3种特殊土物理力学性质指标统计分析

doi:10.13278/j.cnki.jjuese.20210005

吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (5): 1356-1365.doi: 10.13278/j.cnki.jjuese.20210005

3种特殊土物理力学性质指标统计分析

乔峰¹, 薄景山^1,2, 常晁瑜¹, 李琪², 杨元敏¹

1. 防灾科技学院地质工程学院, 河北三河 065201;
2. 中国地震局工程力学研究所/中国地震局地震工程与工程振动重点实验室, 哈尔滨 150080

收稿日期:2021-01-10 出版日期:2021-09-26 发布日期:2021-09-29
通讯作者: 薄景山(1957-),男,教授,博士生导师,主要从事岩土工程抗震研究,E-mail:bojingshan@163.com E-mail:bojingshan@163.com
作者简介:乔峰(1990-),男,讲师,主要从事岩土工程抗震研究,E-mail:qiaofengCT@163.com
基金资助:
国家自然科学基金重大项目（U1939209）；中央高校基本科研业务费专项资金创新团队资助计划项目（ZY20160101）；中国地震局建筑物破坏机理与防御重点实验室开放基金项目（FZ201101）；中国地震局地震工程与工程振动重点实验室重点专项（2020EEEVL0201）；中国地震局重大政策理论与实践问题研究课题（CEAZY2020JZ07）

Statistical Analysis of Physical and Mechanical Properties of Three Special Soils

Qiao Feng¹, Bo Jingshan^1,2, Chang Chaoyu¹, Li Qi², Yang Yuanmin¹

1. Institute of Disaster Prevention, Institute of Geological Engineering, Sanhe 065201, Hebei, China;
2. Institute of Engineering Mechanics/Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Harbin 150080, China

Received:2021-01-10 Online:2021-09-26 Published:2021-09-29
Supported by:
Supported by the National Natural Science Foundation of China (U1939209), the Central University Basic Research Business Terminal Special Fund Innovation Team Funding Project (ZY20160101), the Open Fund Project of Key Laboratory of Building Collapse Mechanism and Prevention of China Earthquake Administration (FZ201101), the Key Project of Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration (2020EEEVL0201) and the Research Subject of Major Policy Theory and Practice of China Earthquake Administration (CEAZY2020JZ07)

摘要/Abstract

摘要： 常规物理力学指标可以良好反映土的工程性质。收集全国范围内软土、黄土和红土的相关专著、科技论文和地震安全性评价报告，统计得出3种特殊土各项物理力学指标的范围、平均值和变异系数，通过对各项物理力学指标间的相关性分析，对3种特殊土的工程特性进行了研究。对比结果发现：3种特殊土物理性质的变异系数总体较小、较为稳定，而力学性质的变异系数变化较大、离散程度较高；3种特殊土各项物理力学性质指标间存在相关性，或呈线性关系，或呈带状变化，同类指标软土和红土的相关系数高于黄土。通过回归拟合方法给出了|r|∈[0.5，1.0]的拟合公式，利用线性关系检验方法对公式的精度和准确性进行检验，结果表明：本文给出的拟合公式F>F_0.05，回归效果较为显著，便于工程应用。

关键词: 特殊土, 工程特性, 数据库, 统计分析

Abstract: Conventional physical and mechanical indicators can well reflect the engineering properties of soil. Through collecting relevant monographs, scientific papers, and seismic safety evaluation reports on soft soil, loess and red soil national widely, the statistics of the range, average value, and coefficient of variation of various physical and mechanical indicators of the three special soils were obtained. Based on the correlation analysis between the indicators, the engineering characteristics of the three special soils were studied. The comparison results show that the coefficient of variation of the physical properties of the three special soils is generally small and relatively stable, while the coefficient of variation of the mechanical properties varies greatly and discretely; There is a correlation between the physical and mechanical properties of the three special soils, either in a linear, or a belt-like change; The correlation coefficients of similar indicators of soft soil and red soil are higher than that of loess. The fitting formula of|r|∈[0.5, 1.0] is given by the regression fitting method used to test the precision and accuracy of the formula based on the linear relationship test. The results show that the F values of the fitting formula given in this paper are all greater than F_0.05,it can be seen that the regression effect is more obvious, which is convenient for engineering application.

Key words: special soil, engineering characteristics, database, statistical analysis

中图分类号:

TU435

乔峰, 薄景山, 常晁瑜, 李琪, 杨元敏. 3种特殊土物理力学性质指标统计分析[J]. 吉林大学学报(地球科学版), 2021, 51(5): 1356-1365.

Qiao Feng, Bo Jingshan, Chang Chaoyu, Li Qi, Yang Yuanmin. Statistical Analysis of Physical and Mechanical Properties of Three Special Soils[J]. Journal of Jilin University(Earth Science Edition), 2021, 51(5): 1356-1365.

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3种特殊土物理力学性质指标统计分析

Statistical Analysis of Physical and Mechanical Properties of Three Special Soils

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