問(wèn)答題某橋頭變坡點(diǎn)處樁號(hào)為K4十950,設(shè)計(jì)標(biāo)高為120.78m,i1= 3.5%,橋上為平坡,橋頭端點(diǎn)的樁號(hào)為K5十043,要求豎曲線(xiàn)不上橋.并保證有15m的直坡段,試問(wèn)豎曲線(xiàn)半徑選在什么范圍內(nèi)?試設(shè)計(jì)一豎曲線(xiàn)半徑,計(jì)算豎曲線(xiàn)要素,并計(jì)算K5+030處設(shè)計(jì)標(biāo)高.

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