文章來源(yuan)：中國建筑工程(cheng)總公(gong)司 發布時間：2017-02-23
2月22日，中國(guo)建(jian)(jian)筑工程總公司所屬(shu)中建(jian)(jian)三局應(ying)用于武漢三官漢江(jiang)公路(lu)大橋的鎖扣鋼(gang)管樁圍堰施工技術，經湖北省住房和城鄉建(jian)(jian)設廳鑒定(ding)，達到國(guo)內(nei)領先水平。
鎖(suo)(suo)扣(kou)鋼管(guan)(guan)樁(zhuang)(zhuang)圍(wei)堰技(ji)術，是(shi)一種采用支護鋼管(guan)(guan)樁(zhuang)(zhuang)、陰（C型(xing)）陽（O型(xing)）鎖(suo)(suo)扣(kou)、圈梁內(nei)支撐組(zu)成的(de)新型(xing)C-O型(xing)鎖(suo)(suo)扣(kou)鋼管(guan)(guan)樁(zhuang)(zhuang)圍(wei)堰。該圍(wei)堰施工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝簡單、速(su)度快(kuai)且圍(wei)堰材料均(jun)可回收再次利用，在(zai)不(bu)良地質、復雜水環境下施工(gong)(gong)(gong)(gong)便捷、工(gong)(gong)(gong)(gong)作面阻礙小，圍(wei)堰結構施工(gong)(gong)(gong)(gong)時(shi)可進行散拼，不(bu)需要大型(xing)施工(gong)(gong)(gong)(gong)船(chuan)舶，對航道影(ying)響小；同時(shi)，通過提高C-O鎖(suo)(suo)扣(kou)加工(gong)(gong)(gong)(gong)精(jing)度，減小鎖(suo)(suo)扣(kou)間隙，保證了深(shen)水水密性，解決了在(zai)深(shen)水、復雜覆(fu)層等地質條件下工(gong)(gong)(gong)(gong)期要求嚴、止(zhi)水效果差、安(an)全(quan)風險大、環保要求高的(de)圍(wei)堰施工(gong)(gong)(gong)(gong)難(nan)題。