桥梁基础挖方计算方法探讨

RESEARCH ON CALCULATION METHOD OF EXCAVATION AMOUNT OF BRIDGE FOUNDATION

本文针对山区铁路桥梁,利用墩台纵横向的实际勘测数据,通过假设墩台附近范围内地形纵横向变化的连续性建立斗形空间几何体计算模型,根据简单多边形面积公式及拟台体体积公式,提出了墩台基础挖方量的计算方法并通过程序实现。

Research has been done to get foundations＇ excavation amount of mountain railway bridges. It establishes the computing model of funnel-shaped tridimensional solid using the actual measured datum of both longitudinal and transversal profiles on the assumption that the topographical changes nearby the bridge piers and abutments are continuous. According to the area formula of simple polygon and volume formula of platform, the calculation method of foundations＇ excavation amount has been put forward and realized by program.