Dynamic Shake-Table Tests on Two Full-Scale, Unreinforced Masonry Buildings Subjected to Induced Seismicity

2017 ◽  
pp. 376-387
Author(s):  
Gabriele Guerrini ◽  
Francesco Graziotti ◽  
Andrea Penna ◽  
Guido Magenes
Keyword(s):  
Induced Seismicity ◽  
Unreinforced Masonry ◽  
Full Scale ◽  
Shake Table ◽  
Masonry Buildings ◽  
Shake Table Tests

Full‐scale shake‐table tests on two unreinforced masonry cavity‐wall buildings: effect of an innovative timber retrofit

2021 ◽  
Author(s):  
Marco Miglietta ◽  
Nicolò Damiani ◽  
Gabriele Guerrini ◽  
Francesco Graziotti
Keyword(s):  
Seismic Vulnerability ◽  
Concrete Slab ◽  
Cost Effective ◽  
Unreinforced Masonry ◽  
Full Scale ◽  
Cavity Wall ◽  
Masonry Walls ◽  
Shake Table ◽  
Earthquake Excitation ◽  
Reinforced Concrete Slab

AbstractTwo full-scale building specimens were tested on the shake-table at the EUCENTRE Foundation laboratories in Pavia (Italy), to assess the effectiveness of an innovative timber retrofit solution, within a comprehensive research campaign on the seismic vulnerability of existing Dutch unreinforced masonry structures. The buildings represented the end-unit of a two-storey terraced house typical of the North-Eastern Netherlands, a region affected by induced seismicity over the last few decades. This building typology is particularly vulnerable to earthquake excitation due to lack of seismic details and irregular distribution of large openings in masonry walls. Both specimens were built with the same geometry. Their structural system consisted of cavity walls, with interior load-bearing calcium-silicate leaf and exterior clay veneer, and included a first-floor reinforced concrete slab, a second-floor timber framing, and a roof timber structure supported by masonry gables. A timber retrofit was designed and installed inside the second specimen, providing an innovative sustainable, light-weight, reversible, and cost-effective technique, which could be extensively applied to actual buildings. Timber frames were connected to the interior surface of the masonry walls and completed by oriented strands boards nailed to them. The second-floor timber diaphragm was stiffened and strengthened by a layer of oriented-strand boards, nailed to the existing joists and to additional blocking elements through the existing planks. These interventions resulted also in improved wall-to-diaphragm connections with the inner leaf at both floors, while steel ties were added between the cavity-wall leaves. The application of the retrofit system favored a global response of the building with increased lateral capacities of the masonry walls. This paper describes in detail the bare and retrofitted specimens, compares the experimental results obtained through similar incremental dynamic shake-table test protocols up to near-collapse conditions, and identifies damage states and damage limits associated with displacements and deformations.

Shake-Table Tests of a Full-Scale Three-Story Reinforced Masonry Shear Wall Structure

2016 ◽  
Vol 142 (10) ◽  
pp. 04016074 ◽  
Author(s):  
A. Stavridis ◽  
F. Ahmadi ◽  
M. Mavros ◽  
P. B. Shing ◽  
R. E. Klingner ◽  
...  
Keyword(s):  
Shear Wall ◽  
Full Scale ◽  
Wall Structure ◽  
Shake Table ◽  
Shake Table Tests ◽  
Reinforced Masonry ◽  
Masonry Shear Wall

Shake table tests on the out-of-plane response of unreinforced masonry wallsThis article is one of a selection of papers published in this Special Issue on Masonry.

2007 ◽  
Vol 34 (11) ◽  
pp. 1381-1392 ◽  
Author(s):  
C. S. Meisl ◽  
K. J. Elwood ◽  
C. E. Ventura
Keyword(s):  
Ground Motion ◽  
Ground Motions ◽  
Unreinforced Masonry ◽  
Rigid Bodies ◽  
Shake Table ◽  
Shake Table Tests ◽  
Out Of Plane ◽  
Wall Construction ◽  
Selection Of

Given sufficient anchorage to the diaphragms, out-of-plane walls in unreinforced masonry (URM) buildings have been shown to crack above midheight and then rock as two rigid bodies. This study investigates the sensitivity of the rocking response to the type of ground motion and the quality of the wall construction. Shake table tests were conducted on four full-scale multi-wythe walls, all with a height to thickness (h/t) ratio of 12 but of varying construction quality and subjected to three different ground motions. All walls experienced cracking at less than one half of the 2005 National Building Code of Canada (NBCC) level for Vancouver, but exhibited a stable rocking behaviour without collapse beyond a ground motion 1.5 times the 2005 NBCC level.

DDBD assessment of steel CBFs using full scale shake table tests with realistic connections

2019 ◽  
Vol 154 ◽  
pp. 14-26 ◽  
Author(s):  
S. Salawdeh ◽  
T. Ryan ◽  
B.M. Broderick ◽  
J. Goggins
Keyword(s):  
Full Scale ◽  
Shake Table ◽  
Shake Table Tests

Shake-Table Tests of a Full-Scale Two-Story Shear-Dominated Reinforced Masonry Wall Structure

2016 ◽  
Vol 142 (10) ◽  
pp. 04016078 ◽  
Author(s):  
M. Mavros ◽  
F. Ahmadi ◽  
P. B. Shing ◽  
R. E. Klingner ◽  
D. McLean ◽  
...  
Keyword(s):  
Masonry Wall ◽  
Full Scale ◽  
Wall Structure ◽  
Shake Table ◽  
Shake Table Tests ◽  
Reinforced Masonry

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.

Shake table tests of a full-scale two-story sheathing-braced cold-formed steel building

2017 ◽  
Vol 151 ◽  
pp. 633-647 ◽  
Author(s):  
Luigi Fiorino ◽  
Vincenzo Macillo ◽  
Raffaele Landolfo
Keyword(s):  
Full Scale ◽  
Shake Table ◽  
Shake Table Tests ◽  
Steel Building ◽  
Cold Formed Steel
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