scholarly journals Mitigation of Tsunami Debris Impact on Reinforced Concrete Buildings by Fender Structures

Buildings ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 66
Author(s):  
Zin Zin Tun ◽  
Anat Ruangrassamee ◽  
Qudeer Hussain
Keyword(s):  
Nonlinear Static Analysis ◽  
Building Capacity ◽  
Main Building ◽  
Capacity Curves ◽  
Shipping Container ◽  
Cone Type ◽  
Story Drift ◽  
Shipping Containers ◽  
The Impact ◽  
Yield Force

Buildings located in coastal regions are prone to tsunami dangers, which often carry debris in the form of shipping containers and boats. This paper presents an approach for the design of fender structures to minimize debris impacts on buildings. The impact of shipping containers, which are categorized as large debris, is considered in the study. Since the weights of shipping containers are standardized, the impact energy can be related to other debris. For a fender structure, cone-type rubber fenders are used to resist the impact of the shipping container. Various fender reactions are considered as parameters to study the efficiency of the fenders. The displacement-controlled nonlinear static analysis is carried out to determine the building capacity. The energy approach for shipping container impact is used to evaluate the resistance of the building. Capacity curves, energy absorptions, inter-story drift ratios of the buildings with and without a fender structure, and the efficiency of the fender are presented. The buildings with a fender structure can absorb the energy from the impact of a loaded shipping container. Conversely, the building without a fender structure cannot resist the impact of a loaded shipping container. From the obtained results, a recommendation is given for buildings with a fender structure. The hydrodynamic force on the fender structure is transferred to the main building through the fender. Hence, the yield force of the fenders affects the performance of the main building that must be considered in the design.

scholarly journals A comparative study on a complex URM building: part II—issues on modelling and seismic analysis through continuum and discrete-macroelement models

2021 ◽  
Author(s):  
G. Castellazzi ◽  
B. Pantò ◽  
G. Occhipinti ◽  
D. A. Talledo ◽  
L. Berto ◽  
...  
Keyword(s):  
Seismic Analysis ◽  
Dynamic Properties ◽  
Limit State ◽  
Central Italy ◽  
Nonlinear Static Analysis ◽  
Structural Safety ◽  
Masonry Building ◽  
Maximum Acceleration ◽  
Capacity Curves ◽  
Comparison Of The Results

AbstractThe paper presents the comparison of the results obtained on a masonry building by nonlinear static analysis using different software operating in the field of continuum and discrete-macroelement modeling. The structure is inspired by an actual building, the "P. Capuzi" school in Visso (Macerata, Italy), seriously damaged following the seismic events that affected Central Italy from August 2016 to January 2017. The activity described is part of a wider research program carried out by various units involved in the ReLUIS 2017/2108—Masonry Structures project and having as its object the analysis of benchmark structures for the evaluation of the reliability of software packages. The comparison of analysis was carried out in relation to: global parameters (concerning the dynamic properties, capacity curves and, equivalent bilinear curves), synthetic parameters of structural safety (such as, for example, the maximum acceleration compatible with the life safety limit state) and the response in terms of simulated damage. The results allow for some insights on the use of continuum and discrete-macroelement modeling, with respect to the dispersion of the results and on the potential repercussions in the professional field. This response was also analyzed considering different approaches for the application of loads.

Numerical Performance of Thermodynamic Behavior of Shipping-Container Architecture

Proceedings ◽  
2019 ◽  
Vol 44 (1) ◽  
pp. 9
Author(s):  
Ivan Felis Enguix ◽  
Jorge Otero Vega ◽  
Sina Ellesser
Keyword(s):  
Numerical Simulations ◽  
Thermal Inertia ◽  
Thermodynamic Behavior ◽  
Shipping Container ◽  
Design Resources ◽  
Shipping Containers ◽  
Numerical Performance ◽  
Different Climates

The reuse of shipping containers in architecture has grown in global popularity. However, few studies focus on understanding its thermodynamic behavior. The present study addresses, through numerical simulations, the transitory behavior of a typical house built with containers under different climates, both cold and warm. We examined container with different build construction and observed their effect, from completely naked to those that are coated with materials of different insulation and thermal inertia. Additionally, orientation and other design resources, such as height with respect to the ground, shadow elements, and the position of the windows, were considered. With all these multiparametric studies, quantitative conclusions were obtained that can be considered in design.

