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盤扣腳手架租賃是重要的建筑施工周轉腳手架工具
盤扣腳手架是重(zhong)要的建筑施(shi)工工具
腳手架的(de)立(li)柱(zhu)(zhu)要求垂(chui)直(zhi),其(qi)(qi)中(zhong)轉角立(li)柱(zhu)(zhu)的(de)垂(chui)直(zhi)誤差不(bu)得超(chao)過0.5%,其(qi)(qi)中(zhong)立(li)柱(zhu)(zhu)不(bu)得超(chao)過1%,八(ba)層建筑(zhu)的(de)外腳手架(jia)立(li)柱(zhu)(zhu)間(jian)(jian)距不(bu)得大于(yu)2米,縱向的(de)水平(ping)鋼管的(de)垂(chui)直(zhi)間(jian)(jian)距不(bu)大于(yu)1.8米,并要用構(gou)件聯結,擰緊螺栓,承(cheng)重的(de)縱向水平(ping)桿,必須支承(cheng)于(yu)橫桿之上,禁用不(bu)合格材料。
按腳手架(jia)上的連續(xu)長度在50米(mi)之內設置一個,并(bing)應(ying)滿足離接(jie)(jie)地(di)(di)極(ji)**遠點(dian)內腳手架(jia)上的過(guo)渡(du)電阻不超過(guo)10歐(ou)姆的要求。接(jie)(jie)地(di)(di)電阻不得超過(guo)20歐(ou)姆。接(jie)(jie)地(di)(di)極(ji)埋入地(di)(di)下的**高(gao)點(dian),并(bing)在地(di)(di)面下并(bing)不淺于(yu)50厘(li)米(mi),埋設時應(ying)將(jiang)新填土夯實。應(ying)用了用連接(jie)(jie)件與鋼(gang)管組(zu)成的鋼(gang)管支架(jia),并(bing)逐步(bu)完善發展(zhan)為扣件式鋼(gang)管支架(jia)。由于(yu)這種(zhong)支架(jia)具有加工簡便(bian)、拆裝靈活、搬運方便(bian)、通用性強等特點(dian),很快推廣應(ying)用到世(shi)界各國。
目(mu)前(qian)在許多國家已形成(cheng)各種形式的(de)扣(kou)件式鋼管支架(jia)(jia)(jia),并成(cheng)為當(dang)前(qian)應用(yong)**普遍的(de)模板支架(jia)(jia)(jia)之一(yi)。腳手(shou)架(jia)(jia)(jia)兩端(duan)轉角(jiao)處,每隔(ge)6-7根立(li)(li)柱(zhu),應設(she)剪(jian)刀撐,剪(jian)刀撐與(yu)地面的(de)夾角(jiao)不(bu)大于(yu)60度,建筑(zhu)物錨(mao)(mao)固(gu)點,橫向每隔(ge)4米(mi)設(she)一(yi)錨(mao)(mao)固(gu)點,必須與(yu)建筑(zhu)物錨(mao)(mao)固(gu)點拉結牢固(gu)。鋼管腳手(shou)架(jia)(jia)(jia)的(de)立(li)(li)柱(zhu),應置于(yu)堅實(shi)的(de)地基上,立(li)(li)柱(zhu)鋼管加(jia)墊(dian)座,用(yong)砼塊或用(yong)堅實(shi)的(de)厚(hou)木(mu)塊墊(dian)好(hao),(木(mu)墊(dian)不(bu)適宜高層建筑(zhu))宜加(jia)掃地桿牽系牢固(gu)。
蒸汽管道(dao)或煙囪風(feng)道(dao)附近經常受熱的(de)(de)(de)土(tu)層(ceng)內,位(wei)于(yu)地下水位(wei)以上(shang)的(de)(de)(de)磚石焦渣或砂子內,以及(ji)特(te)別干(gan)燥的(de)(de)(de)土(tu)層(ceng)內不(bu)得埋(mai)設(she)接地線。民用(yong)建筑(zhu)八(ba)層(ceng)以上(shang)(22.5米(mi)以上(shang))的(de)(de)(de)腳手架采用(yong)吊拉(la),安(an)全網隨(sui)著工作層(ceng)完成均要設(she)置(即滿拉(la)),水平網每隔四層(ceng)設(she)一道(dao),首層(ceng)必須按照通道(dao)長(chang)度(du)搭設(she)安(an)全網。門式(shi)腳手架作模(mo)板(ban)支(zhi)(zhi)撐(cheng)(cheng)時,架距和(he)間距應根據支(zhi)(zhi)撐(cheng)(cheng)高(gao)度(du)負(fu)載情況等條(tiao)件確定(ding)。架距為1.8米(mi)和(he)0.9米(mi)兩(liang)種。負(fu)載較大(da)時,移動腳手架采用(yong)0.9米(mi)架距的(de)(de)(de)模(mo)板(ban)支(zhi)(zhi)撐(cheng)(cheng)。
腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架樓(lou)板(ban)模板(ban)支撐(cheng)的(de)(de)(de)(de)間距(ju)由(you)荷載、施(shi)工(gong)(gong)條(tiao)件(jian)(jian)選擇(ze),一般不易大(da)(da)于1.2米。腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架是重要(yao)的(de)(de)(de)(de)建(jian)筑(zhu)施(shi)工(gong)(gong)工(gong)(gong)具。