浆砌片石拱形骨架护坡数值模拟分析  

Analysis on Numerical Simulation of Mortar Rubble Arch Framework for Slope Protection Structure

作　　者：聂忆华[1] 李丁玲[1] 彭立[2] 肖燕[2] 徐阳[2] 

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201 [2]湖南省交通规划勘察设计院,长沙410008

出　　处：《路基工程》2014年第4期82-84,89,共4页Subgrade Engineering

基　　金：湖南省交通厅科技计划项目(21104);湖南省自然科学基金项目(11JJ4037)

摘　　要：根据工程实体尺寸建立浆砌片石骨架护坡数值模型,计算拱形骨架护坡在竖向加载下的位移与应力变化,探讨加载下浆砌片石骨架结构的力学响应分布规律,并与缩小模型测试值进行对比。数值分析与室内试验结果分析表明:拱形骨架护坡各拱圈的拱脚处为受力不利位置,各点总位移随离坡顶斜距的增加而非线性减小,其中坡面中间部分有横向外侧凸起变形现象。According to the dimensions of engineering entity, the numerical model of mortar rubble arch framework for slope protection was built to calculate the displacement and stress change of the framework under vertical load, thus explore the law of the mechanical response distribution in such loaded framework, and then compare with the test results from the miniature model. The results of the numerical analysis and laboratory test show that, at the springing of arch rings of the framework, they are the positions in a bad state to bear forces ; and the total displacement of the points decreases nonlinearly with increase of the slope distance away from the slope crest, wherein transverse lateral bumping deformation arises in the middle part of the slope surface.

关 键 词：边坡防护 拱形骨架 数值模型 力学响应 

分 类 号：U417.12[交通运输工程—道路与铁道工程]