發(fā)布時間：2018-05-29 14:50

  本文選題：超高層 + 復雜裝飾條��； 參考：《工程力學》2016年08期

【摘要】：為展現(xiàn)建筑外形的多變性,超高層建筑外表面布置的裝飾條尺寸越來越大,布置形式越來越靈活多變,其抗風安全性變得越來越突出。但裝飾結(jié)構(gòu)由于其體量小數(shù)量多而導致風洞試驗難于直接測試其風荷載,因此該文研究利用數(shù)值風洞技術(shù)分析裝飾結(jié)構(gòu)的風荷載問題。以上海前灘一超高層為工程背景,該建筑外圍四個面共布置72根裝飾條,其中外圍裝飾條220 m高度以下均勻布置,220 m高度以上空間曲線交錯布置。通過建立包括裝飾條以及周邊建筑的空間幾何模型,求解不同風向角下的流場分布,從而獲取了裝飾條上的作用風荷載。通過統(tǒng)計分析不同風向角下不同高度區(qū)域裝飾條的法向和切向風荷載系數(shù)分布特點,得出裝飾條所受風荷載表現(xiàn)為明顯的建筑拐角區(qū)域大而建筑平順區(qū)域小的分布規(guī)律,并分析了其原因。給出裝飾條的風荷載計算可以按照建筑外形劃分為拐角區(qū)域、平順區(qū)域以及過渡區(qū)域分別加以考慮,以及各個區(qū)域風荷載系數(shù)的控制取值,該結(jié)果可供類似工程項目設(shè)計提供參考。最后選取整體建筑表面的一些典型位置,對比了該些位置處風壓的風洞試驗結(jié)果與數(shù)值模擬結(jié)果,驗證了數(shù)值模擬的可靠性。
[Abstract]:In order to show the variability of building shape, the outer surface decoration strip size of super high-rise building is larger and larger, the layout form is more and more flexible and changeable, and its wind safety becomes more and more prominent. However, the wind tunnel test is difficult to directly test the wind load of decorative structure because of its small volume and large quantity. Therefore, the numerical wind tunnel technique is used to analyze the wind load problem of decorative structure in this paper. In the background of Shanghai Qiantan super-high building, 72 decorative strips are arranged on the four sides of the building, in which the outer decoration strip is evenly arranged below 220m height and the space curve is staggered above 220m height. The flow field distribution under different wind direction angles is solved by establishing the spatial geometric model including the decorative strip and the surrounding building, and the action wind load on the decorative strip is obtained. Based on the statistical analysis of the distribution characteristics of normal and tangential wind load coefficients in different height and different wind angles, it is concluded that the distribution of wind load on decorative strips is obviously large in the corner of the building and small in the smooth zone of the building. The reasons are analyzed. The wind load calculation of the decorative strip can be divided into corner region, smooth zone and transition area according to the shape of the building, as well as the control value of wind load coefficient in each region. The results can be used as a reference for the design of similar engineering projects. Finally, some typical locations of the whole building surface are selected, and the results of wind tunnel test and numerical simulation at these locations are compared to verify the reliability of the numerical simulation.
【作者單位】： 上海應用技術(shù)學院城市建設(shè)與安全工程學院;同濟大學土木工程防災國家重點實驗室;
【基金】：上海市科委基金項目(13ZR1441100)
【分類號】：TU973.213

【相似文獻】

相關(guān)期刊論文 前2條

1 徐皓;;大連萬達中心外立面裝飾工程大裝飾條設(shè)計與計算[J];門窗;2011年03期

2 ;[J];;年期

相關(guān)會議論文 前1條

1 馮振宇;周自偉;;清水裝飾砼施工綜合技術(shù)[A];河南省土木建筑學會2010年學術(shù)研討會論文集[C];2010年

，

本文編號：1951274