20世紀60年代以來,我國(guo)研究和(he)(he)開發(fa)了各種形(xing)式(shi)的(de)(de)(de)(de)腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架,其中(zhong)(zhong)扣件(jian)(jian)式(shi)鋼管(guan)腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架具有(you)加工(gong)(gong)簡(jian)便,搬運方(fang)便,通用(yong)(yong)性強等優點,已成為當前我國(guo)使(shi)用(yong)(yong)量**多(duo)、應用(yong)(yong)**普遍的(de)(de)(de)(de)一種腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架,占腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架使(shi)用(yong)(yong)總量的(de)(de)(de)(de)絕(jue)大(da)(da)部分(fen),在今(jin)后(hou)(hou)較長時間內,這種腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架仍(reng)將占主(zhu)導地位。但(dan)這種腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架的(de)(de)(de)(de)安全保證性較差,施(shi)工(gong)(gong)工(gong)(gong)效(xiao)低,**大(da)(da)搭設(she)高度規定(ding)為33m,不能滿足高層(ceng)建(jian)筑(zhu)施(shi)工(gong)(gong)需要(yao)。隨著中(zhong)(zhong)國(guo)建(jian)筑(zhu)市(shi)場(chang)的(de)(de)(de)(de)日益(yi)成熟和(he)(he)完善(shan),竹木式(shi)腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架已逐(zhu)步淘汰(tai)出建(jian)筑(zhu)市(shi)場(chang),只在一些(xie)偏遠(yuan)落后(hou)(hou)的(de)(de)(de)(de)地區仍(reng)在使(shi)用(yong)(yong);而門(men)式(shi)腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架、碗扣式(shi)腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架等只在市(shi)政(zheng)、橋(qiao)梁等少量工(gong)(gong)程中(zhong)(zhong)使(shi)用(yong)(yong),初步估計(ji),普通扣件(jian)(jian)式(shi)鋼管(guan)腳(jiao)(jiao)(jiao)(jiao)(jiao)手(shou)(shou)(shou)(shou)(shou)架因其維修簡(jian)單和(he)(he)使(shi)用(yong)(yong)壽命長以及(ji)投入成本低等多(duo)種優點,目(mu)前仍(reng)據中(zhong)(zhong)國(guo)國(guo)內70%以上的(de)(de)(de)(de)市(shi)場(chang),并有(you)較大(da)(da)的(de)(de)(de)(de)發(fa)展(zhan)空間。
腳(jiao)手架具有安裝(zhuang)(zhuang)快捷、牢(lao)固(gu)(gu)、靈活(huo)、適(shi)應(ying)性強(qiang)等特點,產品所有部(bu)件均經冷鍍鋅防腐處理(li),經久耐用、美觀(guan)大方,是廣大建筑行業和裝(zhuang)(zhuang)潢行業理(li)想(xiang)的(de)(de)(de)(de)輔助施(shi)工裝(zhuang)(zhuang)備。液壓升降腳(jiao)手架在(zai)(zai)樓層層面上(shang)(shang)預埋鋼(gang)筋(jin),升降軌(gui)道(dao)(dao)通過預埋鋼(gang)筋(jin)連接在(zai)(zai)樓層層面上(shang)(shang),并伸(shen)(shen)出墻體外(wai)(wai)(wai)側,升降軌(gui)道(dao)(dao)外(wai)(wai)(wai)面端(duan)部(bu)有軌(gui)道(dao)(dao),操(cao)作(zuo)平臺(tai)的(de)(de)(de)(de)內(nei)立桿在(zai)(zai)升降軌(gui)道(dao)(dao)外(wai)(wai)(wai)端(duan)的(de)(de)(de)(de)軌(gui)道(dao)(dao)內(nei),在(zai)(zai)樓層層面上(shang)(shang)還通過預埋鋼(gang)筋(jin)固(gu)(gu)定(ding)安裝(zhuang)(zhuang)有懸臂(bei)梁(liang),懸臂(bei)梁(liang)伸(shen)(shen)出墻體外(wai)(wai)(wai),在(zai)(zai)懸臂(bei)梁(liang)外(wai)(wai)(wai)端(duan)和爬(pa)桿的(de)(de)(de)(de)上(shang)(shang)端(duan)相連接,雙向液壓千斤(jin)(jin)頂(ding)(ding)固(gu)(gu)定(ding)在(zai)(zai)操(cao)作(zuo)平臺(tai)上(shang)(shang),在(zai)(zai)雙向液壓千斤(jin)(jin)頂(ding)(ding)內(nei)插入爬(pa)桿。應(ying)用液壓升降腳(jiao)手架,升降方便(bian)、靈活(huo),又迅速。
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