公(gong)路墩為(wei)空心薄壁(bi)墩:墩身混(hun)凝土(tu)施(shi)工可采用滑(hua)模(mo)或翻模(mo)施(shi)工,施(shi)工注(zhu)意新(xin)老混(hun)凝土(tu)結合面的清洗和鑿毛(mao),

為(wei)使全橋顏(yan)色一致,宜(yi)選用同(tong)一種水泥(ni).在(zai)進(jin)行(xing)墩身(shen)施工時應注意安(an)裝(zhuang)主梁零號塊托架的預(yu)埋構件.主墩身(shen)第(di)一

次澆注(zhu)時應至(zhi)少澆筑(zhu)2米高度(du)的空心(xin)墩柱,即主墩第一(yi)節高度(du)至(zhi)少應達到4.5米,以減少剛度(du)突變帶(dai)來的混凝(ning)土(tu)

收縮裂縫(feng).墩(dun)(dun)身垂直度允許偏差不(bu)得(de)大于1/1000,且墩(dun)(dun)身各斷(duan)面中心位置(zhi)(zhi)與設計位置(zhi)(zhi)偏差不(bu)得(de)大于2厘(li)米.墩(dun)(dun)身表面需安裝貼面冷軋(ya)帶肋(lei)鋼筋焊網,網片之間的接(jie)長采(cai)用(yong)插接(jie),插接(jie)長杜(du)不(bu)小于20厘(li)米.墩(dun)(dun)身和承臺之間的混凝土(tu)澆注齡期差不(bu)得(de)大于20天.墩(dun)(dun)身均未(wei)設置(zhi)(zhi)爬(pa)梯(ti)和通(tong)風孔(kong),施工單位可(ke)(ke)根(gen)據需要進行設置(zhi)(zhi),但不(bu)可(ke)(ke)截斷(duan)原有(you)結構鋼筋.

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