- 摘 要
-
(1 天津大學(xué)建筑工程學(xué)院， 天津 300072；2 中交第一航務(wù)工程設(shè)計院， 天津 300222；3 滄州市黃驊港務(wù)局， 滄州 061113)
［摘要］黃驊港VTS雷達(dá)塔屬于鋼筋混凝土高聳結(jié)構(gòu)，外部18根框架柱呈輻射狀布置。以VTS雷達(dá)塔為背景，運用計算流體力學(xué)（CFD）方法對雷達(dá)塔結(jié)構(gòu)及幾個圓柱形結(jié)構(gòu)的風(fēng)荷載進(jìn)行模擬，得到了結(jié)構(gòu)表面不同凸起情況下的風(fēng)場和風(fēng)壓分布規(guī)律。研究發(fā)現(xiàn)結(jié)構(gòu)表面凸起的出現(xiàn)會直接影響風(fēng)壓系數(shù)分布曲線的平臺區(qū)及結(jié)構(gòu)尾流，負(fù)風(fēng)壓最大值會因為建筑物表面的凸起而大幅減小；風(fēng)壓系數(shù)分布曲線的平臺區(qū)的寬度、正風(fēng)壓最大值與結(jié)構(gòu)背風(fēng)面尾流的狀態(tài)、表面凸起高度等因素之間無明顯關(guān)聯(lián)。
［關(guān)鍵詞］雷達(dá)塔； 數(shù)值模擬； 風(fēng)荷載； 風(fēng)壓系數(shù)
中圖分類號：TU312文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)09-0127-06
Numerical simulation of wind load on cylindrical buildings with convex surfaces
Wang Jianshuo1， Liu Hongbo 1， Chen Zhihua1， Li Jinhua2， Ji Hongxu3
(1 School of Civil Engineering， Tianjin University， Tianjin 300072， China； 2 CCCC First Harbor Consultants Co.， Ltd.， Tianjin 300222， China； 3 Huanghua Harbor Office of Cangzhou City， Cangzhou 061113， China)
Abstract:The VTS radar tower in Huanghua Port is a reinforced concrete high-rise structure. The 18 frame columns were arranged radially. The computational fluid dynamics (CFD) method was used to simulate the wind load on cylindrical buildings with ridges, and the distribution of wind field was obtained based on the VTS radar tower. Results show that the appearance of convex surfaces impacts the platform area of wind pressure coefficient curves and leeward wakes of wind field directly. The maximum negative pressure is greatly reduced because of the convex surfaces of the building. The platform area width of pressure distribution curves and the maximum positive pressure are not obviously associated with state of the leeward wake of the structure and the height of convex surfaces.
Keywords:radar tower; numerical simulation; wind load; pressure coefficient
*高等學(xué)校全國優(yōu)秀博士學(xué)位論文作者專項基金（201453）。
作者簡介：王建爍，博士研究生，Email：wjs_mutong@163.com。
