重型超重型动力触探锤击数修正系数外延研究  

Study on extension and polynomial fitting of correction factors of heavy dynamic penetration and extra heavy dynamic penetration

作　　者：李会中[1,2,3,4] 郭飞[3] 潘玉珍[1,2] 谢实宇 肖云华[1,2] 

机构地区：[1]长江勘测规划设计研究有限责任公司,湖北武汉430010 [2]长江三峡勘测研究院有限公司,湖北武汉430074 [3]河海大学地球科学与工程学院,江苏南京210098 [4]三峡大学土木与建筑学院,湖北宜昌443002

出　　处：《人民长江》2015年第1期30-35,共6页Yangtze River

基　　金：水利部公益性行业科研专项经费项目(201201039)

摘　　要：西部地区河床覆盖层深厚且成因杂、结构散、颗粒粗,勘探取样与原位测试是水电工程地质勘察中常遇的技术难题。利用麦夸特法与通用全局优化法相结合的优化算法,基于1st Opt数学优化分析软件,对现行规范中重型、超重型动力触探锤击数修正系数进行了拟合研究。给出了双因子(杆长、实测锤击数)动力触探锤击数修正系数拟合函数与外延修正系数,并应用于金沙江乌东德水电站。研究成果不仅扩展了动力触探应用范围,而且为测试数据批量化计算与查表内插处理提供了便利,可供河床深厚覆盖层地区水电工程勘察参考使用。Exploratory sampling and in-situ test are the technical challenges frequently encountered in the geotechnical inves-tigation of hydropower projects in west China where the riverbed overburden is thick with complex genesis, loose structure and coarse particles. Based on a optimization algorithm that combines Levenberg-Marquardt algorithm and general global optimiza-tion, this paper studies the fitting of correction factors of heavy and extra heavy dynamic penetration in executing standard by a optimization software of First Optimization （1stOpt）, and the correction factors fitting function as well as the extended correction coefficients of two-factor （ rod length and actual count ） of dynamic penetration are calculated, which was applied to Wudongde Hydropower Station on Jinsha River. The study expanded the application range of dynamic penetration in current standard and fa-cilitated the mass calculation and interpolation of measured data.

关 键 词：动力触探 修正系数 麦夸特法 全局优化法 非线性拟合 

分 类 号：P642[天文地球—工程地质学]