全国基本风压表34文档VIP免费

第1页门窗幕墙设计师必备手册——全国基本风压表发布日期：2019-07-17来源：中国幕墙网浏览次数：117核心提示：门窗幕墙设计师必备手册——全国基本风压表基本风压是以当地比较空旷平坦的地面上离地10m高统计所得的50年一遇10min平均最大风速为标准，按基本风压=最大风速的平方/1600确定的风压值(《建筑荷载规范》附录)。基本风压的计算：基本风压与风剖面、重现期、离地高度等因素有关，对于不同设计安全度的荷载规范，其基本风压亦有较大差别，如桥规与房屋风荷载规范中基本风压明显不同。由基本风压计算离地面10m高度处风速，最根本的方法要经过两次换算：首先，由规范基本风压及其风剖面换算至大气边界层梯度高度处风速，再由该风速按工程场地处风剖面换算得出离地10m高度处风速。注意，规范规定某一地区风压，给定的风剖面指数与梯度高度同该地区内工程场地相关参数可能有较大不同。下面给出由基本风压换算风速的一个例子：根据交通部《公路桥涵设计通用规范》(JTJ021-89)的规定，上海地区Ⅱ类地貌(风剖面指数α=0.14、梯度风高度δ=550m)上标准高度20m处、100年重现期对应的10min平均时距最大风压为800Pa，这样根据不同场地上风速的换算关系，可以确定上海地区(风剖面指数α=0.16、梯度风高度δ=600m)基本风速为:全国各城市的雪压和风压值全国各城市的50年一遇雪压和风压附表D.4省市名城市名海拔高度(m)风压(kN/m2)雪压(kN/m2)雪荷载准永久值系数分区n=10n=50n=100n=10n=50n=100北京54.00.300.450.500.250.400.45Ⅱ天津天津市3.30.300.500.600.250.400.45Ⅱ塘沽3.20.400.550.600.200.350.40Ⅱ上海2.80.400.550.600.100.200.25Ⅲ第2页重庆259.10.250.400.45河北石家庄市80.50.250.350.400.200.300.35Ⅱ蔚县909.50.200.300.350.200.300.35Ⅱ邢台市76.80.200.300.350.250.350.40Ⅱ丰宁659.70.300.400.450.150.250.30Ⅱ围场842.80.350.450.500.200.300.35Ⅱ张家口市724.20.350.550.600.150.250.30Ⅱ怀来536.80.250.350.400.150.200.25Ⅱ承德市377.20.300.400.450.200.300.35Ⅱ遵化54.90.300.400.450.250.400.50Ⅱ青龙227.20.250.300.350.250.400.45Ⅱ秦皇岛市2.10.350.450.500.150.250.30Ⅱ霸县9.00.250.400.450.200.300.35Ⅱ唐山市27.80.300.400.450.200.350.40Ⅱ乐亭10.50.300.400.450.250.400.45Ⅱ保定市17.20.300.400.450.200.350.40Ⅱ饶阳18.90.300.350.400.200.300.35Ⅱ沧州市9.60.300.400.450.200.300.35Ⅱ黄骅6.60.300.400.450.200.300.35Ⅱ南宫市27.40.250.350.400.150.250.30Ⅱ第3页山西太原市778.30.300.400.450.250.350.40Ⅱ右玉1345.80.200.300.35Ⅱ大同市1067.20.350.550.650.150.250.30Ⅱ河曲861.50.300.500.600.200.300.35Ⅱ五寨1401.00.300.400.450.200.250.30Ⅱ兴县1012.60.250.450.550.200.250.30Ⅱ原平828.20.300.500.600.200.300.35Ⅱ离石950.80.300.450.500.200.300.35Ⅱ阳泉市741.90.300.400.450.200.350.40Ⅱ榆社1041.40.200.300.350.200.300.35Ⅱ隰县1052.70.250.350.400.200.300.35Ⅱ介休743.90.250.400.450.200.300.35Ⅱ临汾市449.50.250.400.450.150.250.30Ⅱ长冶县991.80.300.500.60运城市376.00.300.400.450.150.250.30Ⅱ阳城659.50.300.450.150.250.300.35Ⅱ内蒙古呼和浩特1063.00.350.550.600.250.400.45Ⅱ额右旗拉布达林581.40.350.500.600.350.450.50Ⅰ牙克石市图里河732.60.300.400.450.400.600.70Ⅰ第4页满洲里市661.70.500.650.700.200.300.35Ⅰ海拉尔市610.20.450.650.750.350.450.50Ⅰ鄂伦春小二沟286.10.300.400.450.350.500.55Ⅰ新巴尔虎右旗554.20.450.600.650.250.400.45Ⅰ新巴尔虎左旗阿木古郎642.00.400.550.600.250.350.40Ⅰ牙克石市博克图739.70.400.550.600.350.550.65Ⅰ扎兰屯市306.50.300.400.450.350.550.65Ⅰ科右翼前旗阿尔山1027.40.350.500.550.450.600.70Ⅰ科右翼前旗索伦501.80.450.550.600.250.350.40Ⅰ乌兰浩特市274.70.400.550.600.200.300.35Ⅰ东乌珠穆沁旗838.70.350.550.650.200.300.35Ⅰ额济纳旗940.500.400.600.700.050.100.15Ⅱ额济纳旗拐子湖960.00.450.550.600.050.100.10Ⅱ阿左旗巴彦毛道1328.10.400.550.6...