Investigating the effect of toothed edges and large openings on the seismic behavior of confined masonry walls
Confined masonry structures are commonly seen in seismically active regions in developing countries, due to their satisfactory performances in past earthquakes, cost effectiveness and ease of construction. However, confined masonry construction is a less researched field compared to other techniques...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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2017
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| Online Access: | http://hdl.handle.net/10356/71848 |
| _version_ | 1826114040915558400 |
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| author | Tan, Amber Chun En |
| author2 | Tan Kang Hai |
| author_facet | Tan Kang Hai Tan, Amber Chun En |
| author_sort | Tan, Amber Chun En |
| collection | NTU |
| description | Confined masonry structures are commonly seen in seismically active regions in developing countries, due to their satisfactory performances in past earthquakes, cost effectiveness and ease of construction. However, confined masonry construction is a less researched field compared to other techniques which are more commonly used in urban areas, such as reinforced concrete construction. As a result, relevant codes are less extensive, and best-practices that builders rely on can be ambiguous or contradictory.
This experimental study is conducted in response to a research request from Smart Shelter Foundation (SSF), an NGO building earthquake-proof structures in Nepal, to find out more about the effectiveness of the methods they have adopted.
In this experiment, 3 confined masonry specimens were constructed based on SSF’s designs, to investigate the effectiveness of toothed wall-to-column connections, as well as the effects of a large opening in the masonry panel. Each specimen was subjected to displacement controlled in-plane cyclic loading for 2 cycles per drift at 1.0% increments, until a 20% drop in maximum strength was attained.
Experimental work showed that toothed wall-to-column connections did not provide significant improvement to the in-plane seismic response of the wall panel, and provision of a lintel band above an opening in the upper-middle section of the panel may alleviate the detrimental effect of the opening on wall response. Specimens first showed signs of flexural cracks on the reinforced concrete frame, followed by development of multiple diagonal cracks on the wall panel, which contributed greatly to energy dissipation. For all specimens, cracks were well-distributed over the masonry panels. |
| first_indexed | 2024-10-01T03:33:00Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/71848 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:33:00Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/718482023-03-03T17:00:32Z Investigating the effect of toothed edges and large openings on the seismic behavior of confined masonry walls Tan, Amber Chun En Tan Kang Hai School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Structures and design Confined masonry structures are commonly seen in seismically active regions in developing countries, due to their satisfactory performances in past earthquakes, cost effectiveness and ease of construction. However, confined masonry construction is a less researched field compared to other techniques which are more commonly used in urban areas, such as reinforced concrete construction. As a result, relevant codes are less extensive, and best-practices that builders rely on can be ambiguous or contradictory. This experimental study is conducted in response to a research request from Smart Shelter Foundation (SSF), an NGO building earthquake-proof structures in Nepal, to find out more about the effectiveness of the methods they have adopted. In this experiment, 3 confined masonry specimens were constructed based on SSF’s designs, to investigate the effectiveness of toothed wall-to-column connections, as well as the effects of a large opening in the masonry panel. Each specimen was subjected to displacement controlled in-plane cyclic loading for 2 cycles per drift at 1.0% increments, until a 20% drop in maximum strength was attained. Experimental work showed that toothed wall-to-column connections did not provide significant improvement to the in-plane seismic response of the wall panel, and provision of a lintel band above an opening in the upper-middle section of the panel may alleviate the detrimental effect of the opening on wall response. Specimens first showed signs of flexural cracks on the reinforced concrete frame, followed by development of multiple diagonal cracks on the wall panel, which contributed greatly to energy dissipation. For all specimens, cracks were well-distributed over the masonry panels. Bachelor of Engineering (Civil) 2017-05-19T06:15:17Z 2017-05-19T06:15:17Z 2017 Final Year Project (FYP) http://hdl.handle.net/10356/71848 en Nanyang Technological University 63 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Civil engineering::Structures and design Tan, Amber Chun En Investigating the effect of toothed edges and large openings on the seismic behavior of confined masonry walls |
| title | Investigating the effect of toothed edges and large openings on the seismic behavior of confined masonry walls |
| title_full | Investigating the effect of toothed edges and large openings on the seismic behavior of confined masonry walls |
| title_fullStr | Investigating the effect of toothed edges and large openings on the seismic behavior of confined masonry walls |
| title_full_unstemmed | Investigating the effect of toothed edges and large openings on the seismic behavior of confined masonry walls |
| title_short | Investigating the effect of toothed edges and large openings on the seismic behavior of confined masonry walls |
| title_sort | investigating the effect of toothed edges and large openings on the seismic behavior of confined masonry walls |
| topic | DRNTU::Engineering::Civil engineering::Structures and design |
| url | http://hdl.handle.net/10356/71848 |
| work_keys_str_mv | AT tanamberchunen investigatingtheeffectoftoothededgesandlargeopeningsontheseismicbehaviorofconfinedmasonrywalls |