International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Effect of Vertical Reinforcement on the Behavior of Masonry Walls Subjected to in Plane Lateral Loading

    ,

Author Affiliations

  • 1 NIT Srinagar J and K INDIA

Res. J. Engineering Sci., Volume 4, Issue (2), Pages 1-6, February,26 (2015)

Abstract

Simple masonry has many a times behaved unsatisfactorily in earthquakes. It may fail under moderate earthquake and more importantly it fails suddenly (brittle failure), thus causing casualties. Since masonry is involved in large number of constructions, especially in rural areas where almost all the constructions are in masonry, research is continuously going on to improve the behavior of masonry under earthquakes (lateral loads). Introduction of reinforcement in the masonry walls ameliorates its behavior under lateral loads by improving the various parameters which may include collapse load (lateral), ductility, and stiffness. The reinforcement provided in masonry can be horizontal or vertical. In this project the effect of vertical reinforcement on the behavior of masonry under lateral loads will be studied. Wall Models of size 1.25mx1.25mx.1m were constructed, two models for each - simple unreinforced masonry and vertically reinforced masonry. The models were tested after 28 days. The results of this research paper showed that vertical reinforcement increases only the ductility of masonry walls without noticeably changing either stiffness or collapse load. Thus the brittle failure of masonry can be avoided by introducing vertical reinforcement.

References

  1. Housner G.W., Behavior of Structures during Earthquakes, Journal of engineering mechanics division, ASCE, , 109-139 (1959)
  2. Chopra A.K., Dynamics of Structures, Prentice Hall, Engelwood, Cliff, New Jersey762(1995)
  3. Duggal S.K., Earthquake Resistant Design, Oxford University Press, 191-237 (2007)
  4. Brzev S., Earthquake resistant confined masonry construction, National information center of earthquake engineering, Indian Institute of Technology Kanpur, (2007)
  5. Aguilar G. and Alcocer S.M., Effect of Horizontal Reinforcement on the Behavior of Confined Masonry Walls under Lateral Loads. Centro Nacional de Prevención Desastres (SEGOB), Mexico, 181, (2001)
  6. IS 1893-1,Criteria for Earthquake Resistant Design of Structures, Bureau of Indian Standards, New Delhi, (2002)
  7. IS 1077, Common burnt clay bricks and specifications, Bureau of Indian Standards, New Delhi, (1992)
  8. IS 2212, Brick work, Code of practice, Bureau of Indian Standards, New Delhi, (1991)
  9. IS 4326:1993, Earthquake resistant design and construction of buildings, Code of practice, Bureau of Indian Standards, New Delhi, (1993)
  10. IS 2250: 1981, Code of practice for preparation and use of masonry mortars, Bureau of Indian Standards, New Delhi (1981)