| 疲劳荷载作用下箍筋行为的分析与计算 |
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| 引用本文： | 杨德滋,蒲黔辉,杨永清.疲劳荷载作用下箍筋行为的分析与计算[J].西南交通大学学报,1994,7(4):391-397. |
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| 作者姓名： | 杨德滋 蒲黔辉 杨永清 |
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| 作者单位： | 西南交通大学结构工程研究所 |
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| 摘 要： | 本文根据２１片部分预应力混凝土Ｔ梁疲劳试验结果，分析了在重复荷载作用下箍筋的应力变化情况以及变幅荷载对箍筋应力的影响。提出了用瞬时荷载下箍筋的总应变做为箍筋损伤的量度；利用等损伤原则，从而沟通了变幅荷载与常幅荷载之间的关系。所建议的各个公式与国内外现有试验结果比较均有较好的吻合性，可供修订规范及设计参考。
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| 关 键 词： | 预应力混凝土 梁 剪切 疲劳 循环荷载 部分预应力混凝土 |
Analysis and Calculation of Stirrup Under Fatigue Load |
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| Yang Dezi,Pu Qianhui,Yang Yongqing.Analysis and Calculation of Stirrup Under Fatigue Load[J].Journal of Southwest Jiaotong University,1994,7(4):391-397. |
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| Authors: | Yang Dezi Pu Qianhui Yang Yongqing |
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| Abstract: | Based on the fatigue test tesults of 21 PPC beams , the effects on stirrup s stress under repeatted load and load with changing fluctuation were analysed.It is suggested that the damage in the stirrup should be measured by the total strain of stirrup duc to instantaneousload;in the light of the principle of equivalent damage, the relation between the effects of the load with steady fluctuation and the load with changing fluctuation is given. Formulae given here can give results quite well coincident with many tests in China and abroad. |
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| Keywords: | prestressed concrete beams shear fatigue cyclic load partial prestressed concrete |
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