摘要
目前，双排桩在滑坡治理中已有采用，在设计计算中，一般采取一些缺乏试验验证的假定（如假定前排桩承担的滑坡推力与它承受水平荷载的能力相当）进行治理工程防护设计。但对于滑坡推力在两排桩之间如何分配，相关的研究报道还比较少。从理论上分析了双排桩的结构和受力特点，并结合工程实例，对双排桩之间的滑坡推力分配进行了应用研究。研究结果表明，双排桩可视为受水平力作用的刚架，并以后排桩桩后土体作为研究对象，运用结构力学的有关理论，推导了相应的弯矩计算公式，探讨了不同分布形式的滑坡推力在两排桩上的分配问题。工程实例表明，计算结果符合理论分析得出的规律。
The technique of double-row anti-slide piles has been applied in landslide control works nowadays. In practical engineering, some hypotheses are adopted for design. However, the thrust-distribution in double-row piles needs more attention and urgent studies. The structural and mechanical properties of double-row piles are studied. The double-row piles structure can be regarded as rigid frame bearing horizontal pressure. This calculation model takes the back soil of back pile as the research object. The Force method of structural mechanics is employed to calculate the rigid frame. By mechanical analysis, the relevant formula is deduced. Two types of slide thrust have been discussed respectively. A case study in Hongshibao Landslide which lies in the Badong area in the Three Gorges Reservoir is presented finally, the result of which is in agreement with theory analysis.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第A01期4866-4871,共6页
Chinese Journal of Rock Mechanics and Engineering
关键词
岩土力学
滑坡
双排抗滑桩
推力分配
受力分析
slope engineering
double-rowanti-slidepiles
thrust-distribution
mechanical analysis
