一种新型材料电杆的设计研究

Design Study on the Telegraph Pole with New Material

活性粉末混凝土是一种新型的建筑材料,现已经进人实际应用阶段。本文介绍了活性粉末混凝土性能特点、讨论了它应用于电杆的可行性。根据现有规范对环形截面的普通混凝土电杆和活性粉末混凝土电杆进行设计,并利用有限元分析软件ANSYS对两种电杆进行分析计算。在ANSYS有限元分析过程中,采用柱坐标系,考虑了材料的非线性,计算模型是承受相同设计荷载的两根悬臂梁,建模时采用混凝土solid65单元,预应力钢筋采用空间杆单元link8,然后对电杆进行网格划分、加载求解。最后得到两种不同材料电杆的杆身挠度、自重、钢筋和混凝土的最大应力、含钢量的大小。对结果数据进行分析比较,从而得到活性粉末混凝土电杆在许多方面优越于普通混凝土电杆,它对工程应用具有一定的参考价值。

Reactive powder concrete is a kind of new construction material.It has been applied in practice.In this paper the performance characteristics of reactive powder concrete are simply introduced,at the same time,the feasibility of reactive powder concrete applying to telegraph pole is mainly discussed.The whole structural design process of a common concrete telegraph pole and a telegraph pole which is made of reactive powder concrete is done according to China existing criterion。 The finite element analysis software ANSYS is used to analyze and calculate the two kinds of concrete telegraph poles whose cross sections are orbicular.Global cylindrical coordinate systems are adopted and the material nonlinear is also taken into account during the course of the ANSYS finite element analysis,count models are two cantilever beams on the condition that they withstand the same design load,concrete element solid65 is used in the modeling,bar element link8 is used in prestressed steel.Then the model of telegraph poles is meshed,loaded and in the end count solutions are output.Some concrete data is gained such as deflection,weight of the telegraph poles,maximal stress of steel bar and concrete,steel content of the two different concrete telegraph poles.The data comparison has been analyzed,the result obviously indicates that the telegraph pole that is made of reactive powder concrete is superior to the common concrete telegraph pole in some aspects by the analysis and comparison of the last data.As far as the application of project is concerned,this will have definite referenced value.