| 部分预应力混凝土梁正截面疲劳性能及计算方法 |
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| 引用本文： | 沈在康,孙慧中,马坤贞,顾水生,刘承瑞.部分预应力混凝土梁正截面疲劳性能及计算方法[J].建筑结构学报,1981,2(5):1-13. |
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| 作者姓名： | 沈在康 孙慧中 马坤贞 顾水生 刘承瑞 |
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| 摘 要： | 本文通过16根出现裂缝的先张法部分预应力混凝土试验梁及3根试验吊车梁的静力和疲劳试验,较系统地研究了此类梁的疲劳性能。文中剖析了在重复荷载作用下裂缝截面处钢筋应力的变化规律以及垂直裂缝的开展与闭合;提出了预应力钢筋应力的计算方法和裂缝的控制条件。
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| 收稿时间： | 1981-10-05 |
| 修稿时间： | 1981-10-05 |
Fatigue Behaviour of the Normal Section of Partially Prestressed Concrete Beams and Its Calculating Method |
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| Shen Zaikang,Sun Huizhong,Ma Kunzhen,Gu Shuisheng,Liu Chengrui.Fatigue Behaviour of the Normal Section of Partially Prestressed Concrete Beams and Its Calculating Method[J].Journal of Building Structures,1981,2(5):1-13. |
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| Authors: | Shen Zaikang Sun Huizhong Ma Kunzhen Gu Shuisheng Liu Chengrui |
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| Abstract: | Based on the static and fatigue experiments of sixteen pieces of I-section test beams and three pieces of prototype I-section crane girders, the fatigue behaviour of partially prestressed concrete beams has been studied. The stress variations of prestressing steel in the cracking section and the development and closure of flexural cracks under repeated loading have been analyzed. Furthermore, calculating method for the stress of prestressing steel and controlling conditions of crack width are also presented in the paper. |
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