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All Journal Journal of Infrastructure Planning and Engineering
Bambang Wedyantaji
National Institute of Technology Malang, East Java, Indonesia
Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering

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Vibration Modeling and Simulation of Braced and Unbraced Steel Structure Ratri Andinisari; Ester Priskasari; Vega Aditama; Bambang Wedyantaji; Rendy Adam Anggriawan
Journal of Infrastructure Planning and Engineering (JIPE) Vol. 2 No. 1 (2023)
Publisher : Master Program of Infrastructure and Environmental Engineering, Postgraduate Program, Warmadewa University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/jipe.2.1.2023.1-6

Abstract

Repeated dynamic loads on multiple stories structure may cause damage in the midst of natural disaster, such as earthquakes and landslides, hence it is necessary to observe how the response occurs. Therefore, this paper studies the performance of two-story steel frame without braces and with inverted V concentric braces. Both frames were given a static and a dynamic load in the form of a sinusoidal load for 2 seconds in the form of forced harmonic vibration. After the dynamic load is turned off, harmonic free vibration applies. Vibration is given to the weakest orthogonal axis on the frame with a frequency of 0,5 Hz; 1,03 Hz; 1.7 Hz. To reduce the deviation between stories that occur due to dynamic loads, bracing is provided as a stiffening element. The test variations are called models 1, 2 and 3 with model 1 unbraced frame and model 2 braced frame with the same load between floors, while model 3 unbraced frame model with weight 2nd floor is 3 times larger than 1st floor. It found that the braced frame has a minimum drift and its drift is enhanced with the increase of load capacity.
Co-Authors Ester Priskasari Ratri Andinisari Rendy Adam Anggriawan Vega Aditama