关键词: 高速公路, 强横风区间, 安全行车对策, 新疆

Abstract: In order to improve driving safety and efficiency of different types of cars on expressway in violent wind weather conditions, a combined method was used of meteorology, fluid mechanics, wind monitoring technology, road engineering, aerodynamics and probability theory to carry out informatization and standardization integration，based on the recent 50 years (1961-2010) violentwind days materials of more than 100 weather stations along Xinjiang “five vertical and seven horizontal” expressways and highgrade highways, choosing 50 years(1961-2010) average maximal wind speed and wind direction, maximal instantaneous wind speed and wind direction for 10 minutes violentwind materials of 50 weather stations with their own record, 1 year monitoring data of seven“six elements”（temperature,humidity,wind direction,wind speed,precipitation,air pressure）and fivelayer （0.15 m,0.5 m,2.0 m,3.0 m,4.0 m）gradient wind of more than seven elements, 10 wind tower gradient and recent 10 years(2001 - 2010) monitoring data of 30 winds stations. On base of abundant and detailed materials, applying the meteorological model and the extremum Ⅰprobability model to calculate the different probability design values of 10 min average maximal wind speed in 1 km×1 km space gridding points along highway; through combining strong wind coefficient[WTBX] K[WTBZ]1, of spatial distribution and highway, embankment height and bridge height speedup coefficient [WTBX]K[WTBZ]2 and power exponent [WTBX]K[WTBZ]3 under different underlying surface features, set up a forecast model of different probability design values of maximal instantaneous wind speed in any 100 m×100 m space gridding points with 4m height from the ground; through a strongwind rose diagram, determine the horizontal wind guard region along the highway. Its innovative point lies in that it can predict any maximal instantaneous wind speed beyond the wind monitoring points along the highway(a region without anemometer).The integrated data is combined with topography, roughness, embankment height, bridge height and other parameters of different expressway sections, establishing maximum wind speed spatial distribution, vertical distribution and horizontal distribution along the expressway. Based on above work, this paper used threelevel regionalization index system and equalprobability partition theory to divide the wind damage zone along the expressway into 5 major areas, Ⅰmajor high risk area, Ⅱmajor strong risk area, III major risk area , Ⅳ risk area, Ⅴ low risk area. Based on above work, this paper made safe driving protection measures at Xinjiang Expressway Violentwind Sections composed of earlywarning monitoring technology and wind fence protection technology. And wind damage equal partition limiting value (threshold) from earlywarning driving monitoring technology is verified with onsite violentwind monitoring result. When instantaneous wind speed ＜12.0 m/s, different types of vehicles can run normally; 12.0 ≤ instantaneous wind speed 25.0 m/s, buses and trucks outage. It puts forward that measures for protecting safe driving in the horizontal region of highway consist of wind disaster prevention and control information management technology and windproof bar protection technology. It institutes wind disaster prevention and control management technology rule and pre-warn standard under the strongwind weather in Xinjiang Highway in order to provide reasonable driving speed limit instruction. It uses the form of different levels of probability risks to reflect the discipline of the maximal instantaneous wind speed in the highway; and it covers maximal risks in recent 50 years. It provides theoretical support for safe driving of vehicles in highway and highway disaster prevention and control technology.

Key words: expressway, violent, wind section, safe driving measures, Xinjiang