摘要
通过对实际工程的原位测试得出精确的张家口大清河流域卵石层抗剪强度参数,根据魏西克圆孔扩张理论推导出公式,将原位测试值代入到推导的公式中,可以得出卵石层的理论抗剪强度参数,采用实测值与理论值的比较确定理论推导方法可靠性。采用大型现场原位试验与圆孔扩张理论相结合对两者进行分析,确定原位试验与理论推导公式之间存在误差率,经过实测值代入理论值的比较,数值结果最大误差为5%,数值结果具有较高的拟合精度,满足工程需要,推导出的理论公式可以为工程设计提供参考。
In this paper,the accurate shear strength parameters of the pebble layer in the Daqing River Basin of Zhangjiakou are obtained through the in-situ test of the actual project,and the formula is derived according to the Weisick circular hole expansion theory.The theoretical shear strength parameter of the layer is determined by comparing the measured value with the theoretical value to determine the reliability of the theoretical derivation method.In this paper,the large-scale field in-situ test and circular hole expansion theory are combined to analyze the two,and it is determined that there is an error rate between the in-situ test and the theoretical derivation formula.After the comparison of the measured value and the theoretical value,the maximum error of the numerical result is 5%,the numerical results have high fitting accuracy and meet the needs of engineering,and the derived theoretical formula can provide reference for engineering design.
作者
马函
姜广州
MA han;JIANG Guang-zhou(Zhangjiakou Dingli Geotechnical Treatment Co.LTD,Hebei Zhangjiakou 075000;Zhangjiakou Jinshi Geotechnical Engineering Technology Co.LTD,Hebei Zhangjiakou 075000)
出处
《河北建筑工程学院学报》
CAS
2022年第4期50-53,共4页
Journal of Hebei Institute of Architecture and Civil Engineering
基金
2020年河北省建设科技研究指导性计划项目(2020-292)
关键词
原位测试
抗剪强度
内摩擦角
魏西克圆孔扩张理论
in situ test
Shear strength
Angle of internal friction
Weisich’s theory of circular hole expansion
