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当前位置: 首页 > 文章 > 温度场与应力场耦合作用的喷砼边坡变形分析与控制 中南林业科技大学学报 2008,28 (2) 80-84
Position: Home > Articles > Deformation and Control Analysis of Sprayed-concrete Slope under The Interactive Effects of Temperature and Stress Fields Journal of Central South University of Forestry & Technology 2008,28 (2) 80-84

温度场与应力场耦合作用的喷砼边坡变形分析与控制

作  者：
谢忠球;周先雁;邓宗伟
单  位：
湖南城市学院;中南林业科技大学土木建筑与力学学院
关键词：
道路工程;边坡;喷射混凝土;温度应力;变形与控制分析
摘  要：
采用有限元的方法考虑地应力与温度应力的耦合作用,分析了在不同的边界温度作用下边坡应力场的交变特性和作用特点;边坡喷层面与岩层结合面处的剪应力的分布规律.指出在温度应力与地应力的耦合作用下,喷砼边坡坡顶与坡脚均为容易发生破坏的地方,通常坡顶的破坏形式为拉张破坏而坡脚则为剪切破坏.分析所得的温度场变化和变形与观测值变化规律一致,当温度变化剧烈时,边坡的防护必须考虑温度应力的影响.在分析喷射混凝土边坡变形机制的基础上,提出了相应控制措施,为优化工程设计、施工方案提供可靠的、定量的科学依据.
译  名：
Deformation and Control Analysis of Sprayed-concrete Slope under The Interactive Effects of Temperature and Stress Fields
作  者：
XIE Zhong-qiu1,ZHOU Xian-yan1,DENG Zong-wei2 (1.School of Civil Engineering and Mechanics,Architecture and Mechanics,Central South University of Forestry & Technology,Changsha 410004,Hunan;2.Hunan City University,Yiyang 413000,Hunan)
关键词：
road engineering;highway slope;sprayed-concrete;temperature stress;deformation and control analysis
摘  要：
This article,applying the finite element method to the study of the coupling action between the crustal stress and temperature stress,analyzes the horizontal displacement and vertical displacement of the sprayed concrete layer of slope and the distribution law of the shear stress at the interface of the sprayed concrete layer and rock mass under the actions of different boundary temperatures.It points out that both the top and toe of the sprayed concrete slope are easy to be destroyed under the coupling action of temperature stress and crustal stress. Usually,the destruction form of the top of slope reflects tension failure and the destruction form of the toe of slope reflects shear failure.The results indicate that the analyzed variations of the temperature field and the deformation at different times are of very good correlation to the measured value.The research result also shows that the influence of temperature stress must be considered for the slope protection when the temperature changes violently.Based on these analyses,relevant control methods are advanced and dependable and quantitatively scientific criterions for optimum engineering design and construction plan are provided.

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