EFFECT OF IN-PLANE/OUT-OF-PLANE INTERACTION IN INFILL WALLS ON THE FLOOR SPECTRA OF REINFORCED CONCRETE BUILDINGS

2021 ◽  
Author(s):  
Mariano Di Domenico ◽  
Paolo Ricci ◽  
Gerardo M. Verderame
2015 ◽  
Vol 31 (2) ◽  
pp. 921-943 ◽  
Author(s):  
Khalid M. Mosalam ◽  
Selim Günay

Reinforced concrete (RC) frames with unreinforced masonry (URM) infill walls are commonly used in seismic regions around the world. It is recognized that many buildings of this type perform poorly during earthquakes. Therefore, proper modeling of the infill walls and their effect on RC frames is essential to evaluate the seismic performance of such buildings and to select adequate retrofit methods. Using damage observations of RC buildings with URM infill walls from recent earthquakes, this paper presents a new approach to consider in-plane/out-of-plane interaction of URM infill walls in progressive collapse simulations. In addition, the infill wall effect to induce shear failure of columns is simulated with a nonlinear shear spring modeling approach. The research endeavor is accompanied by implementation of the developed modeling aspects in the publicly available open-source computational platform OpenSees for immediate access by structural engineers and researchers.


1982 ◽  
Author(s):  
Hajime Umemura ◽  
Haruo Takizawa

<p>During the last tow decades, remarkable progress has been made toward the better understanding of the performance of reinforced concrete buildings when subjected to destructive earthquake motions. This volume examines the literature with regard to analytical methods for modeling their dynamic failure, and is intended to provide a summary report on the current state of the art.</p> <p>The survey places major emphasis on formulations of a basically empirical nature. Its necessity arises mostly from the complexities inherent in the inelastic and hysteretic response of reinforced concrete. Important aspects are first reviewed for the microscopic or member-by-member modelings, while the interest is then taken in the macroscopic or simple modelings of overall behavior. Their advantages and limitations as well as the directions of future improvement are noted by including simple illustrations. In particular, the examination emphasizes unsatisfactory state of the art for a reliable description of the out-of-plane failure process of structure.</p> <p>An extensive presentation of the bibliography featurs this publication, dealing with the literature up until the middle of 1980 and covering no less than 300 papers. The work will contribute to bringing structural engineers up-to-date with the methods of strong-motion response analysis for reinforced concrete frames.</p>


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