基于聚合物泥浆的旋挖灌注桩施工技术研究  

Research on Construction Technology of Rotary Drilling Bored Pile for Based on Polymer Mud

作　　者：龙建文 董晓斌 张建兵 LONG Jian-wen;DONG Xiao-bin;ZHANG Jian-bing(Guangzhou Research Institute of Construction Industry Co.,Ltd.,Guangzhou 510663;Guangzhou Construction Engineering Co.,Ltd.,Guangzhou 510030;Guangzhou Construction Industry Development Co.,Ltd.,Guangzhou 510663)

机构地区：[1]广州建筑产业研究院有限公司,广州510663 [2]广州建筑股份有限公司,广州510030 [3]广州建筑产业开发有限公司,广州510663

出　　处：《广州建筑》2021年第1期14-18,共5页GUANGZHOU ARCHITECTURE

基　　金：广州市建筑集团有限公司装配式建筑专项资金([2019]-KJ030);广州建筑产业开发有限公司科技进步资金项目(20K00283)。

摘　　要：引入聚合物泥浆材料,对旋挖灌注桩施工技术进行优化研究。对聚合物泥浆试配、聚合物泥浆用量计算、泥浆质量动态控制、排渣处理及泥浆循环等关键环节进行研究。经过实际工程项目实施验证:聚合物泥浆材料可在旋挖灌注桩施工时在旋挖孔内直接造浆,免去提前造浆工作;聚合物泥浆裹渣效果好,沉渣效率高,极大减小了泥浆循环量,采用小型沟槽即可满足泥浆循环要求;采用聚合物泥浆的免泥浆池技术进行旋挖灌注桩施工,有利于节约工期和人工成本,尤其适用于施工场地受限的项目。The paper introduces polymer mud materials to optimize the construction technology of rotary digging cast-in-place piles.Conduct researches on key processes such as polymer mud trial preparation,polymer mud dosage calculation,mud quality dynamic control,slag discharge treatment and mud circulation.The following conclusions are drawn through the verification of actual engineering projects:the polymer mud material can be directly produced in the rotary hole during the construction of the rotary cast-in-place pile,which eliminating the need to make the slurry in advance;the polymer mud has good slag-wrapping effect and high sedimentation efficiency,which greatly reduces the mud circulation,meanwhile the adopting of small grooves can meet the mud circulation requirements;Since there is no need for mud poor,the use of polymer mud technology for rotary digging cast-in-place pile construction is conducive to saving construction period and labor costs,especially suitable for projects with limited construction sites.

关 键 词：聚合物泥浆 免泥浆池 灌注桩 旋挖 泥浆循环 

分 类 号：TV551.42[水利工程—水利水电工程]