[1]蒋洋,郭建坤,王晓谋,等.基于双侧非对称破坏模式的临坡地基极限承载力分析[J].郑州大学学报(工学版),2019,40(03):16.
 Analysis on Ultimate Bearing Capacity of Ground Foundation Adjacent to Slope Based on Bilateral Asymmetry Failure Mode [J].Journal of Zhengzhou University (Engineering Science),2019,40(03):16.
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基于双侧非对称破坏模式的临坡地基极限承载力分析()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
40
期数:
2019年03期
页码:
16
栏目:
出版日期:
2019-04-30

文章信息/Info

Title:
Analysis on Ultimate Bearing Capacity of Ground Foundation Adjacent to Slope Based on Bilateral Asymmetry Failure Mode



作者:
蒋洋郭建坤王晓谋侯超群
文献标志码:
A
摘要:
在工程建设领域,经常需要把基础设置在临坡地基上,但在现行成果中,对临坡地基极限承载力的确定没有给出具体计算方法。建立双侧滑移破坏模型,将坡后土体强度进行折减,用发挥系数 来表征其强度。基于极限平衡法和叠加原理,求得三个承载力系数的表达式。基于极限分析法原理,推导出临坡地基极限承载力上限解。采用离心模型试验对理论分析结果进行验证,并研究了临坡地基在条形基础作用下的变形规律和破坏形态,以及基础宽度、荷载位置、基底接触条件等因素对于地基极限承载力的影响。研究表明:(1)发挥系数 随相对坡顶距呈规律性变化。(2)其他条件均相同时,基础宽度越大,临坡地基极限承载力越高。(3)基底接触条件对于临坡地基极限承载力具有显著影响。(4)离心模型试验结果与理论计算结果较为吻合,总体误差在10%以内。
Abstract:
Abstract: In the field of engineering construction, foundations were often placed adjacent to slopes. In the present research work, the evaluation of the maximum bearing capacity of slope foundations lacked a sufficientrate method. A bilateral asymmetry slip failure model for ground foundation adjacent to slope was develthe strength of soil on the side of flat ground was reduced and this is characterized by a mobilization factor. Base on limit equilibrium method and superposition principle, three bearing capacity factors were ex-pressed. The upper bound bearing capacity for ground foundation adjacent to slope was deduced based on limitanalysis approach. Centrifugal model tests were used to verify the theoretical analysis results; and thetion and failure characteristics of these foundations were studied. In addition the influence of variousuch as the contact conditions of the foundation, the location of the foundation, and the height of slope on themaximum bearing capacity of these foundation

更新日期/Last Update: 2019-04-16