Crimson Publishers-Civil Engineering Journal

  In the wake of the catastrophic event of September 11, 2001 that brought down the World Trade Center buildings in New York, naysayers hastily predicted that it marked the end of future skyscraper construction. Engineers and architects who knew the history of tall buildings in cities, however, knew that these urban edifices did not surface fortuitously, but rather were essential to address the problems of increased human habitation as the world population continued to grow and people were moving from rural areas to cities. During the presentations of papers on tall buildings in different settings, I faced critics of tall buildings and tried to get across to them the logic behind the unrelenting development of tall buildings in the absence of alternate viable solutions to the problem of increasing high density in cities. Admittedly, tall buildings have a few shortcomings. Yet, there is no reason urban sprawl should be created or encouraged horizontally with its many associated draw...

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Recently, bridges are becoming longer, wider and more sophisticated in China and over the world, in particular, with longer span length or so-called long span bridges. Nevertheless, achievements and challenge are coexisting in girder, arch, cable-stayed and suspension types. Long span girder bridges Girder bridges are most widely used bridge type with three sub-categories, simply supported system, continuous system and continuous rigid frame system. The current longest span of simply supported beam bridge is only 76m while continuous beam bridge has the longest span of 165m. Continuous rigid frame bridge has the shortest history but the greatest bridging capacity in girder bridges. The span length of this type of girder bridge firstly exceeded 250m in Humen Bridge of 270m China in 1997, and gradually increased to 330m in the 2nd Shibanpo Bridge in China in 2006. Read more about this article:  https://crimsonpublishers.com/acet/fulltext/ACET.000559.php For more articles in our ...

Abstract The technological process of the production of prefabricated and monolith reinforced concrete products presupposes the use of raw materials with the required characteristics, the use of the rational composition of the concrete mix, its qualitative preparation, problem-free transportation, packing in a form, the careful compaction and ensuring of the favorable conditions for solidification. This is all true. The presented technological sequence is a well-known and generally accepted scheme of normal production. At the same time, it is difficult to call such a process directional. It cannot be directed because after all these required preparatory operations the fundamental aspect the formation of concret’s structure and characteristics are left to the concrete itself. In the process of solidification, both positive and negative phenomena are stochastically flowing and superposing on each other. So it is difficult to predict which of them will have a predominant effect on the fin...

Abstract In the second half of the nineteenth century, scholars and professors discussed a lot about the education of civil engineer, reflecting on the relationship between research and teaching and about the importance of theoretical lectures and the practical exercises. The mini-review discusses the same relationship, still actual, based on a note signed by Uzielli [1]; (1839-1911), teacher of Mineralogy and Geology in the Regia Scuola di applicazione per gli ingegneri in Torino now Politecnico of Torino, an important tool in order to valuate the link between research and teaching. Uzielli [1] wrote about a rock derived from quartz, giving to the students of the school of engineering the outcome of his research about Leonardo da Vinci- so-called Vinciano, a man considered the forerunner of the nineteenth-century progress, able to deal original themes in the fifteenth and sixteenth century that became key topics for the education of the engineer in the nineteenth century. At the same ...

Abstract One of the modern earthquake-resistant seismic design approaches is the performance-based earthquake engineering approach, such as the method of fragility assessment. There are several methods of the development of the fragility curves. This paper provides a short review of the development of fragility curves on the basis of incremental dynamic analysis (IDA) and highlights the main approaches for the selection of ground motions, the importance of the IDA and the performance levels. Read more about this article:  https://crimsonpublishers.com/acet/fulltext/ACET.000556.php For more articles in our journal:  https://crimsonpublishers.com/acet/