文(wen)章來(lai)源：中國(guo)建筑(zhu)工程(cheng)總公(gong)司(si) 發布(bu)時間：2016-12-24
12月21日，中國建(jian)(jian)筑工(gong)程總(zong)公司所屬中建(jian)(jian)一局研發(fa)的“王府井(jing)大飯店改造工(gong)程綜合施工(gong)技術”經北京市住建(jian)(jian)委鑒定，達到(dao)國際領先水平(ping)。
該成(cheng)果(guo)包含“既有地(di)下(xia)(xia)結(jie)(jie)構外(wai)(wai)墻配合(he)暗柱(zhu)及(ji)預(yu)應(ying)(ying)(ying)(ying)力(li)錨桿基(ji)坑支護技(ji)(ji)術(shu)(shu)”、“格構式(shi)鋼管扣(kou)件(jian)獨立(li)柱(zhu)支撐(cheng)(cheng)施(shi)(shi)工(gong)(gong)技(ji)(ji)術(shu)(shu)”、“無(wu)粘結(jie)(jie)預(yu)應(ying)(ying)(ying)(ying)力(li)井(jing)宇梁拆除(chu)施(shi)(shi)工(gong)(gong)技(ji)(ji)術(shu)(shu)”、“型鋼懸挑式(shi)吊籃施(shi)(shi)工(gong)(gong)技(ji)(ji)術(shu)(shu)”、“大跨度(du)懸挑型鋼斜撐(cheng)(cheng)腳手(shou)架技(ji)(ji)術(shu)(shu)”。其中(zhong)研(yan)發的(de)“既有地(di)下(xia)(xia)結(jie)(jie)構外(wai)(wai)墻配合(he)暗柱(zhu)及(ji)預(yu)應(ying)(ying)(ying)(ying)力(li)錨桿基(ji)坑支護技(ji)(ji)術(shu)(shu)” 利用(yong)既有結(jie)(jie)構地(di)下(xia)(xia)室外(wai)(wai)墻，并在下(xia)(xia)部設置豎(shu)向型鋼支撐(cheng)(cheng)，形成(cheng)整(zheng)體支撐(cheng)(cheng)體系，解(jie)決了(le)(le)基(ji)坑緊鄰建筑紅線，基(ji)坑支護無(wu)法施(shi)(shi)工(gong)(gong)的(de)問題(ti)，減少(shao)了(le)(le)施(shi)(shi)工(gong)(gong)周期，起到(dao)了(le)(le)綠色環保作用(yong)。“無(wu)粘結(jie)(jie)預(yu)應(ying)(ying)(ying)(ying)力(li)井(jing)宇梁拆除(chu)施(shi)(shi)工(gong)(gong)技(ji)(ji)術(shu)(shu)”針(zhen)對井(jing)字梁進(jin)行小跨度(du)支撐(cheng)(cheng)加(jia)固，將預(yu)應(ying)(ying)(ying)(ying)力(li)筋采(cai)取(qu)逐級卸(xie)載的(de)方式(shi)，分段切割，解(jie)決了(le)(le)無(wu)粘結(jie)(jie)預(yu)應(ying)(ying)(ying)(ying)力(li)結(jie)(jie)構拆除(chu)的(de)施(shi)(shi)工(gong)(gong)難(nan)題(ti)，保證(zheng)了(le)(le)拆除(chu)工(gong)(gong)程(cheng)的(de)安(an)全。該技(ji)(ji)術(shu)(shu)成(cheng)果(guo)屬(shu)國(guo)內首次實(shi)踐和(he)應(ying)(ying)(ying)(ying)用(yong)，保證(zheng)了(le)(le)施(shi)(shi)工(gong)(gong)安(an)全、質量和(he)工(gong)(gong)期，取(qu)得了(le)(le)較好的(de)經濟和(he)社會(hui)效益(yi)。
目(mu)前，該(gai)技術成(cheng)果已全面(mian)應(ying)用于王(wang)府(fu)井大飯店改造工(gong)程項目(mu)，取得了顯(xian)著(zhu)成(cheng)效。