体外预应力加固简支T型梁使用性能试验研究

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基金项目:

广州市科技计划项目(2008J1-C201);广州市公路局科技项目(穗公研2008-3);广东省公路局科技项目(2004-5);广州市建设委员会科技项目(2004-8)资助

EXPERIMENTAL RESEARCH ON THE SERVICE PERFORMANCE OF SIMPLE-BEARING T-TYPE BEAMS REINFORCED BY EXTERNALLY PRESTRESSED TENDON

1.
1. Faculty of Civil and Highway Engineering,Guangdong University of Technology,Guangzhou 510006,China;
2.
2. Highway Bureau of Yunfu in Guangdong,Yunfu 527000,China

摘要: 体外预应力加固简支梁的试验研究对深入了解体外预应力加固简支梁的机理有理论和实际意义。以试验分析为手段，研究体外预应力加固前后简支梁的性能，分析各级试验荷载作用下的裂缝分布发展、跨中挠度和全梁变形情况。得出体外预应力可以较大程度地提高承载力、抑制裂缝发展和改善梁的变形性能。
- 体外预应力 /
- 加固 /
- 试验研究
Abstract: It has theoretical and practical value to carry out the experimental research of simply-supported T-type beam reinforced by externally tendons，whose mechanism can be deeply recognized. By means of the experiment，the service performances of simply-supported beam before and after strengthened by externally tendons were investigated，such as the distribution and development of crack，deflection of mid-span，deformation of whole beam under different loading cases. It can be inferred that the bearing capacity of beam can be improved sharply after strengthening，the development of cracks can be suppressed and the deformation capacity can be improved.
- externally prestressing /
- strengthening /
- experimental research