岩土介质动静力学参数与介质物理组构参数之间的关系
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摘要
岩土体是地质历史的产物,有着特定的物质组分和结构构造,从而表现出复杂的工程力学性质。为研究岩土介质动、静力学参数与岩土介质物理组构参数三者的关系,文章结合工程岩土体勘察评价,对岩土介质进行了一系列物理力学测试和波动测试,取得了一定量的测试数据。分析中特别关注了岩土介质的弹性波速与介质密度之间的关系。研究发现,岩样和土样波速与密度测试值在波速-密度参数空间中展现出了几种相对性:整体有序与局部混沌的相对性、分布域位置和结构的确定与域内参数随机分布的相对性、在某一分布域内整体样本无序与各类子样本有序的相对性。把握这几种相对性对于岩土介质的理论研究和工程应用都十分有意义。
As a product of geological history, rock and soil media process their special compositions and fabric structures so that their engineering behavior is very complicated. In order to study the relationships between the static parameters and the dynamic parameters, and physical fabric parameters, a series of physical and mechanical tests, as well as elastic wave tests were carried out in combination with engineering estimation of rock and soil media. Analysis of test data revealed that there are several kinds of relativity pertaining to the relationship between the elastic wave velocities and the densities of rock and soil media, i. e. , the relativity between sequence on the whole and chaos in part; the certainty in the position and structure of a local distribution realm and the random distribution in the realm; disorder on the whole in a local distribution realm and the sequence of a certain subordinate member in the realm.
As a product of geological history, rock and soil media process their special compositions and fabric structures so that their engineering behavior is very complicated. In order to study the relationships between the static parameters and the dynamic parameters, and physical fabric parameters, a series of physical and mechanical tests, as well as elastic wave tests were carried out in combination with engineering estimation of rock and soil media. Analysis of test data revealed that there are several kinds of relativity pertaining to the relationship between the elastic wave velocities and the densities of rock and soil media, i. e. , the relativity between sequence on the whole and chaos in part; the certainty in the position and structure of a local distribution realm and the random distribution in the realm; disorder on the whole in a local distribution realm and the sequence of a certain subordinate member in the realm.
引文
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[4] 单钰铭,刘维国．地层条件下岩石动静力学参数的实验研究[J]．成都理工学院学报,2000,27(3):249-254
[5] 蔡新滨．岩土体动静力学参数测试及相互关系研究[D]．北京:中国地质大学(北京),2002
[6]DBJ 01-501-92．北京地区建筑地基基础勘察设计规范[S]．北京:中国建筑工业出版社,1992
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[8]刘盛尔,杨玉岷,胡绍龙．岩石受力状态对弹性波传播速度影响的初步研究[J]．中国煤田地质,1996,3(8):48-51
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[10] 黄润生．混沌及其应用[M]．武汉:武汉大学出版社,2000
[2] De Alba, Baldwin, Janoo, et al. Elastic-Wave Velocities and Liquefaction Potential[J]. Geotechnical Testing Journal, 1984, 7(2): 77-87
[3] Paul Srachan. Alternative Test Method for Ensuring Full Saturation in Triaxial Samples[J]. Geotechnical Testing Journal, 1985, 8(1): 43-46
[4] 单钰铭,刘维国．地层条件下岩石动静力学参数的实验研究[J]．成都理工学院学报,2000,27(3):249-254
[5] 蔡新滨．岩土体动静力学参数测试及相互关系研究[D]．北京:中国地质大学(北京),2002
[6]DBJ 01-501-92．北京地区建筑地基基础勘察设计规范[S]．北京:中国建筑工业出版社,1992
[7] 丁梧秀．岩石(体)弹性波波速与应力关系新探讨[J]．地质灾害与环境保护,1997,8(3):43-47
[8]刘盛尔,杨玉岷,胡绍龙．岩石受力状态对弹性波传播速度影响的初步研究[J]．中国煤田地质,1996,3(8):48-51
[9] 龙运佳,梁一德．近代工程动力学-随机、混沌[M]．北京:科学出版社,1998
[10] 黄润生．混沌及其应用[M]．武汉:武汉大学出版社,2000
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