Design and Verification of Elevated Slabs Made with Hybrid Reinforced Concrete: Case Studies

2021 ◽  
pp. 796-808
Author(s):  
Luca Facconi ◽  
Fausto Minelli ◽  
Giovanni Plizzari
Keyword(s):  
Reinforced Concrete ◽  
Case Studies ◽  
Concrete Case

scholarly journals Lumped damage mechanics as a diagnosis tool of reinforced concrete structures in service: case studies of a former bridge arch and a balcony slab

2021 ◽  
Vol 15 (58) ◽  
pp. 21-32
Author(s):  
Rafael Cunha ◽  
Camila Vieira ◽  
David Amorim
Keyword(s):  
Reinforced Concrete ◽  
Case Studies ◽  
Damage Mechanics ◽  
Low Cost ◽  
Concrete Structures ◽  
Structural Condition ◽  
Numerical Analyses ◽  
Engineering Practice ◽  
Reinforced Concrete Structures ◽  
Diagnosis Tool

Reinforced concrete structures may need repair in order to ensure the designed durability. Such necessity vary in cause and effect, but the structural diagnosis serves as the basis for adopting intervention measures. The assessment of the structural condition usually is made in loco, but sometimes numerical analyses are required as a low cost and effective preliminary diagnosis. In general, numerical analyses use hundreds or thousands of finite elements and nonlinear theories that are not often used in engineering practice. As an alternative, lumped damage mechanics (LDM) uses key concepts of classic fracture and damage mechanics in plastic hinges throughout well-known quantities such as ultimate moment and cracking moment. Such theory describes the concrete cracking by a damage variable, which can be used as a diagnosis criterion. Therefore, this paper presents LDM as a diagnosis tool to analyse actual structures. The case studies presented in this paper are a former bridge arch tested in China and a balcony that collapsed in Brazil. The results show that LDM numerical response of those structures are quite close to laboratory observations (former bridge arch) and in loco measurements (balcony).

Theoria Cum Praxi – Modeling Specialised Communication

Glottotheory ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 147-172
Author(s):  
Kristina Pelikan ◽  
Thorsten Roelcke
Keyword(s):  
Case Studies ◽  
Applied Linguistics ◽  
Daily Basis ◽  
System Thinking ◽  
Research Projects ◽  
Concrete Case ◽  
Alternative Approach ◽  
English As Lingua Franca ◽  
Further Development

Abstract As researchers from different nationalities and disciplines collaborate in research projects with joint grants, science becomes more and more global. For conducting the research, project members from several different professional and national backgrounds work together on a daily basis using English as lingua franca (ELF). This results in a very heterogenic linguistic setting, influenced by several mother tongues and languages for specific purposes (LSPs). Systematic approaches have been neglected during the last years while LSP research moved more and more towards applied approaches working on concrete case studies. The present study follows an alternative approach. Applied linguistics and further development of systematic approaches shall here be seen as a circular flow. For instance, communication optimisation during a case study benefits from system-thinking and vice versa. How could the project language of a case study be structured and which long established classifications need to be revised based on these data? Is there a need for a new understanding of applied LSP research?

Case Studies of Seismic Vibration Control of Civil Structures Using Shape Memory Alloys

2011 ◽  
Vol 243-249 ◽  
pp. 5427-5434
Author(s):  
Hui Qian ◽  
Hong Nan Li ◽  
Di Cui ◽  
Huai Chen
Keyword(s):  
Reinforced Concrete ◽  
Energy Dissipation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Vibration Control ◽  
Case Studies ◽  
Precast Concrete ◽  
Reinforced Concrete Beams ◽  
Seismic Vibration ◽  
Concrete Members

Shape memory alloys (SMAs) are unique class materials that have the ability to undergo large deformations, while returning to their undeformed shape through either the applications of heat (SME) or removal of stress (SE). The unique properties lead to their wide applications in the biomedical, mechanical, aerospace, commercial industries, and recently in civil engineering. The paper presents two case studies of structural seismic vibration control using SMAs. The first one is a study of the SMA reinforced RC members. Two innovative applications in RC members, such as SMA-based Precast Concrete Frame Connection (SMA-PCFC), and SMA reinforced RC short column, were proposed. Moreover, the self-rehabilitation properties of SMAs-based Intelligent Reinforced Concrete Beams (SMA-IRCBs) were further experimentally investigated. The results show that SMAs can improve the mechanical properties of concrete members. SMA reinforced RC members have unique seismic performance compared to ordinarily steel reinforced concrete members. The second one is a study of the structural energy dissipation system using SMAs damping device. An innovative hybrid SMAs friction device (HSMAFD) which consists of pre-tensioned superelastic SMA wires and friction devices (FD) was presented. The results of cyclic tensile tests show that the HSMAFD exhibits stable large energy dissipation capacity and re-centering feature. The effectiveness of the HSMAFD in reducing horizontal response of structures subjected to strong seismic excitations was verified through shaking table tests carried out on a reduced-scale symmetric steel frame model with and without the HSMAFD.

