Application of static cone penetration test in geotechnical engineering investigation 静力触探试验在岩土工程勘察中的应用
Approximate theoritical and experimental research development of cone penetration resistance in static cone penetration test 静力触探锥头阻力的近似理论与实验研究进展
Adopting the deformation harmony theory , the numeric calculation of the curve of load versus settlement is made . the fitting results between the calculated curve of load - settlement and the measured one of piles with different construction process are illustrated . hence , under the condition of few or no static load test data , the performance of bearing capacity of single bored pile in loess may be predicted utilizing indexes of shear wave velocity , static cone penetration test and modification coefficient of depth , so it is remarkable to reduce the blindness of preliminary design of pile 通过室内试验及原位测试指标进行理论计算与现场实测值的对比,笔者引入了施工工艺修正系数k _ ( c1 )和k _ ( c2 )及深度修正系数,使理论计算值与现场实测值具有良好的一致性,进而通过变形协调理论对荷载?沉降曲线进行数值计算,并用不同施工工艺的实例说明了理论计算荷载?沉降曲线与实测荷载?沉降曲线的拟合效果,从而达到可在不做静载荷试验或少做静载荷试验的情况下通过剪切波速和静力触探试验指标以及施工工艺修正系数等预测黄土地基中钻孔灌注桩承载性状,这对于工程初步设计中减少设计的盲目性具有十分重要的现实意义。