城市大型工程场地岩土力学参数统计特征的分析与检验  

Analysis and Test on Statistical Characteristics of Geotechnical Mechanical Parameters in Large Urban Engineering Site

作　　者：王全贤 郭彩霞 王熠琛 蔡志勇 吕金彪 Wang Quanxian;Guo Caixia;Wang Yichen;Cai Zhiyong;Lü Jinbiao(Beijing Municipal Construction Group Co.,Ltd.,Beijing 100048,China;Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京市政建设集团有限责任公司,北京100048 [2]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124

出　　处：《市政技术》2024年第10期71-77,共7页Journal of Municipal Technology

基　　金：国家自然科学基金重点项目(52130905);国家自然科学基金面上项目(52278385)。

摘　　要：在城市大型工程场地中,岩土力学参数的统计特征具有重要的工程意义。为了合理确定其统计特征,需要明确2个关键问题:1)以什么原则采集岩土样本,其力学参数才具有科学的统计意义;2)如何检验岩土力学参数的统计意义与统计分布模型。通过深入结合统计理论与统计试验法,得到以下结论:在实际工程中,岩土勘察得到的位于同一地层中的岩土体理论上应满足随机样本的要求,其力学参数才具有科学的统计意义;在实际工程中,应利用游程检验和卡方检验分别验证岩土力学参数的统计意义与统计分布模型。依据此结论,提出了岩土力学参数统计特征的分析检验流程,为相关工作的开展提供了科学参考。The statistical characteristics of the geotechnical mechanical parameters are significant in a large urban engineering site.Two basic issues must be explicated to ascertain the statistical characteristics.1) What principles of geotechnical samples collection has scientific statistical significance for mechanical parameters;2) How to test the statistical significance and distribution model of geotechnical mechanical parameters.By employing statistical theory and statistical experiment methods,some conclusions were achieved that the geotechnical samples collected in the identical stratum by geotechnical investigations conform to random sample normally,and the mechanical parameters have scientific statistical significance;In actual engineering,the statistical significance and distribution model should be verified by run test and χ^(2) test,respectively.According to the conclusion,the test procedure on the statistical characteristics of the mechanical parameters was proposed,which is a guideline for the practical construction.

关 键 词：工程场地 岩土力学参数 统计特征 游程检验 卡方检验 

分 类 号：TU452[建筑科学—岩土工程]