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鍍(du)鋅(xin)(xin)(xin)(xin)(xin)帶(dai)鋼(gang)的鋅(xin)(xin)(xin)(xin)(xin)層(ceng)(ceng)特(te)性 電鍍(du)鋅(xin)(xin)(xin)(xin)(xin)層(ceng)(ceng)是不(bu)能形成(cheng)鋅(xin)(xin)(xin)(xin)(xin)花(hua)(hua)的,熱鍍(du)鋅(xin)(xin)(xin)(xin)(xin)層(ceng)(ceng)則有鋅(xin)(xin)(xin)(xin)(xin)花(hua)(hua),其形成(cheng)過程如(ru)下(xia):當鍍(du)鋅(xin)(xin)(xin)(xin)(xin)帶(dai)從(cong)鋅(xin)(xin)(xin)(xin)(xin)鍋(guo)出來后,經(jing)(jing)氣刀的噴吹,大量(liang)鋅(xin)(xin)(xin)(xin)(xin)液(ye)被吹回(hui)鋅(xin)(xin)(xin)(xin)(xin)鍋(guo),這時帶(dai)鋼(gang)表(biao)面還有純鋅(xin)(xin)(xin)(xin)(xin)層(ceng)(ceng),呈液(ye) 態附在鋼(gang)板表(biao)面,在鋼(gang)板表(biao)面形成(cheng)大量(liang)結晶(jing)核(he),隨著(zhu)鋼(gang)板上升(sheng)冷(leng)卻(que)(que),使結晶(jing)核(he)慢(man)慢(man)長成(cheng)鋅(xin)(xin)(xin)(xin)(xin)花(hua)(hua)。冷(leng)卻(que)(que)速度越快鋅(xin)(xin)(xin)(xin)(xin)花(hua)(hua)越小,冷(leng)卻(que)(que)速度越慢(man)鋅(xin)(xin)(xin)(xin)(xin)花(hua)(hua)越大。熱鍍(du)鋅(xin)(xin)(xin)(xin)(xin)帶(dai)鋼(gang)在我國市場(chang)一直是緊缺品種。從(cong)20世紀90年代中期(qi)以來,每(mei)年都要從(cong)國外(wai)進口80-100萬t左(zuo)右(you)。隨著(zhu)國內經(jing)(jing)濟的發展,尤其是汽車(che)、家電及建筑業(ye)的發展,對鍍(du)鋅(xin)(xin)(xin)(xin)(xin)帶(dai)鋼(gang)的需求量(liang)也大大增加。
冷軋卷廠家樓承板的使用是需要安裝的,那么如果要安裝就要選擇合適的小配件,焊后栓釘高度大于壓型鋼板波高30MM(留意挑選樓板的類型);栓釘頂面混凝土保護層不小于15MM(留意樓板總厚度)直徑不宜大于19MM。璧山攀鋼冷軋卷樓(lou)承板栓(shuan)釘類型(xing)有ф8、ф10、ф13、ф16、ф19、ф22、ф25,栓(shuan)釘一般在(zai)鋼(gang)結構(gou)修建中,遍及使用(yong)在(zai)柱(zhu)(zhu)腳和樓(lou)板中,一般剛度要求高的柱(zhu)(zhu)腳都選用(yong)鋼(gang)柱(zhu)(zhu)內(nei)伸至(zhi)混(hun)凝(ning)(ning)土(tu)中,鋼(gang)柱(zhu)(zhu)埋(mai)入混(hun)凝(ning)(ning)土(tu)的部位(wei)四(si)周(zhou)均布栓(shuan)釘。樓(lou)承板輕(qing)鋼(gang)結構(gou)常(chang)用(yong)厚(hou)度為0.8mm,1.0mm,1.2mm,荷載較大的情況下會用(yong)到1.5mm。一般需要用(yong)栓(shuan)釘與鋼(gang)梁(liang)銜接,板中配少量(liang)鋼(gang)筋(jin),上面澆混(hun)凝(ning)(ning)土(tu)層,總厚(hou)度約在(zai)100-200mm之間。
樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)鋼(gang)(gang)(gang)筋桁(heng)架(jia)是(shi)將(jiang)樓(lou)(lou)板(ban)(ban)(ban)(ban)中(zhong)的(de)鋼(gang)(gang)(gang)筋在(zai)工廠(chang)采用進(jin)口設(she)備加工成(cheng)鋼(gang)(gang)(gang)筋桁(heng)架(jia),并(bing)將(jiang)鋼(gang)(gang)(gang)筋桁(heng)架(jia)與鍍鋅鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)在(zai)工廠(chang)焊(han)接(jie)成(cheng)一(yi)體的(de)組合模(mo)板(ban)(ban)(ban)(ban),使其在(zai)施工階段可(ke)作為(wei)鋼(gang)(gang)(gang)梁(liang)的(de)側向支(zhi)撐使用!