| 非均布高温钢结构梁单元切线刚度方程 |
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| 引用本文： | 李国强,蒋首超.非均布高温钢结构梁单元切线刚度方程[J].同济大学学报(自然科学版),1999,27(1):1-5. |
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| 作者姓名： | 李国强 蒋首超 |
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| 作者单位： | 同济大学建筑工程系!上海，200092，同济大学建筑工程系!上海，200092 |
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| 基金项目： | 国家自然科学基金! (批准号 :5 94780 3 8)，上海青年科技启明星计划! (批准号 :92QF0 3 114) |
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| 摘 要： | 基于广义Ｃｌｏｕｇｈ模型，建立了高温下的钢结构单元单元切线刚度方程，该方程考虑了材料非线性和几何非线性的影响，同时考虑了单元截面非均匀分布的影响，并用等效温度荷载较好地节热膨胀效应，该单元刚度方程形式简单，计算量小，便于工程实际应用。
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| 关 键 词： | 单元刚度方程 钢结构 非线性 等效温度荷负 |
Tangent Element Stiffness Equation for Steel Beam with Non-uniform High Temperature |
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| Li Guoqiang,Jiang Shouchao.Tangent Element Stiffness Equation for Steel Beam with Non-uniform High Temperature[J].Journal of Tongji University(Natural Science),1999,27(1):1-5. |
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| Authors: | Li Guoqiang Jiang Shouchao |
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| Abstract: | Based on the generalized Clough model, a tangent elemental siffness equation for steel beam elements under high temperature condition is established, with temperature-dependent material nonlinearity and geometrical nonlinearity being taken into account. The non-uniform profile of temperature across the element section is also considered. The effect of thermal expansion is converted to equivalent temperature loads. The proposed elemental stiffness equation is very convenient for practical application due to its simplicity and less computational effort. |
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| Keywords: | Element stiffness equation Steel structure Nonlinearity Equivalent thermal loads Generalized Clough model |
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