Experimental and Numerical Study of Outside Strengthening with Precast Bolt-Connected Steel Plate–Reinforced Concrete Frame-Brace
Publication: Journal of Performance of Constructed Facilities
Volume 33, Issue 6
Abstract
This paper presents an outside strengthening method of existing frame structures with a precast bolt-connected steel plate–reinforced concrete (PBSPC) frame-brace. The working principle and advantages of the PBSPC frame-brace are introduced. To verify the retrofitting effectiveness of the upgrade system, quasi-static tests were conducted for three groups. The results showed that the peak load reached almost 3.6 times that of the nonstrengthening conditions, accompanied by larger initial stiffness and smaller lateral displacement. Numerical simulation models that showed ideal accuracy with the test results were presented based on Open System for Earthquake Engineering Simulation (OpenSees) software. Furthermore, parametric analysis was performed to demonstrate the optimization factors of the proposed upgrade technology, including, for example, brace height, steel plate size, and brace position. The proposed method plays a significant role in system-level upgrading and provides references for future studies due to assembly convenience.
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Acknowledgments
The authors wish to express their sincere appreciation to the National Key Research and Development Program of China (Grant No. 2016YFC0701400), the National Natural Science Foundation of China (Grant Nos. 51525801, 51708106, and 51838004), and the Natural Science Foundation of Jiangsu Province (Grant No. BK20170680) for their financial support.
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Published In
Journal of Performance of Constructed Facilities
Volume 33 • Issue 6 • December 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Nov 1, 2018
Accepted: Apr 15, 2019
Published online: Sep 28, 2019
Published in print: Dec 1, 2019
Discussion open until: Feb 28, 2020
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