APPLICATION OF GRAPHITE LUBRICATION FOR COLUMN BASE IN FREE STANDING STEEL STRUCTURE
APPLICATION OF GRAPHITE LUBRICATION FOR COLUMN BASE IN FREE STANDING STEEL STRUCTURE
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石墨润滑在自立式钢结构柱座上的应用
DOI：
10.3130/aijs.78.435
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Nakashima
中科院分区：
文献类型：
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作者：
R. Enokida;T. Nagae;M. Ikenaga;Michitaka Inami;M. Nakashima
独立式钢结构的柱基础不固定在基础上，有助于减少结构在大地震下的破坏。然而，普通钢柱基础的摩擦系数为0.8，高于普通钢结构的强度。本研究提出以石墨为润滑剂的钢柱基和石墨含量远高于钢的铸铁柱基来实现低摩擦柱基。进行了振动台试验，研究了摩擦特性。试验结果表明，铸铁柱基的摩擦系数为0.25，石墨润滑钢柱基的摩擦系数为0.20。代表这些摩擦特性的动力响应分析与试验结果具有合理的相关性。
Free standing steel structures, whose column bases are not fixed to a foundation, contribute to decrease damage to the structures under large earthquakes. However, the friction coefficient of normal steel column bases is 0.8 and too high to the strengths of normal steel structures. In this study, a steel column base lubricated by graphite well known as a lubricant and a cast iron column base containing much more graphite than steel are proposed to realize the low friction column base. Shaking table tests are conducted to investigate the friction characteristics. The tests show that the friction coefficient of the cast iron column base is 0.25 and that of the graphite lubricated steel column base is 0.20. Dynamic response analyses representing these friction characteristics show reasonable correlations with the test results.