文章(zhang)來源(yuan)：中國建(jian)筑工程總公司 發布時間：2016-12-24
12月(yue)21日，中(zhong)國建筑工(gong)程總(zong)公司所屬中(zhong)建一局(ju)研發的“王府井大飯店改造工(gong)程綜(zong)合(he)施工(gong)技(ji)術”經北(bei)京市住建委鑒定(ding)，達(da)到國際(ji)領先水平。
該(gai)成果包含“既有地下(xia)結(jie)構(gou)外(wai)墻配合(he)暗柱及(ji)預(yu)(yu)應(ying)(ying)力(li)(li)錨(mao)(mao)桿(gan)基(ji)(ji)坑(keng)支(zhi)(zhi)護(hu)技(ji)(ji)術(shu)(shu)”、“格(ge)構(gou)式(shi)鋼管扣件獨立(li)柱支(zhi)(zhi)撐(cheng)(cheng)施(shi)工(gong)(gong)技(ji)(ji)術(shu)(shu)”、“無(wu)粘(zhan)結(jie)預(yu)(yu)應(ying)(ying)力(li)(li)井(jing)宇梁拆除(chu)(chu)施(shi)工(gong)(gong)技(ji)(ji)術(shu)(shu)”、“型(xing)鋼懸(xuan)挑式(shi)吊籃施(shi)工(gong)(gong)技(ji)(ji)術(shu)(shu)”、“大跨度懸(xuan)挑型(xing)鋼斜撐(cheng)(cheng)腳手架技(ji)(ji)術(shu)(shu)”。其中研發的“既有地下(xia)結(jie)構(gou)外(wai)墻配合(he)暗柱及(ji)預(yu)(yu)應(ying)(ying)力(li)(li)錨(mao)(mao)桿(gan)基(ji)(ji)坑(keng)支(zhi)(zhi)護(hu)技(ji)(ji)術(shu)(shu)” 利用(yong)既有結(jie)構(gou)地下(xia)室外(wai)墻，并在下(xia)部(bu)設置(zhi)豎向型(xing)鋼支(zhi)(zhi)撐(cheng)(cheng)，形成整(zheng)體支(zhi)(zhi)撐(cheng)(cheng)體系，解決了(le)(le)基(ji)(ji)坑(keng)緊鄰建筑(zhu)紅線，基(ji)(ji)坑(keng)支(zhi)(zhi)護(hu)無(wu)法施(shi)工(gong)(gong)的問題，減少(shao)了(le)(le)施(shi)工(gong)(gong)周期，起到了(le)(le)綠色環保(bao)作用(yong)。“無(wu)粘(zhan)結(jie)預(yu)(yu)應(ying)(ying)力(li)(li)井(jing)宇梁拆除(chu)(chu)施(shi)工(gong)(gong)技(ji)(ji)術(shu)(shu)”針對井(jing)字梁進行小跨度支(zhi)(zhi)撐(cheng)(cheng)加固(gu)，將預(yu)(yu)應(ying)(ying)力(li)(li)筋采取(qu)逐(zhu)級卸載的方式(shi)，分段切(qie)割，解決了(le)(le)無(wu)粘(zhan)結(jie)預(yu)(yu)應(ying)(ying)力(li)(li)結(jie)構(gou)拆除(chu)(chu)的施(shi)工(gong)(gong)難題，保(bao)證了(le)(le)拆除(chu)(chu)工(gong)(gong)程的安(an)全(quan)。該(gai)技(ji)(ji)術(shu)(shu)成果屬國內(nei)首次(ci)實(shi)踐和應(ying)(ying)用(yong)，保(bao)證了(le)(le)施(shi)工(gong)(gong)安(an)全(quan)、質量(liang)和工(gong)(gong)期，取(qu)得了(le)(le)較好的經濟和社(she)會(hui)效益。
目前，該技(ji)術成果(guo)已全面應用于王府井(jing)大飯(fan)店改(gai)造工程項(xiang)目，取得了(le)顯著成效。