Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 44 for “"masonry structures"”.
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Collapse of masonry structures
This dissertation examines the collapse of masonry structures in response to large support displacements and horizontal ground accelerations. There are two main classes of masonry structure: arches that thrust, and supporting elements, such as walls and buttresses, which resist the thrust. This …
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Seismic assessment strategies for masonry structures
Masonry structures are vulnerable to earthquakes, but their seismic assessment remains a challenge. This dissertation develops and improves several strategies to better understand the behavior of masonry structures under seismic loading, and to determine their safety. The primary focus is on …
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The fire resistance of curvilinear masonry structures
L'abstract è presente nell'allegato / the abstract is in the attachment
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Analysis and visualization of equilibrium in masonry structures
… methods to explore the equilibrium of masonry structures. Following a previous approach, we model the stability problem as a quadratic program. When a structure is unstable the quadratic program returns a measure of infeasibility. We extend this model to include tensile structures such …
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Seismic Analysis and Assessment of Historic Unreinforced Masonry Structures
… understanding the behaviour of unreinforced masonry structures (URM) under lateral loads that simulate earthquake effects, as well what aspects of their composition affects their behaviour. Masonry is a composite material containing bricks and mortar. In assessment of existing masonry …
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Damage identification of unreinforced masonry structures based on vibration response
… on the dynamic characterization of unreinforced masonry (URM) buildings and the use of their distinctive modal properties in identifying damage. Numerical and physical models were used to analyse the applicability of system and damage identification techniques to non-slender URM buildings. Modal …
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A Computational Tool for Seismic Collapse Assessment of Masonry Structures
… represent a serious threat to the safety of masonry structures, with failure of these constructions under the influence of seismic action generally occurring via specific, well-documented collapse mechanisms. Analysis and assessment of these collapse mechanisms remains a challenge - while …
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A performance-based approach to retrofitting unreinforced masonry structures for seismic loads
… structural inadequacy of existing unreinforced masonry (URM) buildings to resist possible seismic loading is a serious problem in many parts of the United States, including the Northeast and Midwest. The fact that many of these buildings are deemed historic structures or house critical …
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The application of fiber reinforced plastics to the strengthening of masonry structures
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1992.
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Seismic assessment of unreinforced masonry structures : an investigation of the Longfellow Bridge masonry piers
… in the United States is comprised of numerous structures that are decades old. The Longfellow Bridge is one of the oldest pieces of this infrastructure that is still in use and has become one of the most historic structures of the Boston area. Currently, the steel superstructure of the bridge …
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Formulation and Validation of a Nonlinear Shell Element for the Analysis of Reinforced Concrete and Masonry Structures
… of structural system is fully-grouted reinforced masonry (RM) shear wall structures. The accurate determination of the nonlinear response of reinforced concrete and reinforced masonry (RC/RM) walls subjected to lateral loading is of uttermost importance for ensuring the safety of the built …
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The Pueblitos of Palluche Canyon: An Examination of the Ethnic Affiliation of the Pueblito Inhabitants and Results of Archaeological Survey at LA 9073, LA 10732 and LA 86895, New Mexico
<p>The small, above-ground masonry structures of northwestern New Mexico called "pueblitos" first came to the attention of anthropologists in over a century ago. In 1920, the noted archaeologist A.V. Kidder hypothesized that these masonry structures might have been built by Puebloan refugees …
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Seismic assessment and strengthening of monumental masonry structures, with a particular focus on churches [Valutazione della vulnerabilità sismica e strategie di miglioramento per strutture monumentali in muratura, con particolare attenzione alle chiese]
… alle chiese in muratura non armata (Unreinforced Masonry, URM). Le chiese vengono considerate come strutture storiche particolarmente vulnerabili a causa della loro configurazione complessa e irregolare, delle deboli connessioni tra i macro-elementi e della natura fragile dei materiali. Tali …
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Modelling Masonry as a Continuum: Finite Element Analysis using ABAQUS
The preservation of masonry structures, deeply intertwined with human history and culture, poses significant engineering challenges. Engineers work to ensure the safety and longevity of these structures through meticulous analysis of their structural integrity. However, conventional elastic …
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Collapse analysis of unreinforced masonry domes and curving walls
The safety and assessment of historic masonry structures continues to be a challenge for most analysts, especially for more complex buildings. Historic masonry structures have great cultural and economic value, but engineers have not examined the collapse modes for many masonry elements. This …
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The impact of high frequency/low energy seismic waves on unreinforced masonry
… high to resonate with the natural frequencies of structures. This thesis argues that higher frequency waves travelling through stiff masonry structures can trigger two types of failure mechanisms that have not yet been taken into account. First, the high frequencies can cause small vertical …
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Seismic assessment of unreinforced masonry buildings in Boston's Back Bay neighborhood
… a seismic evaluation of the unreinforced masonry buildings in Boston Massachusetts's historical Back Bay neighborhood. This Boston district, famous for its rows of Victorian brownstone residences is considered to be one of the best preserved examples of 19 'h century urban design. There …
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Structural assessment of the Guastavino Masonry Dome of the Cathedral of Saint John the Divine
Historic masonry structures have survived many centuries so far, yet there is a need to better understand their history and structural safety. This thesis applies structural analysis techniques to assess the Guastavino masonry dome of the Cathedral of Saint John the Divine. This dome is incredibly …
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Empirical analysis of masonry walls : structural design and seismic reinforcement through tilting experiments
Masonry is a fundamental building material that is used for a significant proportion of structures across the world, many of which lie in potentially hazardous environments. While masonry naturally has poor performance under lateral loads which lead to tensile forces, many of these structures lie …
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The Roman Pantheon : scale-model collapse analyses
… Roman Pantheon is among the largest unreinforced masonry dome ever built and is an unparalleled example of the construction capabilities of the ancient Romans. As one of the most well-known buildings in the world, its preservation remains important because of its cultural and societal …
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