1、本工程位于所以按照類地區(qū)50年一遇的風(fēng)壓計(jì)算對(duì)于平坦或稍有起伏的地形，風(fēng)壓高度變化系數(shù)應(yīng)根據(jù)地面粗糙類別按下表采用現(xiàn)計(jì)算27.9m高的風(fēng)荷載標(biāo)準(zhǔn)值地面粗糙度可分為A、B、C、D四類;玻璃幕墻的風(fēng)荷載標(biāo)準(zhǔn)值應(yīng)按下式計(jì)算，并且不應(yīng)小于1.00KN/m2Awk= gzszw0=1.615(KN/m2)B式中Cwk風(fēng)荷載標(biāo)準(zhǔn)值(KN/m2)Dgz=1.850陣風(fēng)系數(shù)，按GB-50009-2001規(guī)定采用3s=1.2風(fēng)荷載體型系數(shù)，一般墻面區(qū)取1.2,墻角區(qū)取2.0Cz=0.970風(fēng)壓高度變化系數(shù)，按GB-50009-2001規(guī)定采用w0=0.75基本風(fēng)壓(KN/m2),按GB-50009-2001規(guī)定

2、采用由上述計(jì)算可知，wk=1.621.00(KN/m2)所所以以風(fēng)風(fēng)荷荷載載標(biāo)標(biāo)準(zhǔn)準(zhǔn)值值wk=1.6151.615(KN/m2)C合肥A指近海海面和海島、海岸、湖岸及沙漠地區(qū)指田野、鄉(xiāng)村、叢林、丘陵以及房屋比較稀疏的鄉(xiāng)鎮(zhèn)和城市郊區(qū)指有密集建筑群的城市市區(qū)指有密集建筑群且房屋較高的城市市區(qū)表7.2.1 風(fēng)壓高度變化系數(shù)z風(fēng)壓高度變化系數(shù)z離地面或海平面高度(m)地面粗糙度類別離地面高度ABCD4503.123.123.123.12A類=1.379xEXP(0.24xLN(Z/10)4003.123.123.122.911.7643503.123.122.942.683003.122.972.75

3、2.45B類=EXP(0.32xLN(Z/10)2502.992.802.542.191.3892002.832.612.301.921502.642.382.031.61C類=0.616xEXP(0.44xLN(Z/10)1002.402.091.701.270.967902.342.021.621.19802.271.951.541.11D類=0.318xEXP(0.60 xLN(Z/10)702.201.861.451.020.620602.121.771.350.93502.031.671.250.84401.921.561.130.73301.801.421.000.62201.63

4、1.250.840.62151.521.140.740.62101.381.000.740.6251.171.000.740.62城市名基本風(fēng)壓北京0.45天津0.5上海0.55重慶0.4石家莊0.35對(duì)于平坦或稍有起伏的地形，風(fēng)壓高度變化系數(shù)應(yīng)根據(jù)地面粗糙類別按下表采用地面粗糙度可分為A、B、C、D四類;邢臺(tái)0.3張家口0.55承德0.4秦皇島0.45唐山0.4保定0.4滄州0.4大同0.55太原0.4陽(yáng)泉0.4臨沂0.4包頭0.55呼和浩特0.55通遼0.55阜陽(yáng)0.6朝陽(yáng)0.55錦州0.6鞍山0.5沈陽(yáng)0.55本溪0.45營(yíng)口0.6丹東0.55大連0.65四平0.55長(zhǎng)春0.65吉林0.

5、5通化0.5齊齊哈爾0.45鶴崗0.4綏化0.55佳木斯0.65哈爾濱0.55牡丹江0.5德州0.45煙臺(tái)0.55威海0.65濟(jì)南0.45泰安0.4濰坊0.4青島0.6兗州0.4萊陽(yáng)0.4徐洲0.35淮陰0.4南京0.4南通0.45常州0.4杭州0.45舟山0.85金華0.35衢州0.35寧波0.5溫州0.6蚌埠0.35六安0.35合肥0.35安慶0.4黃山0.35贛州0.3九江0.35景德鎮(zhèn)0.35南昌0.45樟樹(shù)0.3邵武0.3南平0.35福州0.7龍巖0.35廈門(mén)0.8延安0.35寶雞0.35西安0.35漢中0.3安康0.45酒泉0.55張掖0.5蘭州0.3平?jīng)?.3天水0.35銀川0.

6、65格爾木0.4西寧0.35玉樹(shù)0.3伊寧0.6烏魯木齊0.6庫(kù)爾勒0.45哈密0.7安陽(yáng)0.45新鄉(xiāng)0.45三門(mén)峽0.4洛陽(yáng)0.4鄭州0.45許昌0.4開(kāi)封0.45南陽(yáng)0.35駐馬店0.4商丘0.35棗陽(yáng)0.4施恩0.3宜昌0.3天門(mén)0.3武漢0.35黃石0.35岳陽(yáng)0.4吉首0.3常德0.4衡陽(yáng)0.4郴州0.3長(zhǎng)沙0.35韶關(guān)0.35梅縣0.3廣州0.5汕頭0.8深圳0.75湛江0.8桂林0.3柳州0.3梧州0.3南寧0.35北海0.7海口0.75三亞0.85綿陽(yáng)0.3成都0.3內(nèi)江0.4涪陵0.3遵義0.3貴陽(yáng)0.3大理0.65昆明0.3麗江0.361陣風(fēng)系數(shù)gz脈動(dòng)系數(shù)f27.9m離地

7、面高度27.9mA類=0.92x(1+2f)f=0.387xEXP(-0.12xLN(Z/10)1.550f=0.3422B類=0.89x(1+2f)f=0.5xEXP(-0.16xLN(Z/10)1.645f=0.4243C類=0.85x(1+2f)f=0.734xEXP(-0.22xLN(Z/10)1.846f=0.5857D類=0.80 x(1+2f)f=1.2248xEXP(-0.3xLN(Z/10)2.240f=0.9003=1.379xEXP(0.24xLN(Z/10)=EXP(0.32xLN(Z/10)=0.616xEXP(0.44xLN(Z/10)=0.318xEXP(0.60

8、 xLN(Z/10)表7.5.1.陣風(fēng)系數(shù)gz離地面或海平面高度(m)地面粗糙度類別ABCD51.691.882.303.21101.631.782.102.76151.601.721.992.54201.581.691.922.39301.541.641.832.21401.521.601.772.09501.511.581.732.01601.491.561.691.94701.481.541.661.89801.471.531.641.85901.471.521.621.811001.461.511.601.781501.431.471.541.672001.421.441.501.602501.4