INELASTIC DYNAMIC ANALYSIS OF AN RC BUILDING IMPACTED BY A TSUNAMI WATER-BORNE SHIPPING CONTAINER

2012 ◽  
Vol 06 (01) ◽  
pp. 1250001 ◽  
Author(s):  
M. A. K. M. MADURAPPERUMA ◽  
ANIL C. WIJEYEWICKREMA
Keyword(s):  
Impact Analysis ◽  
Failure Modes ◽  
Indian Ocean Tsunami ◽  
Shipping Container ◽  
Axial Forces ◽  
Rc Building ◽  
Time Histories ◽  
Force Time ◽  
The Impact ◽  
Water Borne

In the aftermath of the Indian Ocean tsunami of December 26, 2004, buildings without in-fill walls in the first story, which allow the unimpeded flow of tsunami waves, have been constructed in the regions of low seismic risk. However, columns in such buildings could be susceptible to impact of tsunami water-borne massive objects. In the present study, the impact of a tsunami water-borne shipping container on a reinforced concrete (RC) building is considered. The impact force-time histories are obtained from a high-fidelity finite element analysis, for a range of container velocities. These force-time histories are used in the impact analysis of the RC building and potential failure modes of the impacted column, changes in column axial forces, and floor displacements are studied. For the range of container velocities considered, it is found that although the axial load carrying capacity of the impacted column has significantly decreased, the building remains stable due to redistribution of internal forces to adjacent members.

scholarly journals Impact of Lightning Impulse on Electric Field Stress of Spacer in Single Phase Gas Insulated Busduct

2019 ◽  
Vol 8 (2S3) ◽  
pp. 837-842
Keyword(s):  
Electric Field ◽  
Power Systems ◽  
Triple Point ◽  
High Reliability ◽  
Moderate Pressure ◽  
Field Stress ◽  
Cone Type ◽  
Lightning Impulse ◽  
Reliable Power Supply ◽  
The Impact

During the last two decades, for reliable power supply, GIS have found a broad range of application in power systems because of their high reliability, easy maintenance, small space requirement, etc. Gas insulated sub-stations employs a superior dielectric gas, SF6 at moderate pressure for phase to phase and phase to ground insulation. Several troubles and system outages in GIS have been reported world-wide due to insulation failures which resulted in the intensification of electric field along the spacer surface and especially at the triple point electrode – spacer – gas. Hence, it was required to reduce the rate of insulation failure. In this work, Conventional cone type spacer geometry is taken for which field study has been done. Electric field stresses developed by the cone type spacer on the surface of the spacer and also at the triple junction is determined. It is found that the electric field stress at the surface of the spacer is maintained uniform, the electric field stress at the critical junctions formed by the conductor, solid insulator and SF6 gas is not maintained at minimum value. Metal inserts are considered as a means to reduce the stress at the triple point junction. The impact of Lightning Impulse on the Electric Field Stress along the spacer is carried and the reduction of stress is mitigated with the insertion of Metal Inserts.

scholarly journals Building Capacity: HEED Slills Audit and Recommendations

2021 ◽  
Author(s):  
Alison Halford
Keyword(s):  
Professional Development ◽  
Capacity Building ◽  
Knowledge Production ◽  
Best Practice ◽  
Research Team ◽  
Skills Development ◽  
Building Capacity ◽  
Energy Projects ◽  
Team Project ◽  
The Impact

