基本风压Word文件下载.docx

基本风压Word文件下载.docx

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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

Ⅱ北京54.00.300.450.500.250.400.45

Ⅱ天津天津市3.30.300.500.600.250.400.45

Ⅱ塘沽3.20.400.550.600.200.350.40

Ⅱ上海2.80.400.550.600.100.200.25

Ⅲ重庆259.10.250.400.45

河北石家庄市80.50.250.350.400.200.300.35

Ⅱ蔚县909.50.200.300.350.200.300.35

Ⅱ邢台市76.80.200.300.350.250.350.40

Ⅱ丰宁659.70.300.400.450.150.250.30

Ⅱ围场842.80.350.450.500.200.300.35

Ⅱ张家口市724.20.350.550.600.150.250.30

Ⅱ怀来536.80.250.350.400.150.200.25

Ⅱ承德市377.20.300.400.450.200.300.35

Ⅱ遵化54.90.300.400.450.250.400.50

Ⅱ青龙227.20.250.300.350.250.400.45

Ⅱ秦皇岛市2.10.350.450.500.150.250.30

Ⅱ霸县9.00.250.400.450.200.300.35

Ⅱ唐山市27.80.300.400.450.200.350.40

Ⅱ乐亭10.50.300.400.450.250.400.45

Ⅱ保定市17.20.300.400.450.200.350.40

Ⅱ饶阳18.90.300.350.400.200.300.35

Ⅱ沧州市9.60.300.400.450.200.300.35

Ⅱ黄骅6.60.300.400.450.200.300.35

Ⅱ南宫市27.40.250.350.400.150.250.30

山西太原市778.30.300.400.450.250.350.40

Ⅱ右玉1345.80.200.300.35

Ⅱ大同市1067.20.350.550.650.150.250.30

Ⅱ河曲861.50.300.500.600.200.300.35

Ⅱ五寨1401.00.300.400.450.200.250.30

Ⅱ兴县1012.60.250.450.550.200.250.30

Ⅱ原平828.20.300.500.600.200.300.35

Ⅱ离石950.80.300.450.500.200.300.35

Ⅱ阳泉市741.90.300.400.450.200.350.40

Ⅱ榆社1041.40.200.300.350.200.300.35

Ⅱ隰县1052.70.250.350.400.200.300.35

Ⅱ介休743.90.250.400.450.200.300.35

Ⅱ临汾市449.50.250.400.450.150.250.30

Ⅱ长冶县991.80.300.500.60

运城市376.00.300.400.450.150.250.30

Ⅱ阳城659.50.300.450.150.250.300.35

内蒙古呼和浩特1063.00.350.550.600.250.400.45

Ⅱ额右旗拉布达林581.40.350.500.600.350.450.50

Ⅰ牙克石市图里河732.60.300.400.450.400.600.70

Ⅰ满洲里市661.70.500.650.700.200.300.35

Ⅰ海拉尔市610.20.450.650.750.350.450.50

Ⅰ鄂伦春小二沟286.10.300.400.450.350.500.55

Ⅰ新巴尔虎右旗554.20.450.600.650.250.400.45

Ⅰ新巴尔虎左旗阿木古郎642.00.400.550.600.250.350.40

Ⅰ牙克石市博克图739.70.400.550.600.350.550.65

Ⅰ扎兰屯市306.50.300.400.450.350.550.65

Ⅰ科右翼前旗阿尔山1027.40.350.500.550.450.600.70

Ⅰ科右翼前旗索伦501.80.450.550.600.250.350.40

Ⅰ乌兰浩特市274.70.400.550.600.200.300.35

Ⅰ东乌珠穆沁旗838.70.350.550.650.200.300.35

Ⅰ额济纳旗940.500.400.600.700.050.100.15

Ⅱ额济纳旗拐子湖960.00.450.550.600.050.100.10

Ⅱ阿左旗巴彦毛道1328.10.400.550.600.050.100.15

Ⅱ阿拉善右旗1510.10.450.550.600.050.100.10

Ⅱ二连浩特市964.70.550.650.700.150.250.30

Ⅱ那仁宝力格1181.60.400.550.600.200.300.35

Ⅰ达茂旗满都拉1225.20.500.750.850.150.200.25

Ⅱ阿巴嘎旗1126.10.350.500.550.250.350.40

Ⅰ苏尼特左旗1111.40.400.500.550.250.350.40

Ⅰ乌拉特后旗海力素1509.60.450.500.550.100.150.20

Ⅱ乌拉特中旗海流图1288.00.450.600.650.200.300.35

