拆模一般分二次拆模。待砼強度達到10Mpa方可拆除模殼。砼強度達到設計強度的70%時,方可拆除支柱,但大跨主梁必須達到設計強度的100%。拆除方法是用1根φ14、長50cm的小橇棒橇動內部的角鋼框(不能直接撬模殼)即可下落,建筑模殼可周轉使用,拆除主龍骨與支撐系統。
柱(zhu)(zhu)頂(ding)構造分為有柱(zhu)(zhu)帽和無(wu)(wu)柱(zhu)(zhu)帽兩種(zhong)。當(dang)樓(lou)(lou)面(mian)(mian)荷載(zai)(zai)較(jiao)小(xiao)(xiao)時,采(cai)用無(wu)(wu)柱(zhu)(zhu)帽的(de)(de)(de)(de)形式;當(dang)樓(lou)(lou)面(mian)(mian)荷載(zai)(zai)較(jiao)大(da)(da)時,為提(ti)高(gao)板(ban)(ban)(ban)的(de)(de)(de)(de)承(cheng)載(zai)(zai)能力、剛度(du)和抗沖切能力,可(ke)以在柱(zhu)(zhu)頂(ding)設(she)置(zhi)柱(zhu)(zhu)帽和托(tuo)板(ban)(ban)(ban)來減小(xiao)(xiao)板(ban)(ban)(ban)跨、增加柱(zhu)(zhu)對板(ban)(ban)(ban)的(de)(de)(de)(de)支托(tuo)面(mian)(mian)積(ji)。無(wu)(wu)梁(liang)樓(lou)(lou)板(ban)(ban)(ban)的(de)(de)(de)(de)柱(zhu)(zhu)間距宜為6m,成(cheng)方形布置(zhi)。由于(yu)板(ban)(ban)(ban)的(de)(de)(de)(de)跨度(du)較(jiao)大(da)(da),故(gu)板(ban)(ban)(ban)厚不宜小(xiao)(xiao)于(yu)150mm,一般為160~200mm。無(wu)(wu)梁(liang)樓(lou)(lou)板(ban)(ban)(ban)的(de)(de)(de)(de)板(ban)(ban)(ban)底平整,室(shi)內凈空高(gao)度(du)大(da)(da),采(cai)光(guang)、通風條(tiao)件(jian)好,便于(yu)采(cai)用工(gong)業化的(de)(de)(de)(de)施工(gong)方式,適用于(yu)樓(lou)(lou)面(mian)(mian)荷載(zai)(zai)較(jiao)大(da)(da)的(de)(de)(de)(de)公(gong)共建筑(如商(shang)店、倉庫、展(zhan)覽館等(deng))和多層工(gong)業廠房(fang)。