This report aims to explore how HEED approached and delivered capacity building for the research team, project partners and the communities the team worked within Rwanda and Nepal. This report's purpose is threefold: first, to be evidential on how HEED planned, delivered and captured impact around capacity building so similar projects can develop best practice when skills development is a key deliverable. Second, to encourage other energy projects to document the impact produced by researchers and practitioners' involvement while working with communities. Therefore, to recognise the tacit and dynamic aspects of knowledge production, not only the more explicit aspects. Third, suggest recommendations to support a skills-led approach to capacity building that provides personal and professional development opportunities to deepen knowledge production and impact.

scholarly journals Design and Analysis of a Lightweight Composite Shipping Container Made of Carbon Fiber Laminates

Logistics ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 18 ◽  
Author(s):  
Turkay Yildiz
Keyword(s):  
Carbon Fiber ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Energy Demand ◽  
Structural Integrity ◽  
Gas Emissions ◽  
Fuel Savings ◽  
Shipping Container ◽  
Shipping Containers ◽  
And Function

The literature indicates that a 20% reduction in the weight of empty 40-foot shipping containers would result in $28 billion of fuel savings, along with a 3.6 exajoule reduction in the energy demand over containers’ 15-year lifetime. Decreasing the energy demand and thereby greenhouse gas emissions by utilizing lightweight shipping containers has been an unexplored strategy. In this regard, this study investigates the possibility of further reducing the weight of an empty container without compromising the structural integrity, strength, and function of a traditional steel container. This research finds that up to an 80% reduction in weight is possible by producing shipping containers with composite materials. This research presents the new design of a 40-foot container made of carbon fiber laminates. The tare weight of a traditional 40-foot shipping container is around 3750 kg. On the contrary, in this research, the weight of a composite design of the same container is calculated to be around 822 kg. Additional tests with various loads, such as lifting the container and stacking loads onto the composite container, are performed to explore the strength and buckling issues of the design presented in this study. The analyses reveal that the composite shipping container is a highly promising candidate for reducing greenhouse gas emissions, providing fuel savings and thus reducing the operational costs of transportation.

A comparative study on a complex URM building. Part II: issues on modelling and seismic analysis through continuum and discrete-macroelement models

2021 ◽  
Author(s):  
Giovanni Castellazzi ◽  
Bartolomeo Pantò ◽  
Giuseppe Occhipinti ◽  
Diego Alejandro Talledo ◽  
Luisa Berto ◽  
...  
Keyword(s):  
Seismic Analysis ◽  
Dynamic Properties ◽  
Limit State ◽  
Central Italy ◽  
Nonlinear Static Analysis ◽  
Structural Safety ◽  
Masonry Building ◽  
Maximum Acceleration ◽  
Capacity Curves ◽  
Comparison Of The Results

Abstract The paper presents the comparison of the results obtained on a masonry building by nonlinear static analysis using different software operating in the field of continuum and discrete-macroelement modeling. The structure is inspired by an actual building, the "P. Capuzi" school in Visso (Macerata, Italy), seriously damaged following the seismic events that affected Central Italy from August 2016 to January 2017. The activity described is part of a wider research program carried out by various units involved in the ReLUIS 2017/2108 - Masonry Structures project and having as its object the analysis of benchmark structures for the evaluation of the reliability of software packages. The comparison of analysis was carried out in relation to: global parameters (concerning the dynamic properties, capacity curves and equivalent bilinear curves), synthetic parameters of structural safety (such as, for example, the maximum acceleration compatible with the life safety limit state) and the response in terms of simulated damage. The results allow for some insights on the use of continuum and discrete-macroelement modeling, with respect to the dispersion of the results and on the potential repercussions in the professional field. This response was also analyzed considering different approaches for the application of loads. URM building.

