| 体外预应力加固板梁的试验研究 |
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| 引用本文： | 金花,孙立功,孙明路.体外预应力加固板梁的试验研究[J].国防交通工程与技术,2010,8(1):36-39. |
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| 作者姓名： | 金花 孙立功 孙明路 |
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| 作者单位： | 1. 陕西铁路工程职业技术学院,陕西,渭南,714000
2. 武汉铁路局,湖北,武汉,430031 |
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| 摘 要： | 针对某铁路桥拆除的病害板梁,采用了锚固端使用钢锚座施工的体外预应力加固技术,介绍了加固过程。通过对加固前、加固后的静载试验、疲劳试验,分析证明了体外预应力加固法可以显著的提高板梁的承载能力,且板梁经加固后性能稳定,验证了利用体外预应力法对板梁进行加固的可靠性,为类似工程的加固提供了科学依据。
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| 关 键 词： | 板梁 体外预应力 加固 钢锚座 |
A Test Study of the Externally Pre-stressed Strengthening Plate Beams |
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| Jin Hua,Sun Ligong,Sun Minglu.A Test Study of the Externally Pre-stressed Strengthening Plate Beams[J].Traffic Engineering and Technology for National Defence,2010,8(1):36-39. |
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| Authors: | Jin Hua Sun Ligong Sun Minglu |
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| Institution: | 1. Shanxi Railway Vocational Technology Institute,Weinan 714000,China;2. Wuhan Railway Bureau,Wuhan 430031,China) |
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| Abstract: | Aiming at overcoming the defects of the plate beam removed from a certain railway bridge, the externally pre-stressing technique is adopted, in which case the steel anchor sockets are used, the construction process of which is described in the pa- per. Through the analysis of the static load tests and the fatigue tests,it is proved that the externally pre-stressing strengthening measure noticeably enhances the bearing capacity of the plate beam and the performance of the strengthened plate beam is found stable,and therefore,the reliability of the externally pre-stressing technique is proved, which may serve as a scientific reference for other similar projects. |
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| Keywords: | plate beam external pre-stressing strengthening steel anchor socket |
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