中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2008, Vol. 27 ›› Issue (3): 420-423,445.

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危岩主控结构面的冻胀力计算公式研究

赵鹏, 唐红梅   

  1. 重庆交通大学 岩土工程研究所, 重庆 400074
  • 收稿日期:2007-05-15 修回日期:2007-09-07 出版日期:2008-06-20 发布日期:2016-11-14
  • 作者简介:赵鹏(1983-),男,山东泰安人,硕士研究生,主要从事三峡库区危岩发育机理的研究工作。E-mail:zha_openg1002@163.com。
  • 基金资助:
    国家自然科学基金资助(50678182)

Research on the Damage Mechanism due to Freezing and Thawing Force of Control Fissure in Perilous Rock

ZHAO Peng, TANG Hong-mei   

  1. Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2007-05-15 Revised:2007-09-07 Online:2008-06-20 Published:2016-11-14

摘要: 主控结构面的形成和扩展是研究危岩发育机理的核心。基于损伤力学、断裂力学、弹性力学等理论,对冻融循环条件下主控结构面的产生和扩展进行了研究。提出了主控结构面损伤扩展的条件,建立了冻结状态下作用在主控结构面上的冻胀力计算公式,通过工程实例给出了公式的运用方法,分析了影响主控结构面冻胀力大小的因素,为危岩发育机理的深入研究奠定了理论基础。

关键词: 危岩, 主控结构面, 冻融循环, 冻胀力, 计算方法

Abstract: The formation and expanding of control fissure is the core of mechanism for perilous rock to develop.Based on the theory of damage mechanics,fracture mechanics and elastic mechanics,the formation and expanding of control fissure were researched under the condition of cycle of freezing and thawing.The precondition of control fissure to be damaged and expanded was put forward,and the calculation formulation of frost force on control fissure under freezing condition was established.The applicative method of the calculation formulation has been introduced through an engineering example,and several factors influencing the frost force on control fissure were analyzed.A theoretic foundation for deeper research on the mechanism of perilous rock to develop is established.

Key words: perilous rock, control fissure, cycle of freezing and thawing, frost force, calculation methods

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