Seismic Performance of Masonry Infilled RC Structures via N2 Pushover Assessment Procedures: Outcomes under Different Modeling Hypotheses of a Case Study

2016 ◽  
Vol 847 ◽  
pp. 339-346
Author(s):  
Liborio Cavaleri ◽  
Fabio di Trapani ◽  
Maurizio Papia
Keyword(s):  
Seismic Performance ◽  
Performance Levels ◽  
Rc Structures ◽  
Capacity Curves ◽  
Equivalent Strut ◽  
N2 Method ◽  
Shear Demand ◽  
Assessment Procedures ◽  
The Impact

The assessment of the capacity of RC masonry infilled RC structures constitutes nowadays a still debated issue. Pushover based procedures for the evaluation of seismic performance, such as N2 method, are largely used in practice and in force in several technical codes. The latter has proved to be reliable for a large number of structural typologies, however in the case of infilled frames, the choices made on the modelling strategy may radically modify the outcomes observable from the capacity curves and the consequent performance levels achievable. In the paper, the extent of different modelling choices on the results of the application of N2 procedure is investigated by the deep analysis of a case study of a scholastic facility in Italy. Three modelling hypotheses are considered: neglecting of infills; equivalent strut macromodeling and equivalent strut macromodeling with prediction of additional shear demand arising because of the interaction with the infills. The impact of each on the capacity curves and then on the reliability of the overall N2 procedure is discussed pointing out the major criticalities.

Stairs Effect on Steel Frame Structure under Seismic Loading

2014 ◽  
Vol 1065-1069 ◽  
pp. 1245-1248
Author(s):  
Zhuo Jun Zeng ◽  
Jun Ping Wang ◽  
Yan Xiang Li
Keyword(s):  
Seismic Loading ◽  
Structure Design ◽  
Steel Frame ◽  
Frame Structure ◽  
Vibration Period ◽  
Finite Element Software ◽  
Story Drift ◽  
Article Analysis ◽  
Steel Frame Structure ◽  
The Impact

This article analysis stairs effect on steel frame structure under seismic loading by using the finite element software MIDAS Gen. Detailed analyzing impact of stairs on the self-vibration period, period ratio, the story drift and other design indexes in designing of the impact under seismic loading. Analysis shows that stairs have great effects on the design index of steel frame structure. Therefore the stair effect must be considered in analysis of structure design and modeling.

scholarly journals Building capacity for dissemination and implementation to maximize research impact in a CTSA: The University of Wisconsin story

2020 ◽  
Vol 4 (3) ◽  
pp. 209-215 ◽  
Author(s):  
Andrew Quanbeck ◽  
Jane Mahoney ◽  
Kim Kies ◽  
Kate Judge ◽  
Maureen Smith
Keyword(s):  
Community Engagement ◽  
Translational Research ◽  
Stakeholder Engagement ◽  
Research Impact ◽  
Relationship Building ◽  
Dissemination And Implementation ◽  
Building Capacity ◽  
University Of Wisconsin ◽  
The University ◽  
The Impact

AbstractWe report results of an 8-year process of stakeholder engagement aimed at building capacity in Dissemination and Implementation (D&I) research at the University of Wisconsin as part of the National Institutes of Health’s Clinical and Translational Science Award (CTSA). Starting in 2008, annual individual interviews were held with leaders of the Wisconsin CTSA’s community engagement core for strategic planning purposes. Interviews were followed by annual planning meetings that employed a facilitated group decision-making process aimed at identifying and prioritizing gaps in the translational research spectrum. In 2011, the stakeholder engagement process identified D&I as a primary gap limiting overall impact of the institution’s research across the translational spectrum. Since that time, our CTSA has created an array of D&I resources falling into four broad categories: (1) relationship building with D&I partners, (2) D&I skill building, (3) translational research resources, and (4) resources to support D&I activities. Our systematic process of stakeholder engagement has increased the impact of research by providing D&I resources to meet investigator and community needs. CTSAs could engage with leaders of their community engagement cores, which are common to all CTSAs, to adapt or adopt these resources to build D&I capacity.

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