樓(lou)(lou)板(ban)(ban)(ban)(ban)連(lian)接(jie)采用扣合方(fang)式,板(ban)(ban)(ban)(ban)與板(ban)(ban)(ban)(ban)之間(jian)的(de)拉鉤連(lian)接(jie)應(ying)緊密,保(bao)證(zheng)澆筑(zhu)(zhu)混(hun)凝土時不漏漿,同(tong)時注(zhu)意(yi)(yi)排(pai)板(ban)(ban)(ban)(ban)方(fang)向要(yao)(yao)(yao)一(yi)致,桁(heng)架(jia)節點間(jian)距為(wei)200㎜,注(zhu)意(yi)(yi)不同(tong)模(mo)板(ban)(ban)(ban)(ban)的(de)橫向節點要(yao)(yao)(yao)對(dui)齊。我們仔細(xi)觀察的(de)話會(hui)發現(xian)很(hen)多(duo)高層建筑(zhu)(zhu)上都會(hui)設(she)置鋼(gang)(gang)(gang)筋桁(heng)架(jia)樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban),我們雖然經常用到該(gai)樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban),但很(hen)少有(you)人知(zhi)道這(zhe)種板(ban)(ban)(ban)(ban)材(cai)為(wei)什么(me)會(hui)用于高層建筑(zhu)(zhu)中(zhong)。下(xia)面小(xiao)編將(jiang)為(wei)您介紹(shao)一(yi)下(xia)該(gai)板(ban)(ban)(ban)(ban)材(cai)在(zai)高層建筑(zhu)(zhu)中(zhong)的(de)使用優勢!鋼(gang)(gang)(gang)筋樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)的(de)搭接(jie)是(shi)有(you)著(zhu)嚴(yan)格的(de)施工要(yao)(yao)(yao)求(qiu)的(de),為(wei)保(bao)障樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)安裝(zhuang)牢固(gu),該(gai)板(ban)(ban)(ban)(ban)材(cai)的(de)搭接(jie)需要(yao)(yao)(yao)按照(zhao)說明書正確進(jin)行,搭接(jie)過程中(zhong)還需要(yao)(yao)(yao)注(zhu)意(yi)(yi),沿(yan)順(shun)(shun)肋方(fang)向,壓型鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)如果可(ke)以滿(man)足正截(jie)面承(cheng)(cheng)載力(li)(li)及剪切粘結承(cheng)(cheng)載力(li)(li)的(de)要(yao)(yao)(yao)求(qiu),可(ke)以不用配順(shun)(shun)肋方(fang)向的(de)鋼(gang)(gang)(gang)筋,這(zhe)時候(hou)要(yao)(yao)(yao)注(zhu)意(yi)(yi)計算剪切粘結承(cheng)(cheng)載力(li)(li)。
我國(guo)建筑(zhu)(zhu)業中,噪聲污染問題久為(wei)人們(men)所詬病。輕(qing)型樓(lou)承(cheng)(cheng)板(ban)(ban)的(de)應用(yong)(yong)(yong)使得土建建筑(zhu)(zhu)物局面(mian)被(bei)打破(po),集環境破(po)壞及污染少、材(cai)料(liao)回收和(he)(he)利用(yong)(yong)(yong)率高、符合(he)可持續發(fa)(fa)展要求等眾多優點于一(yi)身的(de)樓(lou)承(cheng)(cheng)板(ban)(ban)建筑(zhu)(zhu)應運(yun)而(er)生,逐步(bu)被(bei)人們(men)所接受。輕(qing)型樓(lou)承(cheng)(cheng)板(ban)(ban)是(shi)近十年來發(fa)(fa)展較快的(de)領域,在(zai)采用(yong)(yong)(yong)輕(qing)型樓(lou)承(cheng)(cheng)板(ban)(ban)占非住宅建筑(zhu)(zhu)投資的(de)50%以(yi)上。這種結(jie)構(gou)工業化、商品(pin)化程度高,施工快,綜合(he)效益高,市(shi)場需求量很(hen)大,已引起(qi)結(jie)構(gou)設計(ji)人員認識。樓(lou)承(cheng)(cheng)板(ban)(ban)的(de)研究開(kai)發(fa)(fa)已在(zai)各地試點,是(shi)輕(qing)鋼(gang)發(fa)(fa)展的(de)一(yi)個重要方(fang)向,目前已經有(you)多種的(de)低層(ceng)(ceng)、多層(ceng)(ceng)和(he)(he)高層(ceng)(ceng)的(de)設計(ji)方(fang)案和(he)(he)實例(li)。