Ⅱ百灵庙1376.60.500.750.850.250.350.40

Ⅱ四子王旗1490.10.400.600.700.300.450.55

Ⅱ化德1482.70.450.750.850.150.250.30

Ⅱ杭锦后旗陕坝1056.70.300.450.500.150.200.25

Ⅱ包头市1067.20.350.550.600.150.250.30

Ⅱ集宁市1419.30.400.600.700.250.350.40

Ⅱ阿拉善左旗吉兰泰1031.80.350.500.550.50.100.15

Ⅱ临河市1039.30.300.500.600.150.250.30

Ⅱ鄂托克旗1380.30.350.550.650.150.200.20

Ⅱ东胜市1460.40.300.500.600.250.350.40

Ⅱ阿腾席连1329.30.400.500.550.200.300.35

Ⅱ巴彦浩特1561.40.400.600.700.150.200.25

Ⅱ西乌珠穆沁旗995.90.450.550.600.300.400.45

Ⅰ扎鲁特鲁北265.00.400.550.600.200.300.35

Ⅱ巴林左旗林东484.40.400.550.600.200.300.35

Ⅱ锡林浩特市989.50.400.550.600.250.400.45

Ⅰ林西799.00.450.600.700.250.400.45

Ⅰ开鲁241.00.400.550.600.200.300.35

Ⅱ通辽市178.50.400.550.600.200.300.35

Ⅱ多伦1245.40.400.550.600.200.300.35

Ⅰ翁牛特旗乌丹631.80.200.300.35

Ⅱ赤峰市571.10.300.550.650.200.300.35

Ⅱ敖汉旗宝国图400.50.400.500.550.250.400.45

Ⅱ辽宁沈阳市42.80.400.550.600.300.500.55

Ⅰ彰武79.40.350.450.500.200.300.35

Ⅱ阜新市144.00.400.600.700.250.400.45

Ⅱ开原98.20.300.450.500.300.400.45

Ⅰ清原234.10.250.400.450.350.500.60

Ⅰ朝阳市169.20.400.550.600.300.450.55

Ⅱ建平县叶柏寿421.70.300.350.400.250.350.40

Ⅱ黑山37.50.450.650.750.300.450.50

Ⅱ锦州市65.90.400.600.700.300.400.45

Ⅱ鞍山市77.30.300.500.600.300.400.45

Ⅱ本溪市185.20.350.450.500.400.550.60

Ⅰ抚顺市章党118.50.300.450.500.350.450.50

Ⅰ桓仁240.30.250.300.350.350.500.55

Ⅰ绥中15.30.250.400.450.250.350.40

Ⅱ兴城市8.80.350.450.500.200.300.35

Ⅱ营口市3.30.400.600.700.300.400.45

Ⅱ盖县熊草河口20.40.300.400.450.250.400.45

Ⅱ本溪县草河口233.40.250.450.550.350.550.60

Ⅰ岫岩79.30.300.450.500.350.500.55

Ⅱ宽甸260.10.300.500.600.400.600.70

丹东市15.10.350.550.650.300.400.45

Ⅱ瓦房店市29.30.350.500.550.200.300.35

Ⅱ新金县皮口43.20.350.500.550.250.300.35

Ⅱ庄河34.80.350.500.550.250.350.40

Ⅱ大连市91.50.400.650.750.250.400.45

Ⅱ吉林长春市236.80.450.650.750.250.350.40

Ⅰ白城市155.40.450.650.750.150.200.25

Ⅱ乾安146.30.350.450.500.150.200.25

Ⅱ前郭尔罗斯134.70.300.450.500.150.250.30

Ⅱ通榆149.50.350.500.550.150.200.25

Ⅱ长岭189.30.300.450.500.150.200.25

Ⅱ扶余市三岔河196.60.350.550.650.200.300.35

Ⅰ双辽114.90.350.500.550.200.300.35

Ⅰ四平市164.20.400.550.600.200.350.40

Ⅰ磐石县烟筒山271.60.300.400.450.250.400.45

Ⅰ吉林市183.40.400.500.550.300.450.50

Ⅰ晈河295.00.300.450.500.400.650.75

Ⅰ敦化市523.70.300.450.500.300.500.60

Ⅰ梅河口市339.90.300.400.450.300.450.50

Ⅰ桦甸263.80.300.400.450.400.650.75

Ⅰ靖宇549.20.250.350.400.400.650.70

Ⅰ抚松县东岗774.20.300.400.450.600.901.05

Ⅰ延吉市176.80.350.500.550.350.550.65

Ⅰ通化市402.90.300.500.600.500.800.90

Ⅰ浑江市临江332.70.200.300.350.450.700.80

Ⅰ集安市177.70.200.300.350.450.700.80

