流砂层中人工挖孔灌注桩稻草法施工技术  

Construction Technology of Straw Method for Artificial Digging Bored Pile in Quicksand Layer

作　　者：乔世涛 张军伟 常洪进 倪旭东 QIAO Shitao;ZHANG Junwei;CHANG Hongjin;NI Xudong(Shanghai Branch of the First Construction Engineering Company Ltd.of China Construction Second Engineering Bureau,Shanghai 200125,China)

机构地区：[1]中建二局第一建筑工程有限公司上海分公司,上海200125

出　　处：《建筑施工》2021年第6期969-970,共2页Building Construction

摘　　要：在某工程人工挖孔灌注桩施工过程中,灌注桩需要穿越流砂层,而采用钢套管时将会增加施工成本、延误工期,因此需寻求新方法。针对现场实际情况,提出稻草超前护壁法,即利用稻草、钢筋对流砂进行隔挡。稻草在护壁过程中起到滤水作用,可有效防止泥砂通过水的作用进入开挖孔内。实践证明,此方法成本低、效率高、操作简易,达到了阻流砂、保安全、保质量的目标。In the construction process of artificial digging bored pile in a project,the bored pile needs to pass through the quicksand layer,and the use of steel casing will increase the construction cost and delay the construction period,so it is necessary to seek a new method.According to the actual situation of the site,the straw advance wall protection method is put forward,that is,using straw and steel bar to block the sand.The practice shows that this method has the advantages of low cost,high efficiency and easy operation,and achieves the goal of blocking quicksand and ensuring safety and quality.

关 键 词：人工挖孔灌注桩 流砂 钢筋 稻草 护壁 

分 类 号：TU753[建筑科学—建筑技术科学]