CFRP加固高强混凝土梁锚固方式试验研究

王苏岩; 梁金永; 王泽源

doi:10.13409/j.cnki.jdpme.2012.06.006

您当前的位置：

首页 >

文章列表页 >

CFRP加固高强混凝土梁锚固方式试验研究

汶川地震考察与研究 | 更新时间：2025-12-11

- CFRP加固高强混凝土梁锚固方式试验研究
- Experimental Study on Anchorage Methods of Reinforced High-strength Concrete Beams Repaired by CFRP
- 防灾减灾工程学报 2012年32卷第6期页码：678-685
- 作者机构：
  
  1. 大连理工大学
  2. 中国汽车工业工程公司
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目（50878035）资助
- DOI：10.13409/j.cnki.jdpme.2012.06.006
  中图分类号： U375.1
- 纸质出版：2012
- 稿件说明：
移动端阅览
[1]王苏岩,梁金永,王泽源.CFRP加固高强混凝土梁锚固方式试验研究[J].防灾减灾工程学报,2012,32(06):678-685.

WANG Su-yan1, LIANG Jin-yong2, WANG Ze-yuan1. Experimental Study on Anchorage Methods of Reinforced High-strength Concrete Beams Repaired by CFRP[J]. 2012, 32(6): 678-685.
[1]王苏岩,梁金永,王泽源.CFRP加固高强混凝土梁锚固方式试验研究[J].防灾减灾工程学报,2012,32(06):678-685. DOI： 10.13409/j.cnki.jdpme.2012.06.006.

WANG Su-yan1, LIANG Jin-yong2, WANG Ze-yuan1. Experimental Study on Anchorage Methods of Reinforced High-strength Concrete Beams Repaired by CFRP[J]. 2012, 32(6): 678-685. DOI： 10.13409/j.cnki.jdpme.2012.06.006.

摘要

高强混凝土梁受拉底面粘贴补强纤维布后

延性降低显著。为提高补强梁的综合性能

利用四点弯曲梁静载试验

在补强加固梁梁端及跨中实施不同的锚固方式

对比不同锚固组合下加固梁的强度和延性。研究表明:端部U锚能改善加固梁破坏模式

提高加固梁的延性和强度及补强纤维布的利用率。端部U锚联合跨中全包锚固能进一步提高加固梁的延性

显著提高补强纤维布的利用率

且能平衡变形性和承载力在安全储备中的比重;在补强纤维布断裂后

能有效限制补强纤维布的剥离和滑移

继续发挥补强作用

使加固梁延性和强度得以恢复;能对包裹区混凝土产生约束作用

提高混凝土的延性。因此端部U锚联合跨中全包锚固是合理且有充分安全储备的锚固方式。

Abstract

The ductility of the high strength RC concrete beam would diminish significantly if the CFRP is attached to the bottom of the beam.Thus

in order to improve the whole performance of beams strengthened by CFRP

different anchorage methods at beam ends and mid-span are applied to the flexure strengthened beams;and then the mechanical characteristics achieved by four-point bending static loading test are compared.Study shows that U-shaped end anchorages can change the failure mode of flexure strengthened beams;also enhance the flexure capacity

ductility and the utilization ratio of reinforcing CFRP.The U-shaped end anchorages

together with fully CFRP-wrapped mid-span anchorages

could further improve the ductility of test beams

notably increase the utilization ratio of reinforcing CFRP

and balance the proportion of deformability and flexure capacity at a fixed safety reservation.Moreover

they also could decrease the occurrence of sheet’s stripping and sliding after reinforcing FRP fractures.Therefore

the load capacity and ductility could recover

while the CFRP fully wrapping at the mid-span can bring about confined concrete effect

improving the ductility of concrete.Consequently

the U-shaped end anchorages

along with fully CFRP-wrapped mid-span anchorages

belong to the rational anchorage method with enough safety reservation.

关键词

Keywords

references

FRP复合锚固技术试验研究 [J]. 胡程鹤,吴智敏,宿莹,石昌文. 防灾减灾工程学报 . 2010(03)

CFRP布加固钢筋混凝土梁的新型复合粘结技术 [J]. 宿莹,吴智敏,胡程鹤,石昌文. 建筑科学与工程学报 . 2009(04)

碳纤维布加固高强钢筋混凝土梁抗弯性能试验研究 [J]. 王苏岩,杨玫. 建筑科学 . 2006(05)

碳纤维布与钢板复合加固钢筋混凝土梁抗弯性能试验研究 [J]. 卢亦焱,周婷. 铁道学报 