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一、前言《公路桥涵设计通用规范》(JTJ021—85)规定:设计风速 V(m/s),系指平坦开旷地面,离地面20m 高,频率1/100的10min 平均最大风速确定。解放前全国为数不多的气象台(站),大多采用维尔达风压板观测风速,个别气象台(站)则用九灯风速仪观测风速。解放后,多数气象台(站)大多一直沿用维尔达风压板或
I. INTRODUCTION The “Code for Design of Highway Bridges and Culverts” (JTJ021-85) stipulates that the design wind speed V (m / s) means the average maximum wind speed of 10min on a flat and open ground, 20m above the ground and a frequency of 1/100. Before the liberation of the country’s few meteorological stations (stations), mostly using Verda wind plate observation wind speed, individual meteorological stations (stations) with nine light anemometer wind speed observation. After the liberation, the majority of meteorological stations (stations) have been using the Veere wind pressure plate or