Seismic performance improvement of stone masonry buildings in mud mortar

2012 ◽  
pp. 479-484
Author(s):  
R Pun ◽  
B Samali ◽  
H Valipour
Keyword(s):  
Performance Improvement ◽  
Seismic Performance ◽  
Stone Masonry ◽  
Masonry Buildings

Experimental Seismic Performance Evaluation of Unreinforced Brick Masonry Shear Walls

2015 ◽  
Vol 31 (1) ◽  
pp. 215-246 ◽  
Author(s):  
Mohammed Javed ◽  
Guido Magenes ◽  
Bashir Alam ◽  
Akhtar Naeem Khan ◽  
Qaisar Ali ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Primary Source ◽  
Shear Walls ◽  
Brick Masonry ◽  
Stone Masonry ◽  
Masonry Buildings ◽  
Kashmir Earthquake ◽  
Equivalent Viscous Damping ◽  
Seismic Performance Evaluation ◽  
Story Drift

Unreinforced masonry buildings, constructed with stones or bricks, are common in the northern areas of Pakistan. In the October 2005 Kashmir earthquake, the seismic performance of stone masonry buildings was found to be poor, which was the primary source of fatalities. Unreinforced brick masonry (URBM) buildings, however, performed well even in severely jolted areas. The performance of URBM could have been much better if the affected buildings were constructed by using proper guidelines. Taking lessons from the disaster, an experimental investigation, based on typical geometry and precompression levels of the URBM shear walls in the affected region, was conducted to evaluate their seismic performance. Twelve walls were tested in the in-plane direction using quasi-static cyclic loading. First-story drift ratios for various performance levels in URBM buildings are proposed. The influences of relative precompression level and aspect ratio on the damage pattern, ultimate drift ratio, and equivalent viscous damping of the walls are examined.

Seismic Performance of Stone Masonry Buildings Used in the Himalayan Belt

2013 ◽  
Vol 29 (4) ◽  
pp. 1159-1181 ◽  
Author(s):  
Qaisar Ali ◽  
Akhtar Naeem Khan ◽  
Mohammad Ashraf ◽  
Awais Ahmed ◽  
Bashir Alam ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Cost Effective ◽  
Stone Masonry ◽  
Shake Table ◽  
Masonry Buildings ◽  
Masonry Structures ◽  
Limit States ◽  
Shake Table Tests ◽  
Capacity Curves ◽  
Rubble Stone Masonry

Rubble-stone masonry structures are found abundantly in the Asian countries along the Himalayan range. Such structures are usually constructed in dry-stone masonry or are constructed in mud mortar, which makes them susceptible to damage and collapse in earthquakes. In order to study the seismic behavior of these structures, dynamic shake table tests on three reduced-scale rubble-stone masonry models were conducted. The models comprised a representative school building, a residential building, and a model incorporating simple cost-effective features in the form of horizontal and vertical reinforced concrete elements. This paper presents the results of shake table tests carried out on rubble-stone masonry buildings including: damage pattern, capacity curves, damage limit states, and response modification factors of these structures. Test data indicates that seismic performance of rubble-stone masonry structures can be significantly improved by incorporating cost-effective features such as vertical members and relatively thin horizontal bands.

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