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Showing 1 to 20 of 26 for “"Seismic Assessment"”.
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Seismic assessment strategies for 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 historic arched …
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Seismic Assessment of RC Structures Considering Vertical Ground Motion
In the experimental investigation, two SPSD tests were conducted in order to experimentally investigate the effect of vertical ground motion. FHWA Bridge systems selected from the previously completed analysis was used during full hybrid simulations designed to realistically represent the loading …
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Integrated seismic assessment and design of plan-irregular structures
… of plan-irregular structures requires advanced seismic assessment and design guidelines which address torsional effects. This study aims to provide advanced and improved seismic assessment and design guidelines for plan-irregular structures. Furthermore, this study aims to develop an integrated …
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Probabilistic Seismic Assessment of Structure, Foundation, and Soil Interacting Systems
Seismic vulnerability curves of a highway overcrossing bridge in the Central and Eastern United States (CEUS) are derived employing the aforementioned methods with and without soil-structure interaction. Four different approaches of Soil-Structure Interaction (SSI) are tried: (a) Abutments and …
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Strategies for Seismic Assessment of Common Existing Reinforced Concrete Bridges Typologies
… inspections on the structure. In particular, the assessment is performed on existing reinforced concrete (RC) bridges with a common structural scheme in Italy (multi-span simply supported girder bridges). The framework is set up of 6 steps and each step is investigated. Steps 1 and 2 are a sort of …
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Impact of complex system behavior on seismic assessment of RC bridges
… were made in capturing the true inelastic seismic response of RC bridge piers, and improvements were made to seismic design methods. However, several characteristics of complex RC bridge response are not yet fully understood. The challenge of assessing risk posed to bridges with irregular …
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Seismic assessment of unreinforced masonry buildings in Boston's Back Bay neighborhood
This thesis presents 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 …
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Seismic Assessment of Singly Reinforced Concrete Walls in Pre-1970s Multi-Storey Buildings
… considered in guidelines on evaluating seismic behaviour) of reinforced concrete walls representative of typical older construction practice in New Zealand. The testing results highlighted the limited ductility of older reinforced concrete walls without ductile detailing and identified …
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An overdamped multimodal adaptive nonlinear static procedure for seismic assessment of rc infilled frames
The seismic assessment of existing structures is considered the fundamental step to (i) estimate the seismic capacity of the initial structure (ii) predict the collapse mechanism and the structural weakness, (iii) select the most appropriate seismic retrofitting technique and determine the improved …
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Seismic assessment of unreinforced masonry structures : an investigation of the Longfellow Bridge masonry piers
… must be assessed for their ability to withstand seismic loads. This assessment presents an investigation of original construction documents and identifies critical components of the bridge that require more in depth analysis. It also shows a qualitative review of expected seismic activity for the …
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Analysis of Code Procedures for Seismic Assessment of Existing Buildings: Italian Seismic Code, EC8, ATC-40, FEMA356, FEMA440
… of damage in existing buildings located in seismic regions. This vulnerability has been attributed to several reasons, such as insufficient strength and stiffness, poor detailing, irregularities in plan and elevation, domination of brittle failure modes over ductile ones, etc. On account of …
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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]
La presente tesi affronta il tema della valutazione sismica e degli interventi di miglioramento di strutture monumentali in muratura, con particolare riferimento alle chiese in muratura non armata (Unreinforced Masonry, URM). Le chiese vengono considerate come strutture storiche particolarmente …
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Optimizing resilience : performance based assessment of retrofits for wood-frame housing in San Francisco
Prevalent seismic hazards in the San Francisco Bay Area region require the building stock to be able to withstand frequent ground accelerations while maintaining life-safety standards. Most housing in the City of San Francisco is more than a century old and unable to comply with the increasingly …
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A Computational Tool for Seismic Collapse Assessment of Masonry Structures
… 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 most analysis tools are time-consuming and computationally expensive, typical …
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Semplified seismic Vulnerability Assessment of Masonry Arch Bridges
This study concerns seismic vulnerability assessment of masonry arch bridges with common typologies in Europe. Bridges are, in most cases, the most vulnerable elements in the transportation network during an earthquake; therefore, their seismic vulnerability assessment is necessary for a proper …
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Assessment of Perforated Unreinforced Masonry Walls Responding In-Plane
… research presented in this thesis describes the seismic assessment of perforated unreinforced masonry (URM) walls subjected to in-plane loading through accurate analysis of the wall lateral capacity and seismic demand. Current assessment methods for determining the capacity of perforated URM …
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Damage identification of unreinforced masonry structures based on vibration response
… damage distribution in the specimens. Finally, a seismic assessment was conducted on a typical New Zealand URM building by applying time-history analysis on finite element models. An original seismic hazard zonation and methodology for selecting appropriate ground-motion records in the North …
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