Analytical investigation of seismic performance of masonry walls strengthened with strain hardening fiber reinforced geopolymer matrix

Elnara Satekenova, Dichuan Zhang, Jong Kim, Kai Tai Wan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Strain hardening fiber reinforced geopolymer matrix, termed here as strain hardening material, is being proposed as a new seismic retrofitting material. Seismic behavior of the masonry walls with and without the strain hardening material was evaluated through finite element simulations in this paper. The finite element simulation was conducted on a masonry wall model with smeared crack material properties. The effectiveness of the strain hardening material for enhancing the seismic capacity of the masonry wall was evaluated through pushover analyses. Several parameters are considered in the pushover analysis including thickness and mechanical properties of the strain hardening material, wall geometries and loading directions. The force-displacement response obtained from the pushover analysis was used to develop a simplified multi-degree spring model. Nonlinear dynamic time history analyses were conducted using the spring model to evaluate the seismic demand of masonry structures strengthened with the strain hardening material. From the simulation results, it has been found that the strain hardening material can significantly improve the strength and ductility of the masonry wall under earthquakes. Design recommendations are made for retrofitting masonry structures using the proposed strain hardening material.

Original languageEnglish
Title of host publicationStructures Under Shock and Impact XV
EditorsG. Schleyer, S. Syngellakis
PublisherWITPress
Pages239-250
Number of pages12
ISBN (Print)9781784662653
DOIs
Publication statusPublished - 2018
Event15th International Conference on Structures under Shock and Impact, SUSI 2018 - Seville, Spain
Duration: Jun 4 2018Jun 6 2018

Publication series

NameWIT Transactions on the Built Environment
Volume180
ISSN (Print)1743-3509
ISSN (Electronic)1746-4498

Other

Other15th International Conference on Structures under Shock and Impact, SUSI 2018
CountrySpain
CitySeville
Period6/4/186/6/18

Keywords

  • Masonry wall
  • Seismic analysis
  • Seismic retrofitting
  • Strain hardening geopolymer matrix

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Arts and Humanities (miscellaneous)
  • Transportation
  • Safety Research
  • Computer Science Applications

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