Experimental Seismic Response of a Damaged Brick Cave Dwelling Repaired Using a Cement Mortar Coating with Polypropylene Packing Strap Mesh
Publication: Journal of Structural Engineering
Volume 147, Issue 12
Abstract
Millions of people still live in cave dwellings in China and around the world. Due to high risk of earthquakes combined with material deterioration, cave dwellings exhibit poor seismic performance. Accordingly, a low-cost and highly efficient repair technique for damaged brick cave dwellings is needed. This paper presents shake table testing results for seismically damaged 1:4-scale brick cave dwelling models repaired using a cement mortar coating with polypropylene packing strap mesh. The seismic response of the repaired cave dwellings is presented in terms of damping ratio, acceleration, interstory drift, torsion angle, base shear, and hysteretic energy dissipation. Full peeling off between the cave sidewalls and the back wall as well as the plastic hinge at the bottom of the sidewalls led to the failure of the repaired cave dwellings. The damping ratios of the repaired cave dwelling models in the - and -directions were 2.23 and 2.74 times that of the initial values, respectively. The maximum story drift and horizontal torsion angle of the models at peak ground acceleration were 1/29 and 0.0015 rad, respectively. The use of a cement mortar coating with polypropylene (PP) packing strap mesh to repair the brick cave structure resulted in acceptable seismic performance.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work was financially supported by the Natural Science Foundation of China (Grant No. 51808437), Independent Research and Development Project of State Key Laboratory of Green Building in Western China (Grant No. LSZZ202017), Shaanxi S&T Coordinate Innovation Project (Grant No. 2016KTZDSF04-04), and the China Scholarship Council (Grant No. 201908610062).
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Journal of Structural Engineering
Volume 147 • Issue 12 • December 2021
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© 2021 American Society of Civil Engineers.
History
Received: Jan 13, 2021
Accepted: Jul 9, 2021
Published online: Sep 21, 2021
Published in print: Dec 1, 2021
Discussion open until: Feb 21, 2022
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Cited by
- Xiangbi Zhao, Jiashuo Li, Jianyang Xue, Juan Du, Fengliang Zhang, Jia Liu, Xu Lu, Investigation of Earthquake Damage Assessment of Loess Caves of Ancient Buildings Using a Shaking Table, International Journal of Architectural Heritage, 10.1080/15583058.2022.2146550, (1-17), (2022).