Case studies on the seismic behavior of reinforced concrete chevron braced framed buildings

2012 ◽  
Vol 45 ◽  
pp. 78-103 ◽  
Author(s):  
Eber Alberto Godínez-Domínguez ◽  
Arturo Tena-Colunga ◽  
Luis Eduardo Pérez-Rocha
Keyword(s):  
Reinforced Concrete ◽  
Case Studies ◽  
Seismic Behavior

scholarly journals Measuring bilingualism: The quest for a “bilingualism quotient”

2020 ◽  
pp. 1-22
Author(s):  
Viorica Marian ◽  
Sayuri Hayakawa
Keyword(s):  
Case Studies ◽  
Scientific Inquiry ◽  
Intelligence Quotient ◽  
Neural Function ◽  
Unified Approach ◽  
Concrete Case ◽  
Sociocultural Identity

Abstract The study of bilingualism has a history that extends from deciphering ancient multilingual texts to mapping the structure of the multilingual brain. The language experiences of individual bilinguals are equally diverse and characterized by unique contexts of acquisition and use that can shape not only sociocultural identity but also cognitive and neural function. Perhaps unsurprisingly, this variability in scholarly perspectives and language experiences has given rise to a range of methods for defining bilingualism. The goal of this article is to initiate a conversation about the utility of a more unified approach to how we think about, study, and measure bilingualism. Using concrete case studies, we illustrate the value of enhancing communication and streamlining terminology across researchers with different methodologies within questions, different questions within domains, and different domains within scientific inquiry. We specifically consider the utility and feasibility of a bilingualism quotient (BQ) construct, discuss the idea of a BQ relative to the well-established intelligence quotient, and include recommendations for next steps. We conclude that though the variability in language backgrounds and approaches to defining bilingualism presents significant challenges, concerted efforts to systematize and synthesize research across the field may enable the construction of a valid and generalizable index of multilingual experience.

Massimo Quaini: geografia storica, fonti, conoscenze territoriali e loro uso politico e socio-culturale

2021 ◽  
pp. 81-79
Author(s):  
Leonardo Rombai
Keyword(s):  
Case Studies ◽  
Local Knowledge ◽  
Sustainable Management ◽  
Historical Geography ◽  
Concrete Case ◽  
Institutional Planning ◽  
Documentary Sources ◽  
Critical Contextualization

Quaini's commitment is aimed – with the development of the Gambian concept – towards the construction of a critical and operational historical geography (usable for the aware and sustainable management, institutional planning and socio-cultural use of territories), through innovative theoretical-methodological reflections and concrete case studies: with a focus on the landscape-territorial historicity and the heritage of regions and places, and openness to interdisciplinarity and local knowledge, integrating – with exemplary critical contextualization – the written and graphic documentary sources with those of the terrain.

Mother Earth, Mother Africa and Mission

2021 ◽  
Keyword(s):  
Qualitative Research ◽  
Case Studies ◽  
African Women ◽  
Biblical Exegesis ◽  
Current Crisis ◽  
Concrete Case ◽  
Scriptural Interpretation ◽  
The Earth ◽  
Women Scholars ◽  
Mother Earth

The volume is significant in bringing together voices of African women theologians and their allies on the urgent topic of ecology. First, it decisively intervenes into scholarly discourses on ecofeminism by highlighting the reflections of African women scholars and African women as subjects. This function of the volume is very important both at local and global levels. Second, it contributes to contextualizing of scriptural interpretation around the issue of ecology. Biblical reflection occurs throughout the volume and is put into dialogue with African traditions, with ecofeminism, with Africa-based mission projects, and with the current crisis of sustainability and African women’s roles in protecting the earth. Third, the volume includes several concrete case studies based on interviews and grassroots qualitative research, as well as especially original articles that integrate biblical exegesis of Genesis with reflections on patriarchal legal systems in Botswana, and an original take on “male headship” in relation to ecofeminism.

scholarly journals Ultimate Flexural Capacity of Reinforced Concrete Elements Damaged by Corrosion

Buildings ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 160 ◽  
Author(s):  
Bossio ◽  
Imperatore ◽  
Kioumarsi
Keyword(s):  
Reinforced Concrete ◽  
Flexural Strength ◽  
Case Studies ◽  
Steel Corrosion ◽  
Experimental Results ◽  
Reinforced Concrete Structures ◽  
Flexural Capacity ◽  
Static Behavior ◽  
Fem Model ◽  
Concrete Elements

Worldwide, steel corrosion is one of the greatest deterioration problems for reinforced concrete structures. Comparing some experimental results from literature with a complex FEM model, the present paper points out the principal aspects that characterize the static behavior of reinforced concrete (RC) elements damaged by corrosion. Moreover, the nondimensional abaci defined for some specific case studies finalized to the evaluation of the residual flexural strength of corroded elements highlight the dangerousness of the corrosion degradation if the failure of the element is governed by the steel.

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