文章來(lai)源：中國建(jian)筑工程總公司(si) 發布時間：2016-12-24
12月21日(ri)，中(zhong)國建筑工程總公司所屬中(zhong)建一(yi)局研發(fa)的“王府井(jing)大飯店改(gai)造工程綜合施(shi)工技術”經北京(jing)市住建委鑒定，達到(dao)國際領先水平。
該成果包(bao)含“既有(you)地(di)(di)(di)下(xia)(xia)結(jie)構(gou)外墻配(pei)合暗柱(zhu)及預(yu)應力錨(mao)桿基坑支(zhi)護技(ji)術(shu)(shu)(shu)(shu)(shu)”、“格構(gou)式鋼(gang)(gang)管(guan)扣件獨立柱(zhu)支(zhi)撐施(shi)工(gong)(gong)(gong)技(ji)術(shu)(shu)(shu)(shu)(shu)”、“無粘(zhan)結(jie)預(yu)應力井(jing)宇梁拆(chai)除施(shi)工(gong)(gong)(gong)技(ji)術(shu)(shu)(shu)(shu)(shu)”、“型(xing)鋼(gang)(gang)懸(xuan)挑式吊籃施(shi)工(gong)(gong)(gong)技(ji)術(shu)(shu)(shu)(shu)(shu)”、“大跨度懸(xuan)挑型(xing)鋼(gang)(gang)斜(xie)撐腳(jiao)手架技(ji)術(shu)(shu)(shu)(shu)(shu)”。其中研發的(de)“既有(you)地(di)(di)(di)下(xia)(xia)結(jie)構(gou)外墻配(pei)合暗柱(zhu)及預(yu)應力錨(mao)桿基坑支(zhi)護技(ji)術(shu)(shu)(shu)(shu)(shu)” 利用既有(you)結(jie)構(gou)地(di)(di)(di)下(xia)(xia)室外墻，并(bing)在下(xia)(xia)部設置豎向型(xing)鋼(gang)(gang)支(zhi)撐，形成整(zheng)體支(zhi)撐體系，解決(jue)了(le)(le)(le)基坑緊鄰建(jian)筑紅線，基坑支(zhi)護無法施(shi)工(gong)(gong)(gong)的(de)問(wen)題，減(jian)少了(le)(le)(le)施(shi)工(gong)(gong)(gong)周期，起到了(le)(le)(le)綠色環(huan)保作用。“無粘(zhan)結(jie)預(yu)應力井(jing)宇梁拆(chai)除施(shi)工(gong)(gong)(gong)技(ji)術(shu)(shu)(shu)(shu)(shu)”針對井(jing)字梁進行小跨度支(zhi)撐加固，將預(yu)應力筋采取(qu)逐級卸載(zai)的(de)方式，分段切割，解決(jue)了(le)(le)(le)無粘(zhan)結(jie)預(yu)應力結(jie)構(gou)拆(chai)除的(de)施(shi)工(gong)(gong)(gong)難題，保證(zheng)了(le)(le)(le)拆(chai)除工(gong)(gong)(gong)程的(de)安(an)(an)全(quan)。該技(ji)術(shu)(shu)(shu)(shu)(shu)成果屬國內首次實踐和應用，保證(zheng)了(le)(le)(le)施(shi)工(gong)(gong)(gong)安(an)(an)全(quan)、質量和工(gong)(gong)(gong)期，取(qu)得了(le)(le)(le)較(jiao)好(hao)的(de)經濟和社(she)會效益。
目前，該技術(shu)成(cheng)果(guo)已(yi)全(quan)面(mian)應用(yong)于(yu)王府井大(da)飯店改造工程項目，取(qu)得了顯著成(cheng)效。