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《铁路标准设计通讯》1973年第2期“铁路桥梁高桩承台钻(挖)孔灌注桩基础设计算例”一文(以下简称“算例”一文)中,提出了用无量纲系数计算桩柱基础的简化方法,不但使计算工作量显著减少,还可使计算结果的精度提高,这对“m法”的推广和应用是十分方便有利的。经过学习,感到该文中某些计算公式及计算过程还可作进一步的简化。一、简化的公式无论是单排架柱式墩或是群桩,当其每根桩顶处的内力N_i、M_i、Q_i及桩顶位移α、转角β算得后,每根桩就和单桩一样可按有关公式计算。桩顶处的内力与位移之间存在着一定的力学关系,即求得内力后可找有关公式算出位移,反之亦然。“算例”一文是先算出桩顶
In “Railway Standard Design and Communication”, No. 2, 1973, “An Example of Foundation Design of Pile Foundation Drilling (Excavation) Bored Piles for Railway Bridges” (Article of “Case Study”), The simplified method of column foundation not only reduces the computational workload significantly, but also improves the accuracy of the calculation results. This is very convenient for the popularization and application of “m method”. After studying, I feel that some of the calculation formulas and calculation processes in this paper can be further simplified. First, the simplified formula Whether it is a single-row column pier or group pile, when the internal forces at each pile top N_i, M_i, Q_i and pile top displacement α, β angle calculated, each pile and single pile The same can be calculated according to the formula. There is a certain mechanical relationship between internal force and displacement at the top of the pile, that is, after finding the internal force, it can find the relevant formula to calculate the displacement and vice versa. The “case study” is to calculate the pile top first