后压浆技术在桥梁工程中的应用与分析  

Application of the post-grouting technique to bridge engineering

作　　者：钱让清[1] 马秀全[2] 

机构地区：[1]安徽交通职业技术学院土木工程系,安徽合肥230051 [2]安徽省公路勘察设计院,安徽合肥230041

出　　处：《合肥工业大学学报（自然科学版）》2006年第5期573-575,579,共4页Journal of Hefei University of Technology：Natural Science

基　　金：交通科技通达计划资助项目(2005013);安徽省重点教学研究资助项目(2005102)

摘　　要：论文介绍某桥梁工程采用后压浆技术对提高大直径钻孔灌注桩承载力的可靠度,和提高大直径钻孔灌注桩桩底桩侧压浆后极限摩阻力系数的方法;通过试桩设计、自平衡法加载试验,测试结果分析表明,按照设计规定的压浆量和压力进行,大直径钻孔灌注桩经后压浆技术处理后,可以大幅度提高其承载力,降低工程造价,加快施工进度,提高桩基质量的稳定性和可靠度。The post-grouting technique is adopted in a bridge project to enhance the bearing capacity of large-diameter cast-in-place piles and to increase the maximum friction coefficients at the bottom of the piles and around the piles after grouting. The test pile design is made,and the Tomer Loading Test is carried out. The testresults are analyzed,and it is indicated that with the designed pressure and grouting quantity,the bearing capacity of large-diameter cast-in-place piles can be enhanced significantly. As a result, the cost of the project can be reduced, the construction progress sped up,and the stability and reliability of the quality of pile foundation improved.

关 键 词：桥梁工程 后压浆技术 桩基质量 可靠度 

分 类 号：U445.552[建筑科学—桥梁与隧道工程]