Experimental Study of the Seismic Behavior of Two-Leaf Masonry Wall with and Without Confinement

Maison Puma, Edison Guerrero, Juan Copa, Fidel Daniel Copa Pineda

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The historic monuments from the viceregal period in the south of Peru are the great part of the historic centers in the most important cities. They were mostly built with “sándwich” walls. They are built with volcanic stones which are parallelepiped in shape, and an intermediate sand and cal filling. During seismic waves these walls have shown the highest vulnerability. The main objective of this study is to know the behavior of unreinforced and reinforced masonry walls with concrete confinement, under the monotonic lateral test comparing them by increasing the capacity of resistance and the deformation of the reinforced walls. The experimental tests consisted in to try out three walls on the scale of 1/10, each with a different precompression load; these were tested at 0.5% drift, corresponding to a moderate earthquake. After this test, the reinforced concrete confinement frame was inserted, and the 3 samples were retested until they collapse. The 3 walls were tested under lateral load without reinforcement, there was a failure due to the flexion at the base by a drift of 0.04% and it lost stability. The reinforced wall increased its capacity of resistance and deformation, it shows an adequate ductility for severe earthquakes, being the drift got for the failure by flexion at 0.06% and a drift for a failure by cut at 0.8%.

Original languageEnglish
Title of host publicationRILEM Bookseries
PublisherSpringer Netherlands
Pages1697-1705
Number of pages9
DOIs
StatePublished - 2019

Publication series

NameRILEM Bookseries
Volume18
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852

Bibliographical note

Funding Information:
Acknowledgments. This paper based on the results of the project thesis: ‘Seismic analysis of Grau bridge and structural reinforced’ [6] carried out by the UNSA laboratory, The authors would like to acknowledge the contributions of students and graduate students researchers from the National University of San Agustin. The research presented herein was supported by the National University of San Agustin through the grant 0061-2016.

Publisher Copyright:
© 2019, RILEM.

Keywords

  • Confined masonry
  • Experimental
  • Heritage
  • Lateral load
  • Small-scale
  • Strengthening
  • Two-leaf

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