摘要
超重型圆锥动力触探试验常用于我国西部地区水电开发较为复杂的地质条件工程项目中,现行国家规范与研究相对较少,其杆长修正方法与试验成果转换土层变形模量等应用方法在工程实际运用过程中存在较大的局限性。本文利用信赖域法的数学优化算法,对超重型动力触探试验的杆长修正系数进行数学优化研究,获取了超重型圆锥动力触探锤击数修正系数与杆长、锤击数的二元函数关系式,同时基于西南某水电工程前期勘察所开展的钻孔旁压试验与超重型动力触探试验TU413拟合研究后,获得了该区域含砾中粗砂层的锤击数修正值和土层变形模量的相关关系,研究成果有助于超重型动力触探试验在该地层区域的快速有效应用。
Extra heavy dynamic penetration test is an in-situ test,frequently utilized for hydropower projects with comprehensive geological conditions in the western area of China.The current Chinese Codes provide relatively less standards related to it.Also the modification coefficient and test results utilization methods listed in the Codes has big limitations in practical application process.Based on an optimization algorithm,this paper utilizes a mathematical methods to study the rod length coefficient modification and introduces a function for modification.After applying this method to a large hydropower station in Southwest China,the relationship between the test results and the foundation soil deformation modulus is also obtained.The study can assist the extra heavy penetration test to be faster and more accurately utilized in the study area.
作者
单诗涵
裴向军
封奇博
苏栋
Shan Shihan;Pei Xiangjun;Feng Qibo;Su Dong(PowerChina Chengdu Engineering Co.,Ltd.,Chengdu 61000,P.R.China;College of Environment and Civil Engineering,Chengdu University of Technology,Chengdu 610000,P.R.China)
出处
《地下空间与工程学报》
CSCD
北大核心
2020年第S02期885-890,933,共7页
Chinese Journal of Underground Space and Engineering
关键词
超重型动力触探
杆长修正
非线性拟合
变形模量
extra heavy dynamic penetration test
modified coefficient of rod length
nonlinear fitting
modulus
作者简介
单诗涵(1986—),男,四川珙县人,硕士,高级工程师,主要从事工程地质专业工作与国际市场开发。E-mail:125438714@qq.com;通讯作者:裴向军(1970—),男,内蒙古赤峰人,博士,教授,博士生导师,主要从事地质工程方面的研究。E-mail:peixj0119@tom.com
