| 体外预应力加固混凝土框架梁的试验研究 |
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| 引用本文： | 刘航,李晨光,白常举. 体外预应力加固混凝土框架梁的试验研究[J]. 建筑技术, 1999, 30(12): 855-857 |
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| 作者姓名： | 刘航 李晨光 白常举 |
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| 作者单位： | 北京建筑工程技术研究中心!１０００３９ |
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| 摘 要： | 采用按弯矩图布置的折线体外预应力筋加固钢筋混凝土框架梁结构，在正常使用极限状态下，可显著减小梁的跨中挠度及裂缝宽度；在承载能力极限状态下，可显著提高抗弯极限承载力，效果好于直线体外预应力筋。
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| 关 键 词： | 体外预应力 加固 框架结构 钢筋混凝土结构 |
| 修稿时间： | 1999－09－10 |
EXPERIMENTAL STUDY OF STRENGTHENING RC FRAME BEAMS WITH EXTERNAL PRESTRESSING TENDONS |
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| LIU Hang, LI Chenguang, BAI Changju. EXPERIMENTAL STUDY OF STRENGTHENING RC FRAME BEAMS WITH EXTERNAL PRESTRESSING TENDONS[J]. Architecture Technology, 1999, 30(12): 855-857 |
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| Authors: | LIU Hang LI Chenguang BAI Changju |
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| Affiliation: | LIU Hang; LI Chenguang; BAI Changju |
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| Abstract: | Strengthening RC frame beams with broken-line externalprestressing tendons according to the moment distribution is an effectiveway to decrease the mid-span deflection and the crack widths in theservice limit state and to considerably improve the flexural capacity in theultimate limits state, which shows better mechanical behaviors than thestrengtrhening method of straight line external prestressing tendons. |
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| Keywords: | external prestressing strengthening frame structure |
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