基于落球法测试土基压实度的技术研究  

Research on the Technology of Soil Foundation Compactness Testing Based on Falling Ball Method

作　　者：侯建军 闫涛 杨森[1] 刘军[1] 李科 HOU Jianjun;YAN Tao;YANG Sen;LIU Jun;LI Ke(Sinohydro Bureau 7 Co.,LTD.,Chengdu Sichuan 610213;Sichuan Shengtuo Testing Technology Co.,Ltd.,Chengdu Sichuan 610045)

机构地区：[1]中国水利水电第七工程局有限公司,四川成都610213 [2]四川升拓检测技术股份有限公司,四川成都610045

出　　处：《四川水力发电》2024年第6期6-8,18,共4页Sichuan Hydropower

基　　金：中国水利水电第七工程局有限公司科研项目:《无黏性土基压实度快速无损检测方法研究》。项目编号:2022-803-54-39。

摘　　要：对于施工现场土基压实度的检测方法,最常用的是灌砂法和灌水法,但这两种方法均属于破坏检测,费时、费力、代表性差。阐述了对落球法测试土基压实度适应性进行的研究。采用落球式回弹仪对土基压实度进行检测,并将其与灌砂法得到的数据进行对比,结果表明:相较于灌砂法,落球法获得的数据误差在0.4%以内、变异系数为0.006~0.008。由此可知采用落球法测试土基压实度可靠、稳定性好、离散性小。Sand filling method and water filling method are the most commonly used methods for testing the compactness of soil foundation at the construction site,but these two methods belong to failure detection,which are time-consuming,laborious and poorly representative.This paper studies the adaptability of the falling ball method to detect the compactness of the soil foundation,uses the falling ball rebound instrument to detect the compactness of the soil foundation,and compares it with the data obtained by the sand filling method.The results show that compared with the sand filling method,the data error obtained by the falling ball method is less than 0.4%,and the coefficient of variation is 0.006-0.008,thus it can be known that the falling ball method is reliable,stable and discrete.

关 键 词：落球法 灌砂法 土基压实度 

分 类 号：TV7[水利工程—水利水电工程] TV522TV523