岩溶地区钻孔灌注桩基础补强加固设计研究  

Research on Reinforcement Design of Bored Pile Foundation in Karst Area

作　　者：刘莹莹 Liu Yingying(Shanxi Fifth Construction Group Co.Ltd.,Taiyuan,Shanxi 030000)

机构地区：[1]山西五建集团有限公司,山西太原030000

出　　处：《江西建材》2024年第12期242-244,共3页

摘　　要：为提升岩溶地区钻孔灌注桩基础承载性能,文中以山西某建筑基础工程为依托,基于工程地质条件选择最佳钻孔灌注桩补强加固设计方案,并对施工后效果进行评价。根据工后检测结果可知,所有桩承载力为7 250~8 100 kN,平均值为7 561 kN;沉降量范围为8.4~21.3 mm,平均值为14.2 mm,均在允许值范围内,且所有桩身完整且连续。这表明,文中提出的压密注浆技术应用效果良好,能够有效提升钻孔灌注桩的力学强度。In order to improve the bearing performance of bored pile foundation in karst area,based on the foundation project of a construction project in Shanxi Province,the optimal design scheme of bored pile reinforcement was selected based on the engineering geological conditions,and the post-construction effect was evaluated.According to the results of post-construction testing,the bearing capacity of all piles ranges from 7250 to 8100 kN,with an average value of 7561 kN.The settlement amount ranges from 8.4 to 21.3 mm,and the average value is 14.2 mm,all within the allowable value range,and all pile bodies are complete and continuous.The results show that the proposed compaction grouting technology has a good application effect and can effectively improve the mechanical strength of bored pile.

关 键 词：岩溶地区 地基补强 钻孔灌注桩 设计方案 施工技术 补强效果 

分 类 号：TU74[建筑科学—建筑技术科学]