基于堆载法的建筑基桩单桩竖向抗压承载力特征静载试验分析  

Static Load Test Analysis of Vertical Compressive Bearing Capacity Characteristics of Building Foundation Piles Based on Pile Loading Method

作　　者：李雪 LI Xue(Jiashan Longzheng Engineering Testing Technology Co.,Ltd.,Jiashan 314100,China)

机构地区：[1]嘉善隆正工程检测科技有限公司,嘉善314100

出　　处：《价值工程》2023年第16期132-134,共3页Value Engineering

摘　　要：目的:运用堆载法,开展建筑基桩单桩竖向抗压承载力特征值的静载试验研究,确定基桩单桩设计承载力是否符合技术规范要求。方法:准备静载试验所需的仪器与装置,基桩的轴线与千斤顶的合力中心重合,在千斤顶上施加堆载物荷重,通过此种方式,产生一个竖向的作用力,将竖向作用力采用逐级加载的方式,传递给试验桩。通过布置试验装置、加、卸载分级,完成单桩竖向抗压承载力静载试验。结果:提出的基于堆载法的静载试验方法在实际应用中的效果良好,按照规范,该试验方法可以较好地实现对建筑基础桩单桩竖向抗压承载力的检测。结论:试验中不同桩号的建筑地基中的基桩单桩竖向抗压承载力特征值均符合设计规范。Objective:To conduct static load tests on the characteristic values of vertical compressive bearing capacity of building foundation piles using the stacking method,and to determine whether the design bearing capacity of foundation piles meets the requirements of technical specifications.Method:Prepare the instruments and devices required for the static load test.The axis of the foundation pile coincides with the center of the combined force of the jack,and apply the load of the pile to the jack.Through this method,a vertical force is generated,and the vertical force is transmitted to the test pile through a step-by-step loading method.Complete the static load test of the vertical compressive bearing capacity of a single pile by arranging test equipment,loading and unloading grading.Result:The static load test method based on the pile loading method proposed has shown good results in practical applications.According to the specifications,this test method can effectively detect the vertical compressive bearing capacity of building foundation piles.Conclusion:The characteristic values of vertical compressive bearing capacity of single pile foundation in different pile numbers of building foundations in the experiment meet the design specifications.

关 键 词：堆载法 静载试验 抗压承载力 竖向 单桩 建筑基桩 

分 类 号：TU473.16[建筑科学—结构工程]