论文部分内容阅读
针对输电钢管塔采用传统锻造法兰和新型内外双层锻造法兰两种节点连接形式,选取法兰盘厚度、螺栓个数、螺栓孔中心到法兰外缘的距离及螺栓孔中心到法兰颈根的距离4个计算参数,利用Ansys软件建立了输电钢管塔法兰节点连接有限元模型,研究了在轴向拉力作用下两种锻造法兰节点的破坏模式。结果表明,传统锻造法兰有螺栓弯曲屈服、法兰颈变坡段与直坡段接触点屈服两种破坏形式;新型内外双层锻造法兰有法兰颈根屈服、钢管拉伸屈服两种破坏形式,同时法兰盘厚度、螺栓个数均小于传统锻造法兰。
For the steel tube tower using traditional forging flange and a new type of internal and external double forging flange connection of two forms, select the flange thickness, the number of bolts, bolt hole center to the flange of the distance and the center of the flange to the flange The distance between the root and the neck were calculated. Ansys software was used to establish the finite element model of flange joint of transmission pipe tower. The failure modes of two kinds of forged flange joints under axial tension were studied. The results show that the traditional forged flange has yield bending of the bolt, the contact point of the flange neck slope section and the straight slope section yields two kinds of failure modes; the new type inner and outer double-layer forging flanges have the flange neck yielding and the steel tube tensile yielding two kinds Damage form, at the same time flange thickness, the number of bolts are less than the traditional forged flange.