桩底桩侧组合压浆施工技术及现场试验  

Study on construction technology and field test of combined grouting of pile bottom and pile side

作　　者：叶建国 付迎春 刘国 李莉莉 YE Jianguo;FU Yingchun;LIU Guo;LI Lili(Shandong Provincial Communications Planning and Design Institute Group Co.,Ltd.,Shandong Jinan 250031 China)

机构地区：[1]山东省交通规划设计院集团有限公司,山东济南250031

出　　处：《山东交通科技》2021年第4期41-42,66,共3页

摘　　要：结合某工程灌注桩的桩底桩侧组合后压浆技术,对试验桩的自平衡载荷试验成果进行对比分析,研究后压浆对桩端阻力、桩侧阻力和竖向承载力的影响。结果表明:通过采用桩底桩侧组合后压浆技术,能大幅度提高基桩的承载力和刚度。Combined with the post-grouting technology at the bottom and side of a cast-in-place pile,the selfbalancing load test results of the test pile were compared and analyzed,and the effects of post-grouting on pile tip resistance,pile side resistance and vertical bearing capacity were studied.The results show that the bearing capacity and stiffness of foundation pile can be greatly improved by using the combined grouting technique at the bottom and side of pile.

关 键 词：桩基后压浆 桩端承载力 刚度 

分 类 号：TU473.1[建筑科学—结构工程]