【摘要】 桩间距是抗滑桩设计的一个重要指标,现行的工程设计计算中尚未考虑土拱效应的影响。在分析了土拱效应形成机理的基础上,引入了拱轴线成抛物线的假定,依据抗滑桩被动受力的特点,假设拱轴线起点切线的倾角β=π/4+/2,综合考虑土拱静力平衡条件和强度条件,建立出合理的桩间距计算方法,得出了一个符合工程实际的半经验公式,使设计计算更为合理。更多还原

【Abstract】 Pile spacing is an important index during the design of anti-slide piles;however,present en?gineering design methods have not taken soil arch effect into account yet.this paper analyses the generating mechanism of soil arch effect,introduces the assumption that arch axis is parabolic.According to the passive?ly loaded characteristic of anti-slide piles,supposing that the inclination angle of tangent line at the starting point of arch axis equals to π/4+φ?/2,taking account for the static equilibrium condition of soil arch and strength condition,a reasonable calculation method is set up for pile spacing,a semiempirical formula which corresponds to actual engineering practice is also obtained,which enables the design calculation for pile spac?ing more reasonable.更多还原