单管塔插接连接节点抗弯刚度的试验研究*
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（1 同济大学建筑工程系, 上海 200092； 2 维蒙特工业（中国）有限公司, 上海 200000）[摘要]插接节点是单管钢塔的一种常见的塔身钢管连接形式。本文通过5个插接节点的足尺模型抗弯静力试验，研究了插接节点轴向压力、截面形状、插接长度、插接段内外钢管贴合率等因素对节点弹性抗弯刚度的影响以及加载至破坏过程中的刚度变化特征，并与有限元计算分析结果进行了对比。结果表明实际的插接节点抗弯刚度弱于连续钢管，应在工程设计中予以考虑。[关键词]单管塔; 插接连接; 抗弯刚度; 插接长度中图分类号：TU398.7 文献标志吗：A 文章编号：1002-848X(2013)S1-0431-05Luo Lie1, Tu Wanglong1, Wen Haoran1, Li Juan2（1 Department of Building Engineering, Tongji University，Shanghai 200092, Chian2 Valmont Industries (China),Inc.,Shanghai 200092, Chian）Abstract:Slip joint connections have been used very commonly in steel monopoles. Five prototype slip joints subjected in static loads were tested in this paper. The effects of axial force, section shape, overlap length and contact state between the inner and outer tubes on the elastic flexural rigidity of the joints were researched by the analysis of experimental data and its comparison with the results of the finite element analysis. In the meanwhile, the variation characteristic of flexural rigidity from the elastic flexural stage to the failure stage was analyzed. The conclusion shows that the elastic flexural rigidity of slip joint is weaker than the continuous tube.Keywords:monopole; slip joint connections; flexural rigidity; overlap length
