软土地区后注浆灌注桩承载力计算方法研究  

Study on Bearing Capacity Calculation Method of Post Grouting Cast-in-place Pile in Soft Soil

作　　者：吴华君[1] Wu Huajun(Yiwu Industrial & Commercial College,Yiwu 322000,China)

机构地区：[1]义乌工商职业技术学院,浙江义乌322000

出　　处：《科技通报》2017年第1期186-189,共4页Bulletin of Science and Technology

摘　　要：在宁波软土地区,后注浆灌注桩以其适应性广、施工方法灵活、注浆设备简单、技术经济效果显著及便于普及推广等优点,在工程中大量应用。本文总结了现有后注浆灌注桩承载力的计算方法,并分析各自的特点。针对宁波特有的地质条件,主要以第8土层为桩基持力层,进行了后注浆桩的钻芯试验,分析后注浆桩浆液的扩散情况和桩端固结体大小的确定方法,并提出适合宁波地质条件的桩端后注浆灌注桩承载力计算模型和方法,供设计人员参考。The application of post grouting cast-in-place piles is widly in soft soil, for its advantage of the broad adaptability, ordinary construcion technology and equipment, prominent economic effect, etc. The existing calculation methods of post grouting cast- in- place pile were summarized, and their characteristics were analyzed. According to the specific geological condition in Ningbo, the No.8 soil layer is often used as the bearing stratum of pile foundation. The grout diffusion and the size of pile tip were studied by the borehole coring test of post grouting pile. As a result, the calculation model and formula were put forward for the post grouting cast-in-place pile, which can be reference to engineer.

关 键 词：后注浆 钻芯试验 承载力 

分 类 号：TU473.2[建筑科学—结构工程]