Examination of Anchorage of Mesh Wire on Seismic Response of Infilled Walls in RC Frames

  • Ali Al-Maliki Directorate of Education Planning, Ministry of Education, Iraq.
  • Mohammed Sahib Mohammed General Directorate of Education Baghdad Karkh Second, Ministry of Education, Iraq
  • Maha Al-Soudani Civil Engineering Department, College of Engineering, Mustansiriyah University, Iraq
  • Haifaa Nasser Husein Civil Engineering Department, University of Technology, Iraq

Abstract

The infill walls may either respond out of infill plane or crush in a brittle manner during the first stages of earthquakes and, accordingly, they may lose their positive effects. For this reason, the strengthening of infill walls before a design earthquake or repair and strengthening of walls after they survive strong ground motion with minor or moderate damage is typical in practice. The effect of the addition and strengthening of infill walls on the behavior of reinforced concrete structures is investigated. The infill walls are strengthened using a mesh reinforcement and plaster. For this purpose, five one-story, single bay and ½ scaled reinforced concrete frames are produced. Of the frames, one is built without infill, one with bare infill wall and three with strengthened infill wall. The difference among the strengthened frames is the parameters of anchorage utilized between the infill wall and frame members. The specimens are tested using reversible cyclic loading. The test results yield the lateral load-deformation, envelope curve-lateral displacement and stiffness-drift values and other graphics of the frame buildings considered. From the results of this research, the influence of the addition of the infill wall and strengthening procedure of the wall on the building behavior is discussed.

Published
2021-10-05
Section
Civil Engineering (1)