摘要
文章利用有限差分程序FLAC2D6.0,从单元屈服状态和剪应变增量、应力场、动力稳定性等方面对比分析了自然边坡和锚固边坡在地震作用下的动力响应情况。结果表明:在地震作用下,土坡产生不可恢复的累积变形,其大小与输入的地震波峰值有关,而锚固边坡较自然边坡有更好的延性;锚固系统能在一定程度上限制坡顶拉破坏的产生和很好的控制坡脚剪切破坏的发展;锚杆轴力沿全长呈不均匀分布,且在滑移面附近变化幅度最大。
Through finite difference program FLAC2D6.0,the article analyzes the dynamic response of natural side slope and earthquake side slope from perspectives of unit yield state,shear stress increment,stress field and dynamic stability.The result shows that under the effect of earthquake,soil slope has irreversible deformation and the degree is associat-ed with seismic wave value,while anchoring slope has better extensibility and can limit the damage in slope top and bottom.The axial forces distributed asymmetrically,and has big-gest variance around slide plane.
出处
《西部交通科技》
2011年第10期33-38,共6页
Western China Communications Science & Technology
关键词
锚固系统
地震边坡
动力响应
研究
Anchorage system
Earthquake side slope
Dynamic response
Study
