy Grant C J a,* , Murugesan R b , Anandavalli N c a Civil Engineering, Government College of Engineering (IRTT), Erode- 631316, Tamil Nadu, India Abstract Buildings, when subjected to any hazardous phenomena which affects their ductility and durability behaviour, they lose their service life and become unusable. Any kind of structural deterioration becomes a critical issue when the building is located in an earthquake prone area. Therefore, engineering intervention in buildings and structures is crucial to progress in disaster prevention. The primary aim is to reduce the probability of progressive collapse. Beam column joint failures are common in earthquakes, especially in buildings where these joints are critical components for transferring loads between horizontal beams and vertical column. Laced Reinforced Concrete (LRC) has properties that make it promising for shock-resistant structures. While there is a lot of existing research on seismic-resistant beams, there is limited literature available regarding LRC beams, which are important for enhancing the behavior of RC structures and reducing the risk of sudden structural failures under seismic loading. The study involves understanding the structural performance of the three beam specimens such as LRC 45, LRC 60 and conventional concrete beam RC 90 under reverse cyclic loading. Theoretical analysis of the beam is done using STAAD.Pro Software. The Geometric details and the reinforcements were provided based on the theoretical analysis. LRC 45 displayed superior crack resistance, higher ductility, and substantial energy dissipation, making it more resilient. It is revealed when compared to LRC 60 and RC 90, LRC 45 is more efficient with respect to ductility and able to provide adequate shear resistance under reverse cyclic loading. LRC 45 is the optimal choice for high-load, high-reliability applications where maximum safety and minimal deformation are required. © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers b Civil Engineering, Nandha Engineering College, Erode-638052, Tamil Nadu, India c CSIR- Structural Engineering Research Centre, Chennai- 600113, Tamil Nadu, India

Keywords: Laced Reinforced Concrete; Enhanced crack resistance; concrete beam; cyclic load.

* Corresponding author. Tel.: +91-8098526599. E-mail address: blessycjn@gmail.com

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers 10.1016/j.prostr.2025.07.050