scholarly journals The Influence of The Static Layout on The Stress and Deformation State for Concrete Arched Bridges with Upper Carriageway

2016 ◽  
Vol 5 (2) ◽  
pp. 61-74
Author(s):  
Ionut Dorin Vlad ◽  
Corina Chiotan

Abstract Arch bridges were the first constructions with considerable spans built by man, due to the materials and technologies available at that time. Afterwards, these works of art have diversified and are now solutions used in countless situations, especially when crossing deep valleys.Both their economic and architectonic aspects are hard to combat and have led to selecting this type of structure for more and more locations.The paper will contain a brief presentation of some aspects regarding upper path concrete arch bridges composition and design methods. Also, it will have a case study regarding structural stresses over the different construction stages, and for several support hypotheses.The case study will reflect the Crivadia viaduct, situated on DN 66, at km 150+672. The bridge has a main span of 59.20m and an overall height of 15.00m, serving a 7.80m wide carriageway and two 2.20m wide footways. It has a total length of 107.60m. Based on the results of the case study, conclusions will be drawn regarding stress variation over the construction stages and under different support hypothesis, comparing these with the initial results.

Author(s):  
Isabella GADY ◽  
Nancy KHWEISS ◽  
María TARANCÓN

This case study explores the application of design methods and tools in women’s rights programming and feminist grant making - both areas that are, despite growing interest and evidence on potential benefits, still rather underexplored. In 2018, following its first independent evaluation and with the aim to increase its grantees‘ qualitative impact, the Fund for Gender Equality, a grant-making mechanism of the United Nations Entity for Gender Equality and Empowerment of Women, launched Re-Think. Experiment., an initiative exploring the potential for design to serve as a tool for innovation of programs. Through providing training in key principles of the design process and a safe space for experimentation, nine women-led civil society organizations operating in eleven countries have been equipped with tools and methodologies tailored to their needs to address specific project challenges. This case study introduces context, process and initial results of the initiative and discusses whether hopes for design to serve as a tool to foster innovation were met. Furthermore, it offers a critical reflection on its limitations, the need for contextualizing tools, and growing opportunities by marrying design methods with other social innovation disciplines.


Fachsprache ◽  
2017 ◽  
Vol 33 (3-4) ◽  
pp. 187-204
Author(s):  
Nina Janich ◽  
Ekaterina Zakharova

goal of the present discourse analysis is to report on the initial results of a DFG project on communication in interdisciplinary projects. Based on a case study, the following questions were investigated: 1) at what times or phases of a project communication problems occur, 2) what kinds of problems occur as a result of knowledge asymmetries, and 3) which interactive and discourse roles do participants take on when facing such problems? Three main conclusions can be drawn from the findings; first, that linguistic-communicative problems occurring in interdisciplinary projects are not simply a result of attempts to find a “common language”, but are grounded in issues of contextual, methodological, organisitory, and socio-pragmatic agreements. Second, these communication problems arise during the initial, preparatory phases of a project, earlier than social scientific process models suggest, i. e. as early as the writing and submission of the project proposal, as opposed to when the project work actually begins. Third, that these problems, induced by the inevitable presence of knowledge asymmetries among participants, must be resolved not only through active and consistent meta-communication, but also through meta-meta-communication. Evidence for these findings was gathered by means of interviews with project participants in which they reflected on the phase of jointly writing their project proposal from the perspective of their respective disciplines.


1998 ◽  
Vol 37 (1) ◽  
pp. 155-162
Author(s):  
Flemming Schlütter ◽  
Kjeld Schaarup-Jensen

Increased knowledge of the processes which govern the transport of solids in sewers is necessary in order to develop more reliable and applicable sediment transport models for sewer systems. Proper validation of these are essential. For that purpose thorough field measurements are imperative. This paper renders initial results obtained in an ongoing case study of a Danish combined sewer system in Frejlev, a small town southwest of Aalborg, Denmark. Field data are presented concerning estimation of the sediment transport during dry weather. Finally, considerations on how to approach numerical modelling is made based on numerical simulations using MOUSE TRAP (DHI 1993).


2021 ◽  
Vol 13 (14) ◽  
pp. 7543
Author(s):  
Carla Pestana ◽  
Luísa Barros ◽  
Sabrina Scuri ◽  
Mary Barreto

The adoption of energy efficiency practices and increased penetration of renewable energy sources in the power system are estimated to play a key role in the decarbonization of the energy sector, helping reduce greenhouse gas emissions and ultimately fight climate change. To foster energy transition, energy education initiatives should primarily target the citizens and be designed adopting a User-Centered Design (UCD) approach and HCI methodologies. This paper describes how UCD/HCI can inform the design of citizens’ energy education initiatives by presenting a case study—the development of an information platform targeting Madeiran citizens. The article describes the design process, from ideation to prototype and validation. Methods used in each phase (card sorting, semi-structured interviews, brainstorming sessions, think-aloud protocol and surveys) are described. Results of each phase and how they have informed the following steps are presented, together with a detailed description of the resulting information platform and initial results in terms of acceptance and interaction with the system. Our initial results support the hypothesis that adopting an HCI perspective can nurture the development of energy education initiatives targeting citizens, bringing a user-centered approach to the design of such initiatives.


2018 ◽  
Vol 878 ◽  
pp. 89-94 ◽  
Author(s):  
Er Lei Wang

Implementing monitoring over construction process of old bridge’s reinforcement serves as an important measure to ensure construction quality and safety and realize the goal of reinforcement. This paper, with a case study of the maintenance and reinforcement project of Zhicheng Yangtze River Bridge (steel truss highway-railway combined bridge), adopted MIDAS to establish finite element analysis model, and with stress and deformation as monitoring parameters, completed the construction monitoring work, numerical simulation analysis and site test for the reinforcement project.


2019 ◽  
Vol 4 (2) ◽  
pp. 229-241 ◽  
Author(s):  
Kirsi Manninen

This article presents a method for costume design, where empathy and embodiment are used as methodological choices by the designer in the character-creation process. In creating references for the sketching process, costume designers combine photos in which they portray themselves as the character that they imagine. These role-selfies, taken with a handheld tablet, work as starting points for the sketching procedure. The material for the present study is collected from MA costume design students who participated in digital character-creation courses at Aalto University, in Helsinki, Finland, and is a part of doctoral research by the author. The data are collected through a mixed-method approach and is organized as a case study investigating the experiences of using the body as a source for costume design. The research question in this study is as follows: does an awareness of one’s own body facilitate the sketching process? The initial results show that the research participants consider the method useful because it enables them to experience a stronger bodily connection with the digital medium, the imagined design and the emerging character in the costume sketching process. Hence, the findings of this study can be used to develop design and teaching practices not only in the field of costume design but also in other design processes involving character creation.


2021 ◽  
Vol 37 (1) ◽  
pp. 146-180
Author(s):  
Roslina Abdul Latif ◽  
◽  
Sojoud Elgarrai ◽  

The following study of selected works of art by Zulkiflee Anwar Haque or better known as Zunar, a Malaysian political cartoonist from his book ‘Twit Twit Cincin’. This study is guided by the visual rhetoric theory that has three areas of study - nature, function and evaluation. The study looks at selected cartoons that addressed political figures, politics and social issues. The research looked at the way the caricatures portrayed Malaysian politicians, his perspectives on the political and social issues and how these issues were addressed. The researcher also looked at metaphors used by the cartoonist to communicate his ideas to the audiences. The study found that Zunar’s portrait of Malaysian politicians is not always positive. He is critical but not in an inflammatory way. The metaphors found in Zunar’s work are found to be common themes and simple to understand. They are also very well-known, visually appealing and a tool to tie his messages together and to get his ideas across. Zunar has managed to resist the oppression of the state through his cartoons while looking at institutional reform, puts forth an alternative articulation of history and nation that juxtapose the current government. Keywords: Zunar, political cartoonist, political and social issues, Twit Twit Cincin, metaphors.


2021 ◽  
Author(s):  
Gábor Pál ◽  
Attila Dési ◽  
András Kemenczés

<p>The design and construction process of the unique cycling bridges at Lake Tisza are presented in this article. The 4 new bridges are parts of the closing segment of the cycle route around the artificial reservoir, which is a popular tourist destination in Hungary, and part of the UNESCO World Heritage. The proximity of the natural environment motivated the use of organic, flowing shapes.</p><p>The unique Eger- and Szomorka bridges are independent continuous half-through arch bridges, 8 spans with a total length of 308.46m, and 3 spans with a total length of 86.30 m, respectively. The bridge over River Tisza is a 5 span bridge with a total length of 279.47 m, which is placed on the extended piers of the existing roadway bridge. It consists of 2 deck truss bridges on the side-spans and 3 network arch bridges in the mid- spans. A 5.70 m span bascule bridge over one of the draining canals of the lake was also accomplished as part of the project.</p><p>The Eger and Szomorka bridges are internationally unique due to the fact that the Designers have dreamed a continuous sinusoid wave on the supports; which, by twirling under and above the deck, results in a continuous structure. The successful construction of the Tisza River Bridge also required some special and unprecedented construction methods.</p>


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