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Rope mesh as a seismic reinforcement for two-storey adobe buildings

Bulletin of Earthquake Engineering volume 20, pages 3863–3888 (2022)Cite this article

Abstract

Throughout the world, millions of people are at risk because they live in unreinforced earthen dwellings, which have consistently shown extremely poor structural behaviour during earthquakes. Every single earthquake occurring in these areas has caused unacceptable loss of life, injuries, and property damage. Earthquakes are recurrent and construction damage is cumulative. It is urgent, therefore, to devise low-cost, easy-to-implement seismic reinforcement systems and to make them available to the actual dwellers. A group of researchers at the Pontificia Universidad Católica del Perú has been working towards that goal, especially on improving the seismic capacity of one-storey adobe dwellings. They have proposed construction methodologies for a seismic reinforcement system consisting of a mesh of nylon ropes that confines all earthen walls. This reinforcement system would control the wall displacements and prevent the overturning of wall portions that may occur due to seismic shaking. To validate the effectiveness of the nylon rope mesh reinforcement on two-storey adobe dwellings, shaking table tests were conducted on unreinforced and half-scale reinforced adobe models, simulating the actions of slight, moderate and strong seismic ground shaking. These models were designed to include the main construction features of typical adobe dwellings in the Peruvian Andes. The results of the experimental tests showed that the rope mesh reinforcement system was able to preserve the structural stability of the tested reduced-scale adobe models under strong motions, thus preventing collapse. It is expected that the proposed reinforced system would also improve the seismic performance of one and two-storey adobe dwellings, reducing in this way their inherent high seismic risk.

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modified from NTE E080 2020)

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modified from Esparza 1986), b plant view

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Acknowledgements

The authors would like to thank SENCICO, a Peruvian government institute devoted to building code development and construction training, for the funding provided to perform the experimental tests. The support of PUCP's Structures Laboratory technical staff is also gratefully acknowledged. Finally, our thanks are due to all the students and colleagues who participated in this research project.

Funding

The experimental tests were partially funded by SENCICO.

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Authors and Affiliations

  1. GERDIS Research Group, Civil Engineering Division, Pontificia Universidad Católica del Perú, Av. Universitaria 1801, Lima, Peru

    Nicola Tarque, Marcial Blondet, Julio Vargas-Neumann & Ramiro Yallico-Luque

Authors
  1. Nicola Tarque
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  2. Marcial Blondet
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  3. Julio Vargas-Neumann
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  4. Ramiro Yallico-Luque
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Correspondence to Nicola Tarque.

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Tarque, N., Blondet, M., Vargas-Neumann, J. et al. Rope mesh as a seismic reinforcement for two-storey adobe buildings. Bull Earthquake Eng 20, 3863–3888 (2022). https://doi.org/10.1007/s10518-022-01346-7

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  • DOI: https://doi.org/10.1007/s10518-022-01346-7

Keywords

  • Adobe masonry
  • Strengthening
  • Shaking table
  • Seismic capacity
  • Experimental dynamic tests
  • Rope mesh reinforcement