| 计及轴向压力的方管节点塑性铰线模型 |
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| 引用本文： | 张骥,董满生,葛斐,洪友士.计及轴向压力的方管节点塑性铰线模型[J].固体力学学报,2006,27(2):127-134. |
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| 作者姓名： | 张骥 董满生 葛斐 洪友士 |
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| 作者单位： | 中国科学院力学研究所非线性力学国家重点实验室(LNM) 北京100080 |
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| 基金项目： | 国家自然科学基金重点项目(10532070)资助 |
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| 摘 要： | 塑性铰线分析模型已成功用于估计由弦杆表面屈服控制的各种管节点的强度;然而弦杆自身的轴向压力对节点承载力的影响仍然是用一个经验折减系数来考虑的.为了计算在轴向压力作用下沿倾斜塑性铰线的极限弯矩,研究者们提出了各种理论模型.该文对这些模型进行了分析和对比.结果表明,采用简化假设的阶梯形塑性铰线模型用于评价T形方管节点的强度与试验结果和有限元计算结果符合得最好.
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| 关 键 词： | 方管 节点 塑性铰线分析 倾斜塑性铰线 |
| 修稿时间： | 2005年3月8日 |
PLASTIC HINGE LINE MODEL OF RECTANGULAR HOLLOW SECTION JOINTS UNDER AXIAL COMPRESSIVE FORCE |
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| Zhang Ji Dong Mansheng Ge Fei Hong Youshi.PLASTIC HINGE LINE MODEL OF RECTANGULAR HOLLOW SECTION JOINTS UNDER AXIAL COMPRESSIVE FORCE[J].Acta Mechnica Solida Sinica,2006,27(2):127-134. |
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| Authors: | Zhang Ji Dong Mansheng Ge Fei Hong Youshi |
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| Abstract: | The plastic hinge line analysis model has proved successful in predicting the strength of different structural hollow section(SHS) joints due to yielding of the connecting face of the chord.A reduction factor is used to consider the influence of axial force in the chord.Various methods,which take axial force in the chord into account,used for the calculation of ultimate moment along an oblique plastic hinge line have been investigated and compared.The estimations from the stepped plastic hinge line model using simplified assumptions are in good agreement with the results from both laboratory tests and present finite element analyses for T-type rectangular hollow section(RHS) joints. |
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| Keywords: | rectangular hollow sections joints plastic hinge line analysis oblique plastic hinge line |
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