RESEARCH ARTICLE


Finite Element Modeling and Mechanical Behavior of Masonry-Infilled RC Frame



Hongyu Deng1, *, Baitao Sun1, 2
1 College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
2 Earthquake Administration, Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earth-quake Administration, Harbin 150080, China


Article Metrics

CrossRef Citations:
0
Total Statistics:

Full-Text HTML Views: 2148
Abstract HTML Views: 951
PDF Downloads: 394
ePub Downloads: 212
Total Views/Downloads: 3705
Unique Statistics:

Full-Text HTML Views: 1047
Abstract HTML Views: 581
PDF Downloads: 282
ePub Downloads: 155
Total Views/Downloads: 2065



© Deng and Sun; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China; Tel:+86-13674668201; E-mail: dengblue@163.com


Abstract

During the analysis of reinforced concrete structures, the infill wall is usually simplified as a diagonal inclined strut to facilitate finite element modeling calculations. However, the actual seismic damage and single frame-filled wall pushover experimental results show that when the earthquake shear force is huge, the top of the infill wall and the beam–column connections are usually, thus the path of the force transfer will be changed. Based on this actual failure phenomenon, a new calculation model which has different contact position between the equivalent bracing walls and the frame columns is generated. Thus, the force analysis is given based on this model, the formulae for calculating the equivalent width of bracing walls, the shear bearing capacity of the wall-filled frame, and the infill wall’s actual participation in the stiffness. A finite element simulation method by ABAQUS is used to determine an empirical formula for calculating the reasonable contact position between the equivalent bracing walls and the frame columns. The verification results show that the finite element model presented in this paper is more reasonable, and the stiffness and shear resistance of infill wall should not be neglected. The calculation formula of stiffness of infill wall presented in this paper is coincided with seismic code. But the calculation formula of shear resistance of infill wall presented in seismic code is higher than the actual value, so it is suggested that calculation formula presented in this paper should be accepted.

Keywords: Bottom frame structure, finite element modeling, infill wall, reinforced concrete frame, shear resistance, stiffness.