强夯法地基加固机理分析与现场应用研究  

Mechanism Analysis and On-site Application Research of Dynamic Compaction Method for Foundation Reinforcement

作　　者：李英鸽 Li Yingge(China Railway 17th Bureau Group Urban Construction Co.,Ltd.,Guiyang,Guizhou 550025)

机构地区：[1]中铁十七局集团城市建设有限公司,贵州贵阳550025

出　　处：《现代工程科技》2024年第1期105-108,共4页Modern Engineering Technology

摘　　要：强夯法被普遍应用于地基处理,由于强夯地基处理的复杂性,强夯理论远落后于工程实践,不同条件下强夯法地基处理效果的差别很大。通过理论分析与现场试验,基于梅纳公式和文克尔地基模型,并结合贵阳市人才路项目,探究了不同夯击能对有效加固深度与夯击沉降量参数的影响。结果表明:随着夯击能的不断增大,最小有效加固深度与最大有效加固深度均线性增大,但最小有效加固深度相较于最大有效加固深度增加较平缓;实际工程中应选择4000~6000kN·m夯击能的施工夯锤,以保证施工效率和有效加固深度预测率。The dynamic compaction method is widely used in foundation treatment.Due to the complexity of dynamic compaction foundation treatment,the theory of dynamic compaction lags far behind engineering practice,and the effectiveness of dynamic compaction foundation treatment varies greatly under different conditions.Through theoretical analysis and on-site experiments,based on the Mena formula and the Winkle foundation model,and combined with the Guiyang Talent Road project,this study explores the effective reinforcement depth and compaction settlement of different compaction energies.The results show that with the continuous increase of compaction energy,the minimum and maximum effective reinforcement depths increase linearly,but the increase in minimum effective reinforcement depth is relatively gentle compared to the maximum effective reinforcement depth;In practical engineering,construction hammers with a compaction energy of 4000-6000 kN•m should be selected to ensure construction efficiency and effective reinforcement depth prediction rate.

关 键 词：强夯法 夯击沉降量 有效加固深度 夯击能 

分 类 号：TU472.31[建筑科学—结构工程]