片石置换法在软土浅基坑工程中的应用  

Application of Schist Replacement Method in Soft Soil Shallow Foundation Engineering

作　　者：王魏 张治 张婷[2] WANG Wei;ZHANG Zhi;ZHANG Ting(CCCC Origin Water Construction Group Co.,Ltd.,Beijing,100094,China;College of Construction Engineering,Jilin University,Changchun,Jilin,130026,China)

机构地区：[1]中交碧水源建设集团有限公司,北京100094 [2]吉林大学建设工程学院,吉林长春130026

出　　处：《建材技术与应用》2024年第5期25-28,共4页Research and Application of Building Materials

基　　金：中交碧水源建设集团有限公司科技研发项目(BSYJS-DSEQ-2023-JS-01)。

摘　　要：在公路工程中常采用抛石挤淤法来加固处理含水量高、孔隙比大、透水性弱及抗剪强度低的软弱地基。基于抛石挤淤法提出软土浅基坑工程的片石换填技术。采用有限元分析软件PLAXIS 3D对基坑开挖及基底加固过程进行数值模拟,分析了不同的片石换填厚度对基坑承载能力及变形的影响,并将计算结果与实测数据进行对比,验证了有限元计算结果。In highway engineering,the method of ripping and silting is often used to reinforce the soft foundation with high water content,large pore ratio,weak water permeability and low shear strength.Based on the method of ripping and silting,the technology of stone replacement and filling in shallow foundation pit engineering of soft soil is proposed.The finite element analysis software PLAXIS 3D was used to simulate the process of foundation pit excavation and foundation reinforcement,and the influence of different thickness of flake filling on the bearing capacity and deformation of foundation pit was analyzed.The calculation results were compared with the measured data to verify the finite element calculation results.

关 键 词：浅基坑 软弱地基 片石换填 数值模拟 

分 类 号：TU472[建筑科学—结构工程]