混凝土預(yù)制柱吊裝方案

6、基礎(chǔ)準(zhǔn)備：杯形基礎(chǔ)已澆筑完成，在吊裝前要在基礎(chǔ)杯口面上2.1鋼筋混凝土柱子的吊點(diǎn)位置和吊裝驗(yàn)算在設(shè)計(jì)計(jì)算鋼筋混本工程預(yù)制柱翻身時(shí)采用兩點(diǎn)起吊，吊點(diǎn)位置及吊環(huán)尺寸由設(shè)計(jì)院進(jìn)行深化設(shè)計(jì)所得，高大柱吊環(huán)大樣如下：經(jīng)推導(dǎo)可知，對(duì)等截面柱，當(dāng)一點(diǎn)起吊的吊點(diǎn)至柱頂距離為0.239l（l為柱子長(zhǎng)度）/l=2a-.l.KA2K—考慮換算后力臂變化的系數(shù)/)式中MK—吊裝時(shí)柱子承受的彎矩（N.㎜）M—彎矩設(shè)計(jì)值（N.㎜）Msk=Kb.柱翻身過(guò)程重要保證起吊的兩根鋼絲繩受力均勻，緩慢起吊，吊車司機(jī)必須服從本工程采用旋轉(zhuǎn)法起吊(起重機(jī)邊起鉤、邊旋轉(zhuǎn)，使柱身繞柱腳旋轉(zhuǎn)而逐漸吊起的方法稱為旋轉(zhuǎn)法)。其要點(diǎn)是保持柱腳位置不動(dòng)，并使柱的吊點(diǎn)，柱腳中心和杯口中心三點(diǎn)144122b）平面布置4-鋼柱2-副機(jī)3-基礎(chǔ)a)滑行過(guò)程33柱柱石混凝土。所用混凝土的強(qiáng)度等級(jí)可比原構(gòu)件的混凝土強(qiáng)度等級(jí)提高一級(jí)。第二次：當(dāng)?shù)谝淮喂嘧⒌幕炷吝_(dá)到設(shè)計(jì)強(qiáng)度等級(jí)的25%時(shí)，即可拔除楔塊，將杯口4.2各種吊裝作業(yè)前，應(yīng)預(yù)先在吊裝現(xiàn)場(chǎng)設(shè)置安全警戒標(biāo)志并設(shè)專人監(jiān)護(hù)，非施工人員4.16必須按《吊裝安全作業(yè)證》上填報(bào)的內(nèi)容進(jìn)行作業(yè)4.17對(duì)吊裝作業(yè)審批手續(xù)不全，安全措施不落實(shí)，作業(yè)3.3.自然災(zāi)害（如雷電、沙塵暴、地震強(qiáng)風(fēng)、強(qiáng)降雨、暴風(fēng)雪等）對(duì)設(shè)施的嚴(yán)重?fù)p壞。速度通過(guò)電話進(jìn)行報(bào)警，如有人員傷亡的，要撥打“120鋼絲繩力學(xué)性能芯鋼絲繩芯鋼絲繩鋼絲繩鋼絲繩鋼絲繩鋼絲繩鋼絲繩鋼絲繩鋼絲繩鋼絲繩鋼絲繩鋼絲繩鋼絲繩Mm%Kg/100mKN23045067840.6042.90927.9031.3039.5042.7042.2045.6044.9048.5047.5042.5041.6046.8059.0063.8063.0068.1067.81.2084.6091.5089.4096.6058.1065.4082.4089.108899.30089.90205.00201.00217.00235.00254.00248.00268.00166.00187.00236.00255.00252.00272.00268.0284.00202.00198.00223.00281.00303.00300.00324.00319.00345.00237.00233.00262.00329.00356.00352.00381.00374.00405.00429.00419.00453.00275.00270.00303.00382.00413.00408.00441.00434.00470.00460.00498.00486.00310.00348.00439.00474.00469.00507.00498.00539.00604.00352.00396.00499.00540.00533.00577.00567.00613.00601.00650.00635.00687.00406.00398.00447.00564.00610.00602.00651.00640.00693.00679.00455.00446.00502.00