土钉支护加固机理的数值分析
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摘要
通过对土钉与周围土体的相互作用进行有限元数值分析,以定量模拟出土钉在土中发挥转动刚度来加固周围土的作用,分析得出不同位置处土体的加固程度,表明土钉对土体的侧向约束作用显著,证明了用土钉支护来减少土体横向位移,防止开挖面的位移和边坡向开挖面坍塌是合理的。
The numerical analysis of finite element method is used to simulate the interaction both the soil and the nail in the soil-nailed support. By this analysis, the soil strength in different positions is acquired, in which it seems that the function of the soil-nailed support is to reduce the lateral restraint mainly. Hence it is reasonable that the soil-nailed support is used to reduce the lateral displacement in soil and prevents the cut-section's displacement and the slope from collapsing toward cut-section.
The numerical analysis of finite element method is used to simulate the interaction both the soil and the nail in the soil-nailed support. By this analysis, the soil strength in different positions is acquired, in which it seems that the function of the soil-nailed support is to reduce the lateral restraint mainly. Hence it is reasonable that the soil-nailed support is used to reduce the lateral displacement in soil and prevents the cut-section's displacement and the slope from collapsing toward cut-section.
引文
[1]程良奎等.岩土加固实用技术[M].北京:地震出版社,1994
[2]朱伯芳.有限单元法原理与应用[M].北京:中国水利水电出版社,1998
[3]郑颖人等.岩土塑性力学原理[M].北京:中国建筑工业出版社,2002
[4]蔡美峰.岩石力学与工程[M].北京:科学出版社,2002
[5]龚晓南.土钉和复合土钉支护若干问题[J].土木工程学报,2003,36(10)
[6]宋二祥等.复合土钉支护变形特性的有限元分析[J].建筑施工,2001,23
[7]曾宪明等.土钉支护设计与施工手册[M].北京:中国建筑工业出版社,2000
[8]中国岩土锚固工程协会.岩土锚固工程技术[M].北京:人民交通出版社,1998
[2]朱伯芳.有限单元法原理与应用[M].北京:中国水利水电出版社,1998
[3]郑颖人等.岩土塑性力学原理[M].北京:中国建筑工业出版社,2002
[4]蔡美峰.岩石力学与工程[M].北京:科学出版社,2002
[5]龚晓南.土钉和复合土钉支护若干问题[J].土木工程学报,2003,36(10)
[6]宋二祥等.复合土钉支护变形特性的有限元分析[J].建筑施工,2001,23
[7]曾宪明等.土钉支护设计与施工手册[M].北京:中国建筑工业出版社,2000
[8]中国岩土锚固工程协会.岩土锚固工程技术[M].北京:人民交通出版社,1998
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