Ⅰ长白1016.70.350.450.500.400.600.70

黑龙江哈尔滨市142.30.350.550.650.300.450.50

Ⅰ漠河296.00.250.350.400.500.650.70

Ⅰ塔河296.00.250.350.400.500.650.70

Ⅰ新林494.60.250.350.400.400.500.55

Ⅰ呼玛177.40.300.500.600.350.450.50

Ⅰ加格达奇371.70.250.350.400.400.550.60

Ⅰ黑河市166.40.350.500.550.450.600.65

Ⅰ嫩江242.20.400.550.600.400.550.60

Ⅰ孙吴234.50.400.600.700.400.550.60

Ⅰ北安市269.70.300.500.600.400.550.60

Ⅰ克山234.60.300.450.500.300.500.55

Ⅰ富裕162.40.300.400.450.250.350.40

Ⅰ齐齐哈尔145.90.350.450.500.250.400.45

Ⅰ海伦239.20.350.550.650.300.400.45

Ⅰ明水249.20.350.450.500.250.400.45

Ⅰ伊春市240.90.250.350.400.450.600.65

Ⅰ鹤岗市227.90.300.400.450.450.650.70

Ⅰ富锦64.20.300.450.500.350.450.50

Ⅰ泰来149.50.300.450.500.200.300.35

Ⅰ绥化市179.60.350.550.650.350.500.60

Ⅰ安达市149.30.350.550.650.200.300.35

Ⅰ铁力210.50.250.350.400.500.750.85

Ⅰ佳木斯市81.20.400.650.750.450.650.70

Ⅰ依兰100.10.450.650.75

Ⅰ宝清83.00.300.400.450.350.500.55

Ⅰ通河108.60.350.500.550.500.750.85

Ⅰ尚志189.70.350.550.600.400.550.60

Ⅰ鸡西市233.60.400.550.650.450.650.75

Ⅰ虎林100.20.350.450.500.500.700.80

Ⅰ牡丹江市241.40.350.500.550.400.600.65

Ⅰ绥芬河市496.70.400.600.700.400.550.60

山东济南市51.60.300.450.500.200.300.35

Ⅱ德州市21.20.300.450.500.200.350.40

Ⅱ惠民11.30.400.500.550.250.350.40

Ⅱ寿光县羊角沟4.40.300.450.500.150.250.30

Ⅱ龙口市4.80.450.600.650.250.350.40

Ⅱ烟台市46.70.400.550.600.300.400.45

Ⅱ威海市46.60.450.650.750.300.450.50

Ⅱ荣成市成山头47.70.600.700.750.250.400.45

Ⅱ莘县朝城42.70.350.450.500.250.350.40

Ⅱ泰安市泰山1533.70.650.850.950.400.550.60

Ⅱ泰安市128.80.300.400.450.200.350.40

Ⅱ淄博市张店34.00.300.400.450.300.450.50

Ⅱ沂源304.50.300.350.400.200.300.35

Ⅱ潍坊市44.10.300.400.450.250.350.40

Ⅱ莱阳市30.50.300.400.450.150.250.30

Ⅱ青岛市76.00.450.600.700.150.200.25

Ⅱ海阳65.20.400.550.600.100.150.15

Ⅱ荣城市石岛33.70.400.550.650.100.150.15

Ⅱ菏泽市49.70.250.400.450.200.300.35

Ⅱ兖州51.70.250.400.450.250.350.45

Ⅱ临沂87.90.300.400.450.250.400.45

Ⅱ日照市16.10.300.400.45

Ⅱ莒县107.40.250.350.400.200.350.40

江苏南京市8.90.250.400.450.400.650.75

Ⅱ徐州市41.00.250.350.400.250.350.40

Ⅱ赣榆2.10.300.450.500.250.350.40

Ⅱ盱眙34.50.250.350.400.200.300.35

Ⅱ淮阳市17.50.250.400.450.250.400.45

Ⅱ射阳2.00.300.400.450.150.200.25

Ⅲ镇江26.50.300.400.450.250.350.40

Ⅲ无锡6.70.300.450.500.300.400.45

Ⅲ泰州6.60.250.400.450.250.350.40

Ⅲ连云港3.70.350.550.650.250.400.45

Ⅱ盐城3.60.250.450.550.200.350.40

Ⅲ高邮5.40.250.400.450.200.300.40

Ⅲ东台市4.30.300.400.450.200.300.35

Ⅲ南通市5.30.300.450.500.150.250.30

Ⅲ启东县吕泗5.50.350.500.550.100.200.25

Ⅲ常州市5.30.300.450.500.150.250.30

Ⅲ溧阳7.20.250.400.450