基于桩土共同作用下的干煤棚桩基有限元分析

Finite Element Analysis of Pile Foundation Based on Interaction of Piles and Soils for Dry Coal Shed

干煤棚是火力发电厂中存储煤的一种大型工业建筑,由于需要满足其内部斗轮机作业空间和储煤量,其结构跨度大,高度高。在煤场荷载和上部结构的共同作用下,干煤棚一般采用桩基基础。利用ANSYS有限元软件建立桩土整体模型,分析桩基在上部结构荷载和煤堆荷载作用下的桩-土结构的应力与应变,对比分析了桩-土结构的沉降曲线及桩身内力规律,为今后类似工程的桩基设计提供了重要的参考价值。

Dry coal shed used for storing coal is a large industrial building in the thermal power plant and in order to meet the need of its reclaimer＇s internal work space and the coal storage, its span is designed big and height is high. Pile foundation is usually adopted to bear the coal load and the upper structure load. In this paper, ANSYS finite element software is adopted to establish the overall model of piles and soil, in or- der to analyze the pile-soil structure＇s stress and strain under the upper structure load and coal load. The analysis of the settlement curve of pile-soil and the law of pile body internal force is also completed to pro- vides an important reference value to the design of oile foundation the future similar project.