混凝(ning)土輸(shu)送(song)管(guan)(guan)，應(ying)(ying)根據工程和施(shi)工場地特點(dian)、混凝(ning)土澆(jiao)筑(zhu)方案(an)進(jin)行配管(guan)(guan)。宜縮(suo)短管(guan)(guan)線長度，少(shao)用彎(wan)管(guan)(guan)和軟(ruan)管(guan)(guan)。輸(shu)送(song)管(guan)(guan)的鋪設應(ying)(ying)保證(zheng)安全施(shi)工，便(bian)于清洗管(guan)(guan)道、排除故障和裝(zhuang)拆維修。

在同(tong)(tong)一條管(guan)(guan)(guan)(guan)(guan)線中，應(ying)(ying)(ying)采用相(xiang)同(tong)(tong)管(guan)(guan)(guan)(guan)(guan)徑(jing)的(de)混(hun)凝(ning)土輸(shu)送(song)(song)(song)管(guan)(guan)(guan)(guan)(guan);同(tong)(tong)時(shi)采用新、舊管(guan)(guan)(guan)(guan)(guan)段(duan)時(shi)，應(ying)(ying)(ying)將新管(guan)(guan)(guan)(guan)(guan)布置(zhi)在泵(beng)送(song)(song)(song)壓力較大(da)處;管(guan)(guan)(guan)(guan)(guan)線宜布置(zhi)得橫(heng)平豎直。應(ying)(ying)(ying)繪制布管(guan)(guan)(guan)(guan)(guan)簡圖(tu)，列出各(ge)種管(guan)(guan)(guan)(guan)(guan)件(jian)、管(guan)(guan)(guan)(guan)(guan)連接環(huan)、彎管(guan)(guan)(guan)(guan)(guan)等(deng)的(de)規(gui)格和數量(liang)，提出備件(jian)清單。混(hun)凝(ning)土輸(shu)送(song)(song)(song)管(guan)(guan)(guan)(guan)(guan)應(ying)(ying)(ying)根據粗(cu)(cu)骨料(liao)最大(da)粒(li)徑(jing)、混(hun)凝(ning)土泵(beng)型(xing)號、混(hun)凝(ning)土輸(shu)出量(liang)的(de)輸(shu)送(song)(song)(song)距離，以(yi)及(ji)輸(shu)送(song)(song)(song)難易程度等(deng)進行(xing)選(xuan)擇(ze)。輸(shu)送(song)(song)(song)管(guan)(guan)(guan)(guan)(guan)應(ying)(ying)(ying)具有與泵(beng)送(song)(song)(song)條件(jian)相(xiang)適應(ying)(ying)(ying)的(de)強度。應(ying)(ying)(ying)使(shi)用無龜裂、無凹凸損傷和無彎折的(de)管(guan)(guan)(guan)(guan)(guan)段(duan)。輸(shu)送(song)(song)(song)管(guan)(guan)(guan)(guan)(guan)的(de)接頭應(ying)(ying)(ying)嚴密，有足夠強度，并能(neng)快速裝拆。輸(shu)送(song)(song)(song)管(guan)(guan)(guan)(guan)(guan)最小(xiao)管(guan)(guan)(guan)(guan)(guan)徑(jing)為(wei)100mm時(shi)，粗(cu)(cu)骨料(liao)最大(da)粒(li)徑(jing)不能(neng)超(chao)過25mm，最小(xiao)管(guan)(guan)(guan)(guan)(guan)徑(jing)為(wei)125mm時(shi)，最大(da)粒(li)徑(jing)不能(neng)超(chao)過40mm。

垂直向上配管(guan)(guan)(guan)時，地面(mian)水(shui)平管(guan)(guan)(guan)長度不(bu)宜小于垂直管(guan)(guan)(guan)長度的四分之(zhi)一，且不(bu)宜小于15m，或遵守(shou)產(chan)品說明書中的規(gui)定。在混凝(ning)土(tu)泵機Y形管(guan)(guan)(guan)出料口3~6m處的輸(shu)送管(guan)(guan)(guan)根部(bu)應設置截止閥，以防混凝(ning)土(tu)拌和物反流。

泵送施(shi)工地下(xia)結(jie)構物(wu)時(shi)，地上水平(ping)管(guan)(guan)軸線應(ying)與Y形(xing)管(guan)(guan)出料(liao)口(kou)軸線垂直。傾斜向下(xia)配(pei)管(guan)(guan)時(shi)，應(ying)在斜管(guan)(guan)上端設排(pai)氣閥;當高(gao)(gao)差(cha)大于20m時(shi)，應(ying)在斜管(guan)(guan)下(xia)端下(xia)設5倍高(gao)(gao)差(cha)長度(du)(du)的水平(ping)管(guan)(guan);如條件限制(zhi)，可增加彎(wan)管(guan)(guan)或環(huan)形(xing)管(guan)(guan)，滿(man)足5倍高(gao)(gao)差(cha)長度(du)(du)要求。

混凝土輸送管(guan)(guan)(guan)(guan)的(de)固(gu)(gu)定(ding)，不得直(zhi)接(jie)支(zhi)(zhi)(zhi)承在(zai)鋼筋、模板及(ji)預(yu)埋件上(shang)，水平管(guan)(guan)(guan)(guan)宜(yi)(yi)每隔一(yi)定(ding)距離用(yong)支(zhi)(zhi)(zhi)架、臺墊、吊具等固(gu)(gu)定(ding)，以便于排除堵管(guan)(guan)(guan)(guan)、裝拆(chai)和(he)清洗管(guan)(guan)(guan)(guan)道;垂(chui)直(zhi)管(guan)(guan)(guan)(guan)宜(yi)(yi)用(yong)預(yu)埋件固(gu)(gu)定(ding)在(zai)墻和(he)柱或樓板頂(ding)留(liu)孔(kong)處(chu)。在(zai)墻及(ji)柱上(shang)，每節管(guan)(guan)(guan)(guan)不得少(shao)于1個(ge)固(gu)(gu)定(ding)點(dian)，在(zai)每層樓板預(yu)留(liu)孔(kong)處(chu)均應固(gu)(gu)定(ding)。垂(chui)直(zhi)管(guan)(guan)(guan)(guan)下(xia)端的(de)彎管(guan)(guan)(guan)(guan)，不應作為(wei)上(shang)部管(guan)(guan)(guan)(guan)道的(de)支(zhi)(zhi)(zhi)撐(cheng)點(dian)。宜(yi)(yi)設(she)鋼支(zhi)(zhi)(zhi)撐(cheng)承受垂(chui)直(zhi)管(guan)(guan)(guan)(guan)重量。當垂(chui)直(zhi)管(guan)(guan)(guan)(guan)固(gu)(gu)定(ding)在(zai)腳手架上(shang)時，根(gen)據需要可對腳手架進行加固(gu)(gu)。管(guan)(guan)(guan)(guan)道接(jie)頭卡箍處(chu)不得漏漿。

炎熱(re)季(ji)節施工(gong)，宜用濕罩布、溫(wen)草袋等遮蓋混(hun)凝(ning)(ning)土輸(shu)送管(guan)，避(bi)免陽光照射。嚴寒季(ji)節施工(gong)，宜用保(bao)溫(wen)材料包裹}昆(kun)凝(ning)(ning)土輸(shu)送管(guan)，防止管(guan)內混(hun)凝(ning)(ning)土受凍(dong)，并保(bao)證混(hun)凝(ning)(ning)土的入模(mo)溫(wen)度。

當水平(ping)輸(shu)(shu)送(song)(song)距(ju)離超(chao)過(guo)200m，垂(chui)直(zhi)輸(shu)(shu)送(song)(song)距(ju)離超(chao)過(guo)40m，輸(shu)(shu)送(song)(song)管(guan)(guan)垂(chui)直(zhi)向下或斜(xie)管(guan)(guan)前面(mian)布置水平(ping)管(guan)(guan)，混凝土拌和(he)物單位水泥用量低于300kg/m³時(shi)，必須合理選擇配(pei)管(guan)(guan)方法和(he)泵(beng)送(song)(song)工藝，宜用直(zhi)徑(jing)大的(de)混凝土輸(shu)(shu)送(song)(song)管(guan)(guan)和(he)長的(de)錐形管(guan)(guan)，少用彎管(guan)(guan)和(he)軟管(guan)(guan)。當輸(shu)(shu)送(song)(song)高度超(chao)過(guo)混凝土泵(beng)的(de)最大輸(shu)(shu)送(song)(song)距(ju)離時(shi)，可(ke)用接力泵(beng)(后(hou)繼泵(beng))進行泵(beng)送(song)(song)。

此外(wai)，還應根據(ju)工(gong)程(cheng)結構特點、施工(gong)工(gong)藝(yi)、布(bu)(bu)料(liao)要(yao)求和(he)配管(guan)情況等，選擇(ze)布(bu)(bu)料(liao)設(she)備。應根據(ju)結構平(ping)面(mian)(mian)尺寸、配管(guan)情況和(he)布(bu)(bu)料(liao)桿(gan)長度，布(bu)(bu)置布(bu)(bu)料(liao)設(she)備，且其應能覆蓋(gai)整(zheng)個結構平(ping)面(mian)(mian)，并能均勻、迅速(su)地(di)進行布(bu)(bu)料(liao)。布(bu)(bu)料(liao)設(she)備應安設(she)牢固和(he)穩(wen)定。

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