体外预应力加固简支梁和框架梁试验对比研究

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基金项目:

广西自然科学基金资助项目(0447095);广西研究生教育创新计划资助项目(2007105960814M14)

STUDY OF THE COMPARATIVE EXPERIMENT ON SIMPLE BEAMS AND FRAME BEAMS STRENGTHENED BY EXTERNALLY PRESTRESSED TECHNOLOGY

1.
Department of Civil Engineering,Guilin University of Technology,Guilin 541004

摘要: 通过一组体外预应力加固简支梁与框架梁的对比试验,验证了由于竖向构件侧向约束的影响,造成竖向构件剪力增大,横向水平构件有效预应力降低的理论。通过分析研究这种影响的程度与后果认为,工程施工框架、剪力墙等多、高层预应力混凝土结构中应考虑梁的次轴力,并提出如何增强竖向构件抗剪能力的建议。
- 体外预应力 /
- 侧向约束 /
- 次轴力 /
- 柱剪力 /
- 对比试验
Abstract: A comparative experiment on the externally prestressed simple beams and frame beams is conducted. Through this experiment, the theory is proved that shearing force of frame columns is enhanced and effective prestressing of horizontal members is decreased because of effective lateral restraint of the frame columns. And the suggestions are proposed that secondary axial force in frame and shear wall structure must be considered and that of how to increase shearing capacity of frame columns.
- external prestressing /
- lateral restraint /
- secondary axial force /
- shearing force of the column /
- comparative experiment