【摘要】：我國冷卻塔規(guī)范風(fēng)荷載條款仍源自20世紀(jì)80年代原型冷卻塔(約90m高)實(shí)測資料,且僅規(guī)定了塔筒表面靜態(tài)風(fēng)壓分布。事實(shí)上,超大型冷卻塔(高度≥165m)風(fēng)振問題與風(fēng)荷載脈動(dòng)作用關(guān)系更加密切,由此導(dǎo)致了冷卻塔數(shù)學(xué)和物理試驗(yàn)?zāi)Ｐ屠字Z數(shù)效應(yīng)模擬準(zhǔn)則的不完整性,難于準(zhǔn)確再現(xiàn)冷卻塔表面動(dòng)態(tài)風(fēng)荷載與來流條件、塔群組合狀況等參數(shù)間的合理關(guān)系,已成為制約大型冷卻塔抗風(fēng)性能研究和結(jié)構(gòu)設(shè)計(jì)的瓶頸。為此,采用全天候動(dòng)態(tài)風(fēng)壓采集設(shè)備,對(duì)某電廠冷卻塔(約166m高)進(jìn)行通風(fēng)筒表面動(dòng)、靜態(tài)風(fēng)壓長期現(xiàn)場觀測,量化表面脈動(dòng)壓力與來流紊流度之間的影響關(guān)系,提出具有原創(chuàng)性的冷卻塔超高雷諾數(shù)條件(Re≥6E7)脈動(dòng)風(fēng)壓雷諾數(shù)效應(yīng)模擬準(zhǔn)則。
[Abstract]:The terms of wind load of cooling tower code in China are still derived from the measured data of prototype cooling tower (about 90 m high) in 1980s, and only the static wind pressure distribution on the surface of tower tube is specified. In fact, the wind vibration problem of super large cooling tower (height 鈮，

本文編號(hào)：2269002