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 language | English |
|---|---|
| Title of host publication | Structures Under Shock and Impact XV |
| Editors | G. Schleyer, S. Syngellakis |
| Publisher | WITPress |
| Pages | 239-250 |
| Number of pages | 12 |
| Volume | 180 |
| ISBN (Print) | 9781784662653 |
| DOIs | |
| Publication status | Published - Jan 1 2018 |
| Event | 15th International Conference on Structures under Shock and Impact, SUSI 2018 - Seville, Spain Duration: Jun 4 2018 → Jun 6 2018 |
Other
| Other | 15th International Conference on Structures under Shock and Impact, SUSI 2018 |
|---|---|
| Country | Spain |
| City | Seville |
| Period | 6/4/18 → 6/6/18 |
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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
Cite this
Analytical investigation of seismic performance of masonry walls strengthened with strain hardening fiber reinforced geopolymer matrix. / Satekenova, Elnara; Zhang, Dichuan; Kim, Jong; Wan, Kai Tai.
Structures Under Shock and Impact XV. ed. / G. Schleyer; S. Syngellakis. Vol. 180 WITPress, 2018. p. 239-250.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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TY - GEN
T1 - Analytical investigation of seismic performance of masonry walls strengthened with strain hardening fiber reinforced geopolymer matrix
AU - Satekenova, Elnara
AU - Zhang, Dichuan
AU - Kim, Jong
AU - Wan, Kai Tai
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
KW - Masonry wall
KW - Seismic analysis
KW - Seismic retrofitting
KW - Strain hardening geopolymer matrix
UR - http://www.scopus.com/inward/record.url?scp=85055976793&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055976793&partnerID=8YFLogxK
U2 - 10.2495/SUSI180211
DO - 10.2495/SUSI180211
M3 - Conference contribution
SN - 9781784662653
VL - 180
SP - 239
EP - 250
BT - Structures Under Shock and Impact XV
A2 - Schleyer, G.
A2 - Syngellakis, S.
PB - WITPress
ER -