Micro-Scale Experimental Approach for the Seismic Performance Evaluation of RC Frames with Improper Lap Splices

Author:

Javed Ali1ORCID,Krishna Chaitanya2ORCID,Ali Khawaja3ORCID,Afzal Muhammad Faheem Ud Din1ORCID,Mehrabi Armin1ORCID,Meguro Kimiro4

Affiliation:

1. Department of Civil and Environmental Engineering, Florida International University, Miami, FL 33174, USA

2. School of Engineering and Technology, Asian Institute of Technology, Pathum Thani 12120, Thailand

3. Transport Development Division, CTI Engineering International, Tokyo 136-0071, Japan

4. Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan

Abstract

Reinforced concrete (RC) frames are an integral part of modern construction as they resist both gravity and lateral loads in beams and columns. However, the construction methodologies of RC frames are vulnerable to non-engineering defects, particularly in developing countries. The most common non-engineering defect occurs due to improper lap splice, which can compromise the structural integrity. This research demonstrates an easy, low-cost, and verifiable experimental technique incorporating micro-concrete to evaluate the seismic performance of a completely engineered RC frame with the defect of improper lap splice. The micro-concrete was prepared by using the locally available material for a target compressive strength and then two scaled-down RC frames (1/16 scale) were prepared, including one proper frame and another with improper lap splice. Finally, these frames were tested on a shake table to study their behavior under various seismic loading conditions. This study quantifies the severity of high-risk structural systems due to non-engineering defects. The experimental results demonstrate that improper lap splice can alter the frame’s damage points, triggering the failure of the whole structure.

Publisher

MDPI AG

Subject

Computer Science Applications,Geotechnical Engineering and Engineering Geology,General Materials Science,Building and Construction,Civil and Structural Engineering

Reference50 articles.

1. Zafar, A. (2009). Response Modification Factor of Reinforced Concrete Moment Resisting Frames in Developing Countries, University of Illinois at Urbana-Champaign.

2. Isler, O. (2008, January 12–17). Seismic Performances and Typical Damages of Beam-Column Joints in the RC Buildings. Proceedings of the 14th World Conference on Earthquake Engineering, Beijing, China.

3. Damages on reinforced concrete buildings due to consecutive earthquakes in Van;Ates;Soil Dyn. Earthq. Eng.,2013

4. Arya, A.S. (February, January 30). Non-engineered construction in developing countries—An approach toward earthquake risk preduction. Proceedings of the 12th World Conference on Earthquake Engineering, Auckland, New Zeland.

5. Seismic risk analysis of urban non-engineered buildings: Application to an informal settlement in Mérida, Venezuela;Castillo;Nat. Hazards,2011

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