Evaluating the Performance of Oversize Threaded Splices with Cyclic Loading Protocol:Experimental study

Subject Areas : Structural Engineering

mohamad reza shokrzadeh ^{1 *} , Taleb Sadeghian ² , Fariborz Nateghi Allahe ³

1 - Department of civil engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran
2 - Department of Earthquake Engineering, Shahid Ashrafi Esfahani University, Esfahan, Iran
3 - Structural Engineering Research Center, International Institute of Earthquake Engineering and Seismology, Tehran, Iran

Received: 2024-05-11 Accepted : 2024-05-29 Published : 2024-07-08

Keywords: Mechanical threaded splice, Ductile Members, Cold rolling, Modifying threaded,

Abstract :

This study aims to evaluate the performance of threaded splices utilizing the oversize method under cyclic loading conditions. Experimental tests were conducted on threaded couplers with enlarged thread diameters to investigate their strength, ductility, and energy absorption characteristics. The results revealed that the oversize-threaded splices exhibited enhanced performance, with reduced stress levels and minimal slippage observed during cyclic loading. The enlarged cross-sectional area near the threads contributed to improved ductility and energy absorption capacity. Moreover, the oversize splices demonstrated a higher ultimate tensile load capacity compared to conventional splices. These findings underscore the effectiveness of the oversize method in enhancing the performance of threaded splices under cyclic loading, rendering them suitable for applications in seismic regions. The outcomes of this study provide valuable insights for designing robust and resilient threaded splices in seismic-resistant structures, contributing to the advancement of construction practices in earthquake-prone areas. Keywords: Mechanical threaded splice, Ductile Members, Cold rolling, Modifying threaded

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