文(wen)章來(lai)源：中國建筑工(gong)程總公(gong)司(si) 發布時間(jian)：2016-12-10
12月(yue)8日，中國建筑工程總公司所屬中建三局獨(du)立(li)完成(cheng)的“寒冷地區海洋環境現澆混凝土橋梁基礎施(shi)工關鍵技術(shu)”成(cheng)果經湖(hu)北省住建廳鑒(jian)定(ding)，總體達到國際先進水(shui)平。
“寒冷地(di)區(qu)海(hai)洋(yang)環境現(xian)(xian)澆(jiao)混凝(ning)土(tu)橋梁基(ji)礎施工(gong)(gong)(gong)(gong)關鍵(jian)技術(shu)”成(cheng)果以唐山納(na)潮(chao)河(he)2號大橋工(gong)(gong)(gong)(gong)程為依托，從海(hai)洋(yang)環境超(chao)長(chang)鉆孔(kong)(kong)灌注(zhu)樁施工(gong)(gong)(gong)(gong)技術(shu)研(yan)(yan)究、鋼(gang)吊箱(xiang)(xiang)承(cheng)臺施工(gong)(gong)(gong)(gong)關鍵(jian)技術(shu)、吹砂(sha)圍(wei)堰(yan)(yan)變形影響因(yin)素(su)分(fen)析(xi)研(yan)(yan)究以及寒冷地(di)區(qu)海(hai)工(gong)(gong)(gong)(gong)混凝(ning)土(tu)配制四個方面開展(zhan)研(yan)(yan)究。并在過程中(zhong)研(yan)(yan)制了(le)(le)(le)海(hai)水(shui)造(zao)漿(jiang)和寒冷地(di)區(qu)海(hai)工(gong)(gong)(gong)(gong)混凝(ning)土(tu)配合比，發明了(le)(le)(le)清除水(shui)下障礙物的機(ji)械抓(zhua)斗(dou)裝置，解(jie)決了(le)(le)(le)海(hai)洋(yang)環境淡水(shui)稀缺鉆孔(kong)(kong)樁成(cheng)孔(kong)(kong)問題和超(chao)長(chang)鉆孔(kong)(kong)灌注(zhu)樁施工(gong)(gong)(gong)(gong)過程中(zhong)障礙物的清除難題；通過對鋼(gang)吊箱(xiang)(xiang)底板(ban)分(fen)塊優(you)化和設計輔助拉桿(gan)，減(jian)少(shao)了(le)(le)(le)封底混凝(ning)土(tu)厚度(du)、節約了(le)(le)(le)混凝(ning)土(tu)用量，提(ti)高了(le)(le)(le)鋼(gang)吊箱(xiang)(xiang)的施工(gong)(gong)(gong)(gong)質(zhi)量及工(gong)(gong)(gong)(gong)效(xiao)；同(tong)時通過理論分(fen)析(xi)、現(xian)(xian)場(chang)試驗研(yan)(yan)究和在吹砂(sha)圍(wei)堰(yan)(yan)底部采(cai)用軟(ruan)體(ti)排等措施，有效(xiao)減(jian)少(shao)了(le)(le)(le)吹砂(sha)圍(wei)堰(yan)(yan)沉(chen)降，實現(xian)(xian)了(le)(le)(le)吹砂(sha)圍(wei)堰(yan)(yan)作為現(xian)(xian)澆(jiao)箱(xiang)(xiang)梁支架的基(ji)礎。
該課題在研究過程(cheng)中，形成(cheng)發明(ming)專利(li)1項，實用(yong)新型專利(li)2項，工(gong)法2篇，公開發表論文4篇。