[1]陈笑楠,张慧梅,周洪文.层状边坡岩体的屈曲和溃屈性态研究[J].水文地质工程地质,2020,47(2):141-147.[doi:10.16030/j.cnki.issn.1000-3665.201904019]
 CHEN Xiaonan,ZHANG Huimei,ZHOU Hongwen.Buckling and buckling failure behavior of bedding slope rock mass[J].Hydrogeology & Engineering Geology,2020,47(2):141-147.[doi:10.16030/j.cnki.issn.1000-3665.201904019]
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层状边坡岩体的屈曲和溃屈性态研究()
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《水文地质工程地质》[ISSN:1000-3665/CN:11-2202/P]

卷:
47卷
期数:
2020年2期
页码:
141-147
栏目:
工程地质
出版日期:
2020-03-15

文章信息/Info

Title:
Buckling and buckling failure behavior of bedding slope rock mass
文章编号:
1000-3665(2020)02-0141-07
作者:
陈笑楠1张慧梅1周洪文2
1.西安科技大学力学系,陕西 西安710054;2.上海应用技术大学城市建设与安全工程学院,上海201418
Author(s):
CHEN Xiaonan1 ZHANG Huimei1 ZHOU Hongwen2
1.Department of Mechanics, Xi’an University of Science & Technology, Xi’an, Shaanxi710054, China; 2.College of Urban Construction and Safety Engineering, Shanghai Institute of Technology, Shanghai201418, China
关键词:
层状边坡岩体屈曲溃屈分岔方程溃屈方程稳定性判据
Keywords:
bedding slope rock mass buckling buckling failure bifurcation equation buckling equation stability criteria
分类号:
TU457
DOI:
10.16030/j.cnki.issn.1000-3665.201904019
文献标志码:
A
摘要:
在对层状边坡岩体结构进行稳定性分析的过程中,屈曲和溃屈是两个主要问题。针对边坡岩体结构的赋存特点和分岔特性,以及研究方法仅采用线性理论和已有研究成果只停留在结构屈曲层面上的状况,文章应用初始后屈曲理论和突变理论探讨了岩体结构的屈曲性态和溃屈性态,给出了边坡岩体上部滑动段滑动的条件,得出了边坡岩体的分岔方程和溃屈方程,指出了分岔方程的适用条件和溃屈方程的适用范围,确定了边坡岩体后屈曲状态下溃屈破坏的下限,建立了岩体结构溃屈破坏的判据,并以雅砻江下游的霸王山边坡为例进行研究。结果表明:边坡岩体的赋存状况决定了其势函数的分岔集,从边坡的分岔集可衍生出结构在分岔状态下的分岔载荷和分岔方程;分岔方程表达了边坡岩体结构的屈曲状态,也表达了结构出现屈曲的准则;边坡岩体的赋存状况还决定了岩体结构溃屈破坏时岩体材料屈服的取值范围,而岩体结构溃屈破坏的上限或下限则取决于岩体材料的屈服极限。
Abstract:
The buckling and buckling failures are the two main problems in the process of stability analyses for bedding slope rock mass. In accordance with the occurrence characteristics and bifurcation properties of bedding slope rock mass and considering the situation that the research methods only use linear theory and the existing research results only stay at the level of structural buckling, this paper examines the buckling behavior and buckling failure behavior of bedding slope rock mass by using initial post-buckling theory and catastrophe theory, which gives the sliding conditions to an upper sliding section of bedding slope rock mass, derives its bifurcation equation and buckling failure equation, and points out the application conditions for the bifurcation equation and the application scope for the buckling failure equation. The lower limit of buckling failure in a state of post-buckling is determined, the criteria for buckling failure of bedding slope rock mass are built, and application with the example of the Bawang mountain slope located in the lower reaches of the Yalong River is presented. The results indicate that the occurrence situation for bedding slope rock mass determines its bifurcation set of potential function, the bifurcation load and bifurcation equation in a state of bifurcation can be derived from the bifurcation set for bedding slope rock mass. The solutions to the bifurcation equation describes the buckling state for bedding slope rock mass and also reflects the buckling criteria. The occurrence status for bedding slope rock mass also determines the scope of the material yield limit in a state of buckling failure, and either the upper or lower limit of buckling failure depends on the yield limit of rock mass material.

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备注/Memo

备注/Memo:
收稿日期: 2019-04-08; 修订日期: 2019-09-20
基金项目: 国家自然科学基金资助项目(11172232;51774231);陕西省重点科技创新团队计划资助项目(2014KCT-30);河南省交通运输科技计划项目(2018J11)
第一作者: 陈笑楠(1993-),女,硕士研究生,主要从事固体力学及结构稳定方面的研究。E-mail: 478737619@qq.com
更新日期/Last Update: 2020-03-15