外文翻譯--超高層建筑結(jié)構(gòu)橫向風荷載效應(yīng)

1、 畢業(yè)設(shè)計外文翻譯 畢業(yè)設(shè)計外文翻譯題 目 超高層建筑結(jié)構(gòu)橫向風荷載效應(yīng) 學 院 土木工程學院 專 業(yè) 土木工程 班 級 土木 0903 班 學 生 蔡江紅 學 號 20090622003

2、 指導(dǎo)教師 指導(dǎo)教師 謝群 二〇一三年三月二日of 828 m has just been completed. In developed countries, there are even proposals to build “cities in the air” with thousands of meters of magnitude. With the increase

3、 in height and use of light and high-strength materials, wind-induced dynamic responses, especially across-wind dynamic responses of super-tall buildings and structures with low damping, will become more notable. Hence,

4、strong wind load will become an important control factor in designing safe super-tall buildings and structures. Davenport initially introduced stochastic concepts and methods into wind-resistant study on along-wind loads

5、 and effects of buildings and other structures. Afterward, researchers developed related theories and methods, and the main research results have already been reflected in the load codes of some countries for the design

6、of buildings and structures. For modern super-tall buildings and structures, across- wind loads and effects may surpass along-wind ones. Although researchers have been focusing on the complex problem for over 30 years no

7、w, the widely accepted data-base of across-wind loads and computation methods of equivalent static wind loads have not been formed yet. Only a few countries have accordingly adopted the related con-tents and provisions i

8、n their codes. Therefore, studying across-wind vibration and the equivalent static wind loads of super-tall buildings and structures is of great theoretical significance and practical value in the field of structural de

9、sign of super-tall buildings and structures. The current paper thus reviews the research situation of across-wind loads and effects of super-tall buildings and structures both at home and abroad. Then, the research resul

10、ts given by us are presented. Finally, a case study of across-wind loads and effects of a typical super-tall structure is illustrated.Mechanism of across-wind loads and effects Previous researches focused mainly on the m

11、echanism of across-wind load. Kwok pointed out that across-wind excitation comes from wake, inflow turbulence, and wind-structure interaction effect, which could be recognized as aerodynamic damping. Solari attributed th

12、e across-wind load to across-wind turbulence and wake excitations, considering wake as the main excitation. Islam et al. and Kareem claimed that across-wind responses are induced by lateral uniform pressure fluctuation d