【摘要】 笔者针对京秦客运通道提速改造工程 ,利用低应变动测法对混凝土灌注桩承载力和桩完整性进行了检测 ;根据低应变动测桩的频率理论 ,考虑波在不同介质中的传播特性 ,推导了频率公式 ;从而得出了低应变动测确定单桩承载力的理论依据。对桩检测方法和判定标准进行了分类 ,对桩的承载力和桩身完整性进行了分析讨论。为低应变动测分析法在工程上的应用积累了经验 ,对该法在工程上的推广应用具有指导意义。更多还原

【Abstract】 In view of reconstruction and speed up of Jing Qin railway, using low strain dynamic measurement the pile loading capacity and its integrity were measured. The frequency theory of low strain dynamic pile measurement is described. Considering the wave propagation properties in different medium, the frequency formula is violated, the theoretical criteria of dynamical pile measurement is obtained. The loading capacity and integrity of concrete pile were inspected and analyzed. At the same time, the application experience of this measurement accumulated, which would be useful in its further application.更多还原