| 横向预应力混凝土梁的抗剪性能试验研究 |
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| 引用本文： | 吴波,刘灿,徐凯燕.横向预应力混凝土梁的抗剪性能试验研究[J].地震工程与工程振动,2007,27(2):58-62. |
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| 作者姓名： | 吴波 刘灿 徐凯燕 |
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| 作者单位： | 华南理工大学,亚热带建筑科学国家重点实验室,广东,广州,510640 |
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| 基金项目： | 教育部新世纪优秀人才支持计划项目（NCET-04-0819）. |
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| 摘 要： | 通过4根加配横向预应力筋的钢筋混凝土梁和1根普通钢筋混凝土梁的对比试验,初步考察了横向预应力筋对提高钢筋混凝土梁抗剪性能的良好效果。研究结果表明:(1)加配横向预应力筋并施加适当预应力之后,钢筋混凝土梁的抗剪承载力提高70%以上,即使在不施加预应力的情况下,梁的抗剪承载力也约有40%的增长;(2)在横向预应力筋的总截面面积一定的情况下,采用直径较小的横向预应力筋和较小的间距,更有助于改善钢筋混凝土梁的破坏形态。
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| 关 键 词： | 横向预应力筋 抗剪承载力 钢筋混凝土 梁 |
| 文章编号： | 1000-1301（2007）02-0058-05 |
| 修稿时间： | 2006-09-192006-10-23 |
Experimental research on shear capacity of transversely prestressed concrete beams |
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| WU Bo,LIU Can,XU Kaiyan.Experimental research on shear capacity of transversely prestressed concrete beams[J].Earthquake Engineering and Engineering Vibration,2007,27(2):58-62. |
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| Authors: | WU Bo LIU Can XU Kaiyan |
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| Institution: | Key Laboratory of Subtropic Architecture, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Four transversely prestressed concrete beams were tested,and the experimental results were compared with those of one ordinary reinforced concrete beam.The positive influence of transversely prestressed bars on the shear capacity of reinforced concrete beams was demonstrated primarily.Test results show that:(1) Comparing with ordinary reinforced concrete beams,the shear capacity of transversely prestressed concrete beams can be increased by 70%;even in the condition that the transversely prestressed bars are not pre-tensioned,an increase of 40% in the shear capacity can be obtained.(2) For a given total areas of transversely prestressed bars,the bars with smaller diameter and smaller spacing is favorable to improving the mode of the failure of beams. |
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| Keywords: | transversely prestressed bars shear capacity reinforced concrete beam |
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