体外预应力加固钢筋混凝土连续梁的试验研究

王云飞; 孟少平; 刘晓艳

doi:10.13204/j.gyjz200912009

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体外预应力加固钢筋混凝土连续梁的试验研究

doi: 10.13204/j.gyjz200912009

1.
1. 南京市建筑设计研究院有限责任公司,南京 210005;
2.
2. 东南大学混凝土及预应力混凝土结构教育部重点实验室,南京 210096

详细信息

作者简介:
王云飞，男，1978年4月出生，博士。E-mail:wyf1978412@sohu.com

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- 文章访问数: 111
- HTML全文浏览量: 11
- PDF下载量: 49
- 被引次数: 0
出版历程
- 收稿日期: 2009-09-12
- 刊出日期: 2009-12-20

EXPERIMENTAL STUDY ON THE FLEXURAL BEHAVIOR OF REINFORCED CONCRETE CONTINUOUS BEAMS STRENGTHENED WITH EXTERNAL PRESTRESSING

1.
1. Nanjing Architectural Design &Research Institute Co. ,Ltd,Nanjing 210005,China;
2.
2. Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Nanjing 210096,China

摘要

摘要: 通过6片体外预应力加固钢筋混凝土连续梁试验研究,以内支座相对受压区高度和预应力配筋指标为参数,得到了加固梁的变形和体外筋应力增长规律,加固梁的跨中变形与体外筋的应力增长主要分为三个阶段,且二者具有较好的相关性,加固梁在极限荷载下的内力重分布比较充分。
- 体外预应力 /
- 连续梁 /
- 内力重分布 /
- 应力增量
Abstract: With a view to different height of compression region and different prestress reinforcement index,6 reinforced concrete continuous beams strengthened with external prestressed tendons are investigated,including midspan deflection,stress increment of external tendons,midspan deflection and stress increment of external tendons have a good correlative relationship,increasing in 3 stages.Internal force redistribution forms fully under ultimate loads.
- external prestressing /
- continuous beam /
- redistribution of internal force /
- stress increment

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参考文献(5)

[2] Ayaho Miyamoto.Behavior of Prestressed Beam Strengthened withExternal Tendons[J].Journal of Structure Engineering,2000,126(9):1033-1044.

Harajli M H.Strengthening of Concrete Beams by External Prestressing[J].PCI Journal,1993,38(6):76-88.

[3] Murat Saatcioglu.External Prestressing Concrete Column for ImprovedSeismic Shear Resistance[J].Journal of Structure Engineering,2003,129(8):1057-1070.

[4] Nihal Ariyawardena.Prestressing with Unbonded Internal or ExternalTendons:Analysis and Computer Model[J].Journal of StructureEngineering,2002,128(12):1493-1501.

[5] Xiao Hanwu.Tendon Model for Nonlinear Analysis of ExternallyPrestressed Concrete Structures[J].Journal of Bridge Engineering,2003,129(1):96-104.

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