钻孔灌注桩后注浆加固机理及其应用  

Consolidation Mechanism of Post-grouting for Bored Grouting Pile and the Application

作　　者：郑昌晶[1] 张顺英[1] 

机构地区：[1]河北省地矿局秦皇岛矿产水文工程地质大队,河北秦皇岛066001

出　　处：《探矿工程（岩土钻掘工程）》2011年第8期45-49,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：钻孔灌注桩后注浆技术具有缩短桩长、提高承载力、减少桩数、保证桩基质量及节约造价等优点。通过工程实例,阐述了桩端、桩侧复式后注浆的加固机理、承载力的经验计算、控制要点及防治措施。The technical advantages of post-grouting for bored grouting pile are shorter length of pile,the bearing capacity improvement,less number of piles,good quality of pile foundation and the cost saving.Based on the engineering cases,the paper described the consolidation mechanism of compound post grouting for the end and the side of the pile,the empirical formula of bearing capacity,control points and control measures.

关 键 词：钻孔灌注桩 后注浆 加固机理 承载力 

分 类 号：TU473.14[建筑科学—结构工程]