基于不同裂隙水压力分布的楔形体位移分析  

Displacement Analysis of Rock Wedge Based on Different Fissure Water Pressure Distribution

作　　者：曾彪 冯登 ZENG Biao;FENG Deng(Key Laboratory for Hydraulic and Waterway Engineering of Ministry of Education,Chongqing Jiaotong University, Chongqing 400074,China;Hehai College,Chongqing Jiaotong University,Chongqing 400074,China;China Railway Siyuan Survey and Design Group Co.Ltd.,Wuhan Hubei 430063,China)

机构地区：[1]重庆交通大学水利水运工程教育部重点实验室,重庆400074 [2]重庆交通大学河海学院,重庆400074 [3]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《铁道建筑》2018年第10期89-93,共5页Railway Engineering

基　　金：国家自然科学基金(51408084)

摘　　要：楔形体2个结构面的产状、抗剪强度参数等存在差异,对楔形体的抗滑作用也不同。Hoek所提出的楔形体水压力分布形式,在很多情况下分析稳定性时是偏于不安全的。本文针对不同裂隙形态的楔形体,提出了不同的水压力分布规律,并对不同水压力分布规律下的楔形体进行稳定性分析。根据楔形体结构面的受力特点,提出了楔形体权重位移求解法:求解楔形体结构面的权重参数,并根据单结构面的最大剪切位移求解出结构面交线的最大剪切位移,进而设定安全系数推导出楔形体实际权重位移。Because of the difference in occurrence and shear strength parameters of two structural planes of rock wedges,the anti-sliding effect for the rock wedge is different.The water pressure distribution of rock wedge proposed by Hoek was unsafe to analyze the stability in some circumstances.Different water pressure distribution laws were proposed according to rock wedges with different fissure shapes,stability analysis of rock wedges was made under different water pressure distribution laws.According to the stress characteristics of the rock wedge structure plane,the weight displacement solution of rock wedge was put forward,weight parameters of rock wedge structure plane was derived,the maximum shear displacement of the intersection line of the structural plane was calculated according to the maximum shear displacement of the single structural plane,then the safety factor was set,and the actual weight displacement of the rock wedge was deduced.

关 键 词：边坡工程 楔形体 理论分析 权重位移 稳定性分析 裂隙水压力 

分 类 号：TU432[建筑科学—岩土工程]