Low cost frictional seismic base-isolation of residential new masonry buildings in developing countries: A small masonry house case study

Ahmad Basshofi Habieb*, Gabriele Milani, Tavio Tavio, Federico Milani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Introduction: An advanced Finite Element model is presented to examine the performance of a low-cost friction based-isolation system in reducing the seismic vulnerability of low-class rural housings. This study, which is mainly numerical, adopts as benchmark an experimental investigation on a single story masonry system eventually isolated at the base and tested on a shaking table in India. Methods: Four friction isolation interfaces, namely, marble-marble, marble-high-density polyethylene, marble-rubber sheet, and marblegeosynthetic were involved. Those interfaces differ for the friction coefficient, which was experimentally obtained through the aforementioned research. The FE model adopted here is based on a macroscopic approach for masonry, which is assumed as an isotropic material exhibiting damage and softening. The Concrete damage plasticity (CDP) model, that is available in standard package of ABAQUS finite element software, is used to determine the non-linear behavior of the house under non-linear dynamic excitation. Results and Conclusion: The results of FE analyses show that the utilization of friction isolation systems could much decrease the acceleration response at roof level, with a very good agreement with the experimental data. It is also found that systems with marble-marble and marblegeosynthetic interfaces reduce the roof acceleration up to 50% comparing to the system without isolation. Another interesting result is that there was little damage appearing in systems with frictional isolation during numerical simulations. Meanwhile, a severe state of damage was clearly visible for the system without isolation.

Original languageEnglish
Pages (from-to)1026-1035
Number of pages10
JournalOpen Civil Engineering Journal
Volume11
Issue numberM2
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • Concrete damage plasticity
  • Friction base-isolation
  • Low cost
  • Masonry
  • Peak ground acceleration
  • Rural housing

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