| 钻孔灌注桩桩顶混凝土下沉冒水泛砂原因分析 |
| 投稿时间：2017-03-15 修订日期：2017-07-05 点此下载全文 |
| 引用本文：骆嘉成.钻孔灌注桩桩顶混凝土下沉冒水泛砂原因分析[J].钻探工程,2017,44(9):85-88.LUO Jia-cheng. Causes Analysis on Concrete Sinking, Water Emitting and Sand Exuding on the Top of Bored Grouting Piles[J]. Drilling Engineering, 2017,44(9):85-88. |
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| 基金项目:国家自然科学基金项目课题“城市道路路基中砂袋层地屏障的减振与耗能研究”（编号： 51578425，51108349） |
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| 中文摘要:近几年来，在温州地区钻孔灌注桩的施工与验收过程中，桩顶混凝土常出现3种现象：下沉、冒水、泛砂，严重影响到基桩的工程质量。从环境因素、材料因素、工艺因素出发，结合钻孔灌注桩的施工经验，分别对上述3种现象的形成原因进行分析研究，并作出相关解释，同时对3种现象之间的关联也作出了相应的说明。 |
| 中文关键词:钻孔灌注桩 桩顶混凝土 混凝土下沉 冒水 泛砂 泌水效应 |
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| Causes Analysis on Concrete Sinking, Water Emitting and Sand Exuding on the Top of Bored Grouting Piles |
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| Abstract:In recent years, concrete settlement, water emitting and sand exuding often appeared on the pile top concrete in the bored grouting piles construction and inspection processes in Wenzhou City, which seriously affected the engineering quality. From the view point of factors of environment, material and technology and combined with the bore grouting pile construction experience, the forming causes of the above mentioned phenomena are analyzed respectively and the relevant explanations are presented in this article, the correlation between these 3 phenomena is also explained. |
| keywords:bored grouting pile pile top concrete concrete settlement water emitting sand exuding bleeding effect |
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