连梁抗震加固中梁跨内有无螺栓连接的影响

朱勇; 苏启亮; 周云

doi:10.13204/j.gyjz200912012

连梁抗震加固中梁跨内有无螺栓连接的影响

doi: 10.13204/j.gyjz200912012

1.
1. 广州大学土木工程学院,广州 510006;
2.
2. 香港大学土木工程系,香港;
3.
3. 广州大学科技处,广州 510006

基金项目:

科技部重大基础研究前期研究专项项目(2004CCA03300);广东省科技创新团队计划资助

详细信息

作者简介:
朱勇，男，1969年4月出生，副教授，博士。E-mail:glenyzhu@hotmail.com

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出版历程
- 收稿日期: 2009-01-20
- 刊出日期: 2009-12-20

EFFECTS ON SEISMIC STRENGTHENING OF COUPLING BEAMS WITH OR WITHOUT BOLT CONNECTIONS IN BEAM SPAN

1.
1. School of Civil Engineering,University of Guangzhou,Guangzhou 510006,China;
2.
2. Department of Civil Engineering,University of Hong Kong,Hong Kong,China;
3.
3. Research Department of Science and Technology,University of Guangzhou,Guangzhou 510006,China

摘要

摘要: 钢筋混凝土连梁是抗侧向力剪力墙或核心筒结构中的一个重要构件。在地震作用下,局部连梁的失效可引起抗侧力结构的整体失效。随着经济、社会的发展,由于安全性或新的用途要求,需对老旧建筑中的连梁进行加固处理。通过对在连梁抗震加固中梁跨内采用有、无螺栓连接连梁的试验,对加固后连梁的抗震结构性能的影响进行研究。研究表明:梁跨内无螺栓连接加固的连梁在循环荷载下,具有更好的耗能性能、强度增加更大、较小的刚度退化、延性性能增强且延性系数不降低。实际连梁加固中推荐在梁跨内无螺栓连接,且用其他方法克服钢板屈曲问题。
- 连梁 /
- 抗震加固 /
- 梁跨 /
- 钢板 /
- 螺栓连接
Abstract: Reinforced concrete coupling beam is an important member of a major lateral load-resisting structure-coupled shear wall or core wall.Under seismic actions,local failure of coupling beams may lead to a more serious global failure of the whole lateral load resisting system of the building.Along with the development of economy and society,it is necessary and important to strengthen coupling beams that are substandard under seismic actions due to the lack of safety margin and new service in old RC buildings.This paper presents an experimental study into the effects on seismic strengthening of coupling beams with or without bolt connections in beam span.The study shows that the strengthened coupling beam without bolt connections in beam span subjected to cyclic loads has better energy dissipation,larger strength,less stiffness degradation.
- coupling bean /
- seismic strengthening /
- beam span /
- steel plate /
- bolt connections

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参考文献(4)

[2] 陈凡,王全凤.剪力墙结构连梁设计的若干问题[J].福建建筑,2005,91(1):47-49.

杜赞华,宋骥.连梁对RC双肢剪力墙抗震性能影响初探[J].石家庄铁道学院学报,2000,13(1):49-51.

[3] Stafford Smith B,Coull A.Tall Building Structures:Analysis andDesign[M].1991:153-178.

[4] Kwan AK H,Zhao Z Z.Testing of Coupling Beams with Equal endRotation Maintained and Local Joint Deformation Allowed[J].Proceedings of the Institution of Civil Engineers-Structures andBuildings,2002,152(1):67-78.

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