Experimental and Field Performance of PP Band–Retrofitted Masonry: Evaluation of Seismic Behavior
Publication: Journal of Performance of Constructed Facilities
Volume 33, Issue 1
Abstract
Unreinforced masonry (URM) buildings exhibited extreme vulnerability during past earthquakes, although these are shelters for a majority population in many earthquake-prone developing countries. Most of the current retrofitting techniques used for such structures are either expensive or require highly skilled labor or sophisticated equipment for implementation. On the other hand, the retrofitting technique proposed in this paper is economical and easy to apply. This paper aims at examining the performance of the retrofitting technique using polypropylene (PP) band. The displacement-controlled lateral deformation has been investigated experimentally. The monotonic load-displacement behaviors of a URM wall and the wall retrofitted with PP band are compared. It was found that the URM wall retrofitted by PP band improves the ductility and energy absorption capacity by three and two times, respectively. Performance of a full-scale masonry building retrofitted with PP band in Nepal during the last Gorkha earthquake of April 25, 2015, has also been presented in this paper. It was observed that the PP band–retrofitted masonry building survived, whereas many nearby buildings experienced severe damage and some of them collapsed. This study demonstrates the efficacy and practicability of use of PP band for improving seismic resistance of a URM structure.
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Acknowledgments
The authors thank the partial financial support given to them by the Natural Sciences and Engineering Research Council of Canada (NSERC) located in Ottawa, ON, Canada. The authors also sincerely thank Lucian Pop and Matthew St. Louis for their help in laboratory work at the University of Windsor. Finally, special gratitude and thanks are owed to Josh Macabuag for providing the photos of the performance of the URM in Nepal.
References
Bhattacharya, S., S. Nayak, and S. C. Dutta. 2014. “A critical review of retrofitting methods for unreinforced masonry structures.” Int. J. Dis. Risk Reduct. 7: 51–67. https://doi.org/10.1016/j.ijdrr.2013.12.004.
CSA (Canadian Standards Association). 2014. Design of masonry structures. S304-14. Mississauga, ON: CSA.
Dar, A. M., S. M. Umair, M. Numada, and K. Meguro. 2014. “Reduction of PP-band mesh connectivity for masonry structure retrofitting.” J. Jpn. Soc. Civ. Eng. Struct. Eng. Earthquake Eng. 70 (4): 586–595. https://doi.org/10.2208/jscejseee.70.I_586.
Dutta, S. C., P. S. Mukhopadhyay, R. Saha, and S. Nayak. 2015. “2011 Sikkim earthquake at eastern Himalayas: Lessons learnt from performance of structures.” Soil Dyn. Earthquake Eng. 75: 121–129. https://doi.org/10.1016/j.soildyn.2015.03.020.
Dutta, S. C., S. Nayak, G. Acharjee, S. K. Panda, and P. K. Das. 2016. “Gorkha (Nepal) earthquake of April 25, 2015: Actual damage, retrofitting measures and prediction by RVS for a few typical structures.” Soil Dyn. Earthquake Eng. 89: 171–184. https://doi.org/10.1016/j.soildyn.2016.08.010.
Macabuag, J., R. Guragain, and S. Bhattacharya. 2012. “Seismic retrofitting of non-engineered masonry in rural Nepal.” Proc. Inst. Civ. Eng. Struct. Build. 165 (6): 273–286. https://doi.org/10.1680/stbu.10.00015.
Mayorca, P., and K. Meguro. 2003. “Efficiency of polypropylene bands for the strengthening of masonry structures in developing countries.” In Proc., 5th Int. Summer Symp., 125–128. Tokyo: JSCE.
Mayorca, P., and K. Meguro. 2004. “Proposal of an efficient technique for retrofitting unreinforced masonry dwellings.” In Proc., 13th World Conf. on Earthquake Engineering. Vancouver, BC, Canada.
Mayorca, P., N. Sathiparan, G. Ramesh, and K. Meguro. 2006. “Comparison of the seismic performance of different strength masonry structures retrofitted with PP-band meshes.” In Proc., 5th Int. Symp. on New Technologies for Urban Safety of Mega Cities in Asia, 535–544. Thailand.
Meguro, K., P. Mayorca, N. Sathiparan, R. Guragain, and N. Nesheli. 2005. “Shaking table tests of 1/4 scaled masonry models retrofitted with PP-band meshes.” In Proc., 3rd Int. Symp. on New Technologies for Urban Safety of Mega Cities in Asia, 9–18. Singapore.
Meguro, K., N. Sathiparan, K. Sakurai, and M. Numada. 2012. “Shaking table test of two-story masonry house model retrofitted by PP-band mesh.” In Proc., 15th World Conf. on Earthquake Engineering. Portugal: Sociedade Portuguesa de Engenharia Sismica.
Murty, C. V. R., J. N. Arlekar, D. C. Rai, H. B. Udasi, and D. Nayak. 2002. “Masonry structures.” Supplement, Earthquake Spectra 18 (S1): 187–224. https://doi.org/10.1193/1.2803912.
Murty, C. V. R., D. C. Rai, S. K. Jain, H. B. Kaushik, G. Mondal, and S. R. Dash. 2006. “Performance of structures in the Andaman and Nicobar Islands (India) during the December 2004 great Sumatra earthquake and Indian Ocean tsunami.” Supplement, Earthquake Spectra 22 (S3): 321–354. https://doi.org/10.1193/1.2206122.
Nayak, S., and S. C. Dutta. 2016a. “Failure of masonry structures in earthquake: A few simple cost effective techniques as possible solutions.” Eng. Struct. 106: 53–67. https://doi.org/10.1016/j.engstruct.2015.10.014.
Nayak, S., and S. C. Dutta. 2016b. “Improving seismic performance of masonry structures with openings by polypropylene bands and L-shaped reinforcing bars.” J. Perform. Constr. Facil. 30 (2): 04015003. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000733.
Saleem, M. U., M. Numada, M. N. Amin, and K. Meguro. 2016. “Seismic response of PP-band and FRP retrofitted house models under shake table testing.” Constr. Build. Mater. 111: 298–316. https://doi.org/10.1016/j.conbuildmat.2016.02.073.
Sathiparan, N., P. Mayorca, and K. Meguro. 2012. “Shake table tests on one-quarter scale models of masonry houses retrofitted with PP-band mesh.” Earthquake Spectra 28 (1): 277–299. https://doi.org/10.1193/1.3675357.
Sathiparan, N., P. Mayorca, K. Nesheli, G. Ramesh, and K. Meguro. 2005. “Experimental study on in-plane and out-of-plane behavior of masonry wallettes retrofitted by PP-band meshes.” Seisan Kenkyu Bimonthly J. Inst. Ind. Sci. 57 (6): 26–29.
Sathiparan, N., P. Mayorca, K. Nesheli, G. Ramesh, and K. Meguro. 2006. “Experimental study on unburned brick masonry wallettes retrofitted by PP-band meshes.” Seisan Kenkyu Bimonthly J. Inst. Ind. Sci. 58 (3): 301–304.
Sathiparan, N., and K. Meguro. 2011. “Seismic behavior of low earthquake-resistant arch shaped roof masonry houses retrofitted by PP-band meshes.” Pract. Period. Struct. Des. Constr. 17 (2): 54–64. https://doi.org/10.1061/(ASCE)SC.1943-5576.0000113.
Sathiparan, N., and K. Meguro. 2013. “Shear and flexural bending strength of masonry wall retrofitted using PP-band mesh.” Constructii 14 (1): 3–12.
Sathiparan, N., and K. Meguro. 2015. “Strengthening of adobe houses with arch roofs using tie-bars and polypropylene band mesh.” Constr. Build. Mater. 82 (1): 360–375. https://doi.org/10.1016/j.conbuildmat.2015.02.071.
Sathiparan, N., K. Sakurai, M. Numada, and K. Meguro. 2013. “Experimental investigation on the seismic performance of PP-band strengthening stone masonry houses.” Bull. Earthquake Eng. 11 (6): 2177–2196. https://doi.org/10.1007/s10518-013-9502-z.
Tang, A., et al. 2006. “Lifeline systems in the Andaman and Nicobar Islands (India) after the December 2004 great Sumatra earthquake and Indian Ocean tsunami.” Supplement, Earthquake Spectra 22 (S3): 581–606. https://doi.org/10.1193/1.2205874.
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Published In
Journal of Performance of Constructed Facilities
Volume 33 • Issue 1 • February 2019
Copyright
©2018 American Society of Civil Engineers.
History
Received: Feb 9, 2017
Accepted: Jul 10, 2018
Published online: Oct 27, 2018
Published in print: Feb 1, 2019
Discussion open until: Mar 27, 2019
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