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由于用m法计算桥梁桩基比过去的K法接近实际,所以获得迅速推广和日趋完善,并在矿井工程中亦开始应用。《铁路标准设计通讯》73年第1期“关于桥梁基础采用m法计算土壤弹性抗力的几个问题”(以下简称“几个问题”)一文中对桩基的纵向稳定做了初次分析。本文用能量法讨论嵌固桩的计算长度,所得公式介绍如下。设桩尖固定在岩石内,桩顶有轴向力N、弯矩M和水平力Q作用(见下图)。由弹性稳
Because the m method is used to calculate the bridge pile foundation than the past K method is close to reality, so it has been rapidly popularized and matured day by day, and also started to be applied in mine engineering. The longitudinal analysis of the longitudinal stability of pile foundations was first analyzed in “Railway Standard Design and Communication” No.173 of “Several Problems on Calculating Soil Elastic Resilience of Bridge Foundation by Means” (hereinafter referred to as “Several Problems”). In this paper, we discuss the calculation of the length of the embedded pile by the energy method, the formula is as follows. Set the tip of the pile fixed in the rock, pile axial force N, bending moment M and horizontal force Q (see below). Stable by flexibility