Thermal Effects on the Bearing and Ductility of Tubular RBS Connection: numerical investigation
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
View: 198
This Paper With 11 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_IJE-35-10_008
تاریخ نمایه سازی: 15 تیر 1401
Abstract:
In the present paper, an innovative fire-earthquake resistant joint called high-performance tube (HP-T) connection is presented and numerically validated. This HP-T connection improves the axial and rotational ductility as well as prevents brittle failure. Two series of models were simulated in ABAQUS software. In the first set of models, which was designed for heat simulation, a sequentially coupled thermal-stress analysis was performed to investigate the effects of different parameters such as web and flange tube thickness and the ratio of the applied load. To simulate the fire damage, two probable scenarios were considered: bottom flange tube damage and beam web damage when exposed to combined initial loading and fire. In the second set of models for seismic simulation, the failure mode, hysteretic curves, and strain distribution were analyzed. According to the results, HP-T robust connection not only provides appropriate ductility enhancement in force-variable fire conditions but also withstands at least ۸% inter-story drift without considerable strength reduction.
Keywords:
Authors
yasaman khalilpourazar
Department of Civil Engineering, Maragheh Branch, Islamic Azad University, Maragheh, Iran
Mohammad Ali Lotfollahi-Yaghin
Faculty of Civil Engineering, University of Tabriz
Ahmad Maleki
Department of Civil Engineering, Maragheh Branch, Islamic Azad University, Maragheh, Iran