1,720,964 research outputs found
BIM application in infrastructure project in the reuse of historical cities
No full textThe evolution of the Smart cities in the old town is one of the most important aspects developed by the European Municipalities. To develop a smart city in an old town, the municipality must design new infrastructures for transports, subway lines, underground parking areas and, furthermore, design new technological systems for lighting, heating-cooling and other services. The possible interferences between the historical buildings and existing infrastructures during design, construction and for the facility management are well known. In this way, the BIM Modelling of the existing and old town help designers and owners to envelope new projects to re-green the cities or to transform them. The example shown in this article is about the new metro line and stations of Copenhagen. In this work, a process to envelope the BEP for the survey and the base model to develop the construction and evaluate the interferences with the existing buildings is suggested. A complete BEP may help to envelope an integrate model to represent:
- 3D for the modeling and analysis of the city, MEP, Structural and architectural modeling for the new metro station.
- 4D for the association of all the model elements to a specific temporal phase during construction, for the coordination of the several subcontractor companies regarding excavation works, tunneling, casting, reinforcement and electromechanical works, for both stations and tunnels.
- 5D for the computing and estimation for all the works.
- 6D regarding the sustainability.
- 7D regarding the underground facility and monitoring management
The Trezzo sull’Adda’s Castle: restoration and reuse of the Cultural Heritage for a sustainable future use
No full textThe themes of recovery, restoration and safeguarding of the artistic, architectural and landscape heritage of our country, since several years have been addressed in different areas like technical research, legislation, manufacturing techniques, and is debated in national and international context. Despite the very important contributions from these areas, the missing ring in the chain, often, is the vision of the economic management of the future reuse of the buildings and of the environmental sustainability. The costs of these operations are so challenging that only a clear prediction of the "future economic capacity" of the restored object it can encourage the restoration. Here we show an emblematic case history, where studies and works, are planned for the restoration of the entire area of the Visconti Castle in Trezzo sull’Adda. The topic is that the "start-up" of the process has been developed both in parallel with cultural aspects and social-economic studies on the entire area where the town of Trezzo, for historical and geographical reasons, has a prominent position. The results of these documented studies and the undoubtedly propositional attitudes of the Municipal leaders have pushed this administration to undertake and finalize the restoration of the castle, with the purpose to create facilities for the entire area social re-use by the population and to stimulate, a sustainable development
The Industrial Building Heritage : first steps for the Damages Evaluation of Innocenti-Maserati Structural Plant
No full textThe problems concerning the requalification of dismissed and, since many years, abandoned industrial plants and sites require different approaches and competencies. The authors have been involved in many different cases bounded to the industrial activities which have been developed during the early first half of the last century around Milano city, some of them have been firstly dismissed at the beginning of 80’s years. In many cases, problems concerning the land pollution, and the prior related costs of the land drainage have stopped the different necessary approaches regarding the assessment on the actual conservation and damage evaluation of existing abandoned buildings. Among these , works for land drainage and reclamation are planned, some in progress; in particular the “Innocenti-Maserati firm” is one of a major remaining industrial complex in the suburban district of Milano, with its 4 industrial hangars, completed dismissed and emptied out, and showing the steel bearing structures in their impressive shape of large dimension (figure 1). The paper focuses on the evaluation of the actual mechanical and physical properties of the structural elements, no less the modelling about one of the dismissed buildings; in particular the building under investigation is the oldest of the four. The paper illustrates a brief history of the Innocenti Milan Industrial Compound, the description of the structures, the on-site investigation and Laboratory tests for the evaluation of the overall distribution and degree of corrosion attack in steel structural elements
REDEVELOPMENT OF EXISTING BUILDINGS: THE CASE OF THE GALFA TOWER IN MILAN
Full text linkA detailed structural analysis (under seismic and wind loads) of an historical tall building in Milan is carried out in this paper. Galfa tower is one of the first tall building (109 m height) built in Italy during the ‘50 years. Nowadays, it is interested by an important restoration process involving also a change in its intended use (from office to luxury hotel and residences).
Several destructive, non-destructive and combined tests were performed in order to investigate the on-site characteristics of concrete. Moreover, additional mechanical and chemical tests on the steel reinforcement are performed too. Some finite elements models (FEMs) of the tower are implemented by using beam and plate elements and considering two different boundary conditions (fully constrained at foundation level and elastic soil support according to Winkler’s model). The interaction with the close existing lower buildings is considered as well.
In all of the FEMS the materials characteristics are assigned on the basis of the statistical interpretation of the on-site test results. The seismic and wind loads are applied according to the Italian Design Code (NTC).
The structural safety verifications are carried out in terms of shear and combined compressive-bending actions, whereas further ductility verifications are conducted considering suitable nonlinear behaviours of concrete and steel rebars
STRUCTURAL ANALYSIS FOR AN HISTORICAL R.C. TALL BUILDING RESTORATION
Full text linkn this paper a detailed structural analysis (under the seismic and wind loads) of an historical tall building in Milan is carried out. It’s one of the first tall building (109 m height) realized in Italy in the 56- 59 years, and an important restoration is affecting it with intended use change (from office to luxury hotel and residences).
To investigate the characteristics of concrete several destructive, non-destructive and combined tests are conducted. Moreover, additional destructive and chemical tests on the reinforced bars steel are performed too. Some finite elements models (FEMs) are implemented by using beam and plate elements considering two different boundary conditions (base fixed and elastic soil by Winkler model) and the interaction of the close existing lower constructions presence.
In all of the FEMs, the materials characteristics are assigned basing on the tests results and a their subsequent statistical interpretation. The seismic load, implemented by a response spectrum analysis, and the wind load are applied in according to the Italian Construction Code (NTC).
The structural resistance verifies are carried out in terms of shear and combined compressive-bending stress, whereas further ductility verifies are conducted considering appropriate nonlinear behaviours of the concrete and the steel bars.
Finally some hypothesis to improve the structural behaviour under the lateral loads are proposed by considering cost-benefit analysis
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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