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针对抗滑群桩设计理论方面存在的问题,即荷载传递及滑坡推力分配的不确定性,基于极限分析的上限定理,给出了一种抗滑群桩的设计方法,即人为增大第一排抗滑桩的桩间距,并按极限土压力公式设计,作用在第二排抗滑桩上的荷载则按照上限定理给出。根据上述思想,并结合滑坡能量安全系数的定义和多块体体系速度场计算方法,提出了抗滑群桩的一种设计理论。
Aiming at the problems existing in design theory of anti-sliding group pile, that is, the uncertainty of load transfer and landslide thrust distribution, based on the upper bound theorem of limit analysis, a design method of anti-sliding group pile is proposed, The pile spacing of the anti-slide piles is designed according to the formula of the ultimate earth pressure, and the load acting on the second row anti-slide piles is given according to the upper limit theorem. According to the above thought, combined with the definition of landslide energy safety coefficient and the calculation method of multi-block system velocity field, a design theory of anti-sliding group pile is proposed.