摘要
由于在两个实际受力阶段坡体与地梁间的相互作用机理不同,硬质岩体边坡预应力锚索地梁上的坡体压力应分为锚索张拉阶段和工作阶段分别分析,提出在锚索张拉阶段可利用弹性半无限体理论近似分析地梁下的坡体压力,而在工作阶段则可用极限平衡法近似解析地梁下的坡体压力,分别推导了具体的简化计算公式,得到了两阶段预应力锚索地梁下坡体压力的分布模式及其影响因素,实例计算结果表明,对于两阶段分别提出的简化分析方法是较为合理的。
In analysis of slope pressure on foundation beam with prestressed anchor-cable in hard rock slope projects,at the pulling anchor-cable stage and normal working stage,the analysis should be made separately due to different interaction mechanism between the beam and the slope at each stage.It is suggested that approximate calculation method of the pressure can be accepted by elastic semi-infinite body theory at pulling anchor-cable stage and by limit equilibrium method at normal working stage.The calculation formulas have been deducted in detail.So the slope pressure on the beam and its influence factors are obtained.It is shown by detailed analysis on a practical project that the given simple methods at each stage in the paper are reasonable.
出处
《地下空间与工程学报》
CSCD
北大核心
2010年第3期655-659,共5页
Chinese Journal of Underground Space and Engineering
基金
教育部博士点新教师基金(20070613016)
西南交通大学校基金(2007B12)
关键词
硬质岩体边坡
预应力锚索地梁
坡体压力
hard rock slope
foundation beam with prestressed anchor-cable
slope pressure
