樓(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)適應主體(ti)鋼結構(gou)快速施工的(de)(de)(de)(de)要(yao)求，能夠在短時間內提供堅定的(de)(de)(de)(de)作業平臺，并可(ke)(ke)采用(yong)多個樓(lou)(lou)(lou)層(ceng)鋪設壓(ya)型鋼板(ban)(ban)(ban)，分層(ceng)澆筑混(hun)凝(ning)(ning)土(tu)(tu)板(ban)(ban)(ban)的(de)(de)(de)(de)流水施工。在使用(yong)階段樓(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)作為混(hun)凝(ning)(ning)土(tu)(tu)樓(lou)(lou)(lou)板(ban)(ban)(ban)的(de)(de)(de)(de)受拉鋼筋(jin)，也提高(gao)了(le)樓(lou)(lou)(lou)板(ban)(ban)(ban)的(de)(de)(de)(de)剛(gang)度，節省(sheng)了(le)鋼筋(jin)和(he)混(hun)凝(ning)(ning)土(tu)(tu)的(de)(de)(de)(de)用(yong)量。樓(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)上面可(ke)(ke)以鋪設保溫，隔(ge)音，隔(ge)熱，隔(ge)振等材料(liao)。樓(lou)(lou)(lou)面性(xing)能充分發揮(hui)鋼的(de)(de)(de)(de)良(liang)好的(de)(de)(de)(de)抗(kang)拉強(qiang)度和(he)延性(xing)及混(hun)凝(ning)(ning)土(tu)(tu)優良(liang)的(de)(de)(de)(de)抗(kang)壓(ya)強(qiang)度和(he)較(jiao)大的(de)(de)(de)(de)剛(gang)度。壓(ya)型板(ban)(ban)(ban)表面壓(ya)紋使樓(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)與混(hun)凝(ning)(ning)土(tu)(tu)之間產(chan)生大的(de)(de)(de)(de)結合力，使二(er)者形成整體(ti)，配(pei)以加勁(jing)肋，使樓(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)系統具有(you)高(gao)強(qiang)承(cheng)(cheng)(cheng)載力。在懸(xuan)臂條件下，樓(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)僅(jin)作為性(xing)模板(ban)(ban)(ban)。懸(xuan)挑(tiao)的(de)(de)(de)(de)長度可(ke)(ke)根據樓(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)的(de)(de)(de)(de)截面特性(xing)來定。為了(le)防(fang)止懸(xuan)挑(tiao)板(ban)(ban)(ban)的(de)(de)(de)(de)開裂(lie)，需在支(zhi)座(zuo)處依結構(gou)工程(cheng)師的(de)(de)(de)(de)設計配(pei)上負筋(jin)。

合川鍍鋅角鋼重慶樓承板的鍍鋅量沒有一個具體的標準，制作壓型鋼板的冷軋鋼卷須連續熱浸鍍鋅（或鍍鋁鋅），鍍（鋁）鋅量視設計要求而定。鍍鋅角鋼批發樓承板(ban)(ban)(ban)用(yong)壓(ya)(ya)型(xing)鋼(gang)(gang)板(ban)(ban)(ban)宜選擇熱浸(jin)鍍(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)。不允許使用(yong)電(dian)(dian)鍍(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)，電(dian)(dian)鍍(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)僅在基(ji)材表面(mian)形成(cheng)保護(hu)層，防(fang)腐能力有限。目(mu)前市(shi)場上有鍍(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)（鍍(du)層含鋁5%或55%），在酸性環境下的(de)防(fang)腐效果由于(yu)熱浸(jin)鍍(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)，但在混凝(ning)土(tu)的(de)堿性條件下，鍍(du)鋁鋅(xin)的(de)防(fang)腐蝕性能低于(yu)熱浸(jin)鍍(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)，且鋁會和混凝(ning)土(tu)發生反應，并降(jiang)低混凝(ning)土(tu)與鋼(gang)(gang)板(ban)(ban)(ban)的(de)粘結(jie)性能。因(yin)此參考國外規范，及國內外工程，行家壓(ya)(ya)型(xing)鋼(gang)(gang)板(ban)(ban)(ban)不建議使用(yong)鍍(du)鋁鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)。

重慶樓承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)分(fen)兩種。一(yi)(yi)(yi)種是把樓承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)當做承(cheng)(cheng)(cheng)(cheng)受(shou)拉力(li)的(de)(de)(de)鋼筋(jin)計算的(de)(de)(de)，另(ling)外一(yi)(yi)(yi)種是僅(jin)把樓承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)作為模板(ban)(ban)(ban)(ban)計算而不(bu)(bu)參與受(shou)力(li)的(de)(de)(de)。做模板(ban)(ban)(ban)(ban)計算的(de)(de)(de)比較簡單(dan)，直(zhi)接按照(zhao)(zhao)跨度(du)頂就(jiu)行了。2米(mi)以(yi)下選0.8的(de)(de)(de)，2-3米(mi)的(de)(de)(de)選1.0的(de)(de)(de)。樓承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)作為受(shou)力(li)鋼筋(jin)計算，就(jiu)按照(zhao)(zhao)模板(ban)(ban)(ban)(ban)的(de)(de)(de)選用樓承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)（或者加(jia)厚且(qie)只能加(jia)厚），然(ran)后在(zai)計算配筋(jin)的(de)(de)(de)時(shi)候可以(yi)按照(zhao)(zhao)面積減少鋼筋(jin)用量。樓承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)不(bu)(bu)能單(dan)獨計算的(de)(de)(de)，它和整個(ge)樓板(ban)(ban)(ban)(ban)是一(yi)(yi)(yi)個(ge)體系的(de)(de)(de)。

熱鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)和電(dian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)在鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)量上(shang)有很大(da)的(de)差別，就像(xiang)山東(dong)彩涂卷）。熱鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)的(de)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)量不可(ke)能太小(xiao)，一(yi)般(ban)(ban)較(jiao)(jiao)小(xiao)為(wei)雙面50～60g／m2，較(jiao)(jiao)大(da)可(ke)達600g／m2。電(dian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)的(de)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)層(ceng)可(ke)以很薄，較(jiao)(jiao)小(xiao)達15g／m2，但(dan)要求鍍(du)(du)(du)(du)層(ceng)較(jiao)(jiao)厚的(de)話(hua)則生(sheng)產線(xian)速度很慢，不適應現代化(hua)機組的(de)工藝(yi)特(te)點(dian)，一(yi)般(ban)(ban)較(jiao)(jiao)大(da)為(wei)lO0g／m2左右(you)。正因為(wei)如此，電(dian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)的(de)生(sheng)產受(shou)到(dao)很大(da)的(de)限制。工一(yi)般(ban)(ban)電(dian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)比較(jiao)(jiao)多(duo)，適用(yong)于小(xiao)部件(jian)；熱鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)一(yi)般(ban)(ban)用(yong)于電(dian)力設備和構件(jian)，適用(yong)于大(da)的(de)部件(jian)和設備。當然他們的(de)價格(ge)也相對便(bian)宜一(yi)些。建設部已正式(shi)下文，淘汰技術落后的(de)冷(leng)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)管(guan)，不準用(yong)冷(leng)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)管(guan)作水(shui)、煤氣管(guan)。

由于我(wo)國鋅資(zi)源比較(jiao)豐富，鍍(du)鋅又是一種價廉(lian)、能防銹，又能裝飾的高性價比鍍(du)種，因而在(zai)汽(qi)車、機(ji)械(xie)、電(dian)子(zi)、船(chuan)舶(bo)、儀表、輕工(gong)(gong)(gong)等(deng)工(gong)(gong)(gong)業部門得到廣(guang)泛的應用。如機(ji)械(xie)零件、低(di)壓電(dian)器、高壓開關、緊(jin)固連接件、鋼鐵結構件、建筑(zhu)五金(jin)、農業機(ji)械(xie)、輕工(gong)(gong)(gong)產品(pin)等(deng)都(dou)離(li)不開鍍(du)鋅鈍化制(zhi)品(pin)。鍍(du)鋅板(ban)卷因此可分為(wei)熱軋鍍(du)鋅板(ban)卷和冷(leng)軋熱鍍(du)鋅板(ban)卷，它們主(zhu)要用于建筑(zhu)、家電(dian)、汽(qi)車、容器、交通(tong)及家業等(deng)領域。特(te)別是鋼結構建筑(zhu)、汽(qi)車制(zhi)造、鋼板(ban)倉制(zhi)造等(deng)行業。 重慶鍍(du)鋅卷特(te)點主(zhu)要為(wei)：耐腐蝕(shi)強、表面(mian)質(zhi)量好、得利于深(shen)加工(gong)(gong)(gong)、經濟(ji)實用等(deng)。

首(shou)先，在(zai)鋼結(jie)構(gou)樓(lou)層板(ban)(ban)(ban)(ban)(ban)中要(yao)達到(dao)耐火(huo)1.5小時(shi)，總(zong)的(de)來說可以選擇開口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)、縮口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)、閉(bi)(bi)口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)三(san)大類(lei)。規范上(shang)混凝土要(yao)高于開口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)肋頂之上(shang)80mm，并且板(ban)(ban)(ban)(ban)(ban)底需配(pei)置板(ban)(ban)(ban)(ban)(ban)底受(shou)力筋。還(huan)有(you)一種就是再開口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)底部刷(shua)防火(huo)涂料，涂料厚(hou)度(du)大于等于15,這(zhe)樣的(de)話，只(zhi)要(yao)達到(dao)構(gou)造要(yao)求高于肋頂5公分就可以了(le)。而縮口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)和(he)閉(bi)(bi)口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)，只(zhi)需要(yao)總(zong)的(de)樓(lou)板(ban)(ban)(ban)(ban)(ban)厚(hou)度(du)大于等于110即可，但是縮口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)雖然在(zai)防火(huo)方面比開口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)要(yao)好。但是底部還(huan)是需要(yao)加板(ban)(ban)(ban)(ban)(ban)底受(shou)力筋，而閉(bi)(bi)口(kou)(kou)板(ban)(ban)(ban)(ban)(ban)則不需要(yao)。