| 撬力对螺栓抗拉连接承载力的影响 |
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| 引用本文： | 吴兆旗,张素梅.撬力对螺栓抗拉连接承载力的影响[J].地震工程与工程振动,2008,28(6). |
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| 作者姓名： | 吴兆旗 张素梅 |
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| 作者单位： | 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090 |
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| 基金项目： | 黑龙江省科技攻关重点项目(GB02C204) |
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| 摘 要： | 螺栓抗拉连接中的撬力降低连接的极限承载能力和疲劳性能，在设计中需加以考虑。现行《钢结构设计规范》（GB50017—2003）无相关计算方法的规定。本文利用有限元方法对T形连接抗拉性能进行分析，通过对多个不同尺寸和材料特性的试件进行调查，讨论了各参数对撬力的影响。有限元计算结果和已有分析方法比较发现，AISC—LRFD方法因忽略了螺栓头对翼缘抗弯承载力的提高，低估了翼缘刚度较小情况下的撬力。若对AISC—LRFD计算模型中螺栓线处的弯矩不加以限制，其结果和有限元与试验吻合良好。
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| 关 键 词： | 抗拉螺栓连接 撬力 有限元分析 高强螺栓 T形连接 设计方法 |
Influence of prying force on tension carrying capacity of bolted connections |
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| WU Zhaoqi,ZHANG Sumei.Influence of prying force on tension carrying capacity of bolted connections[J].Earthquake Engineering and Engineering Vibration,2008,28(6). |
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| Authors: | WU Zhaoqi ZHANG Sumei |
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| Abstract: | Prying force often appears in the tensile bolted connections.It will decrease the carrying capacity and the fatigue behavior of the connections.So,it is necessary to take the prying force into account in the connection design.However,there are no specifications on the estimate of prying force in the current code for design of steel structures(GB50017).In this paper,the T-stub connections were analyzed by finite element method.The influence of geometric and physical parameters on the prying force was discuss... |
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| Keywords: | tensile bolted connections prying force finite element method high strength bolt T-stub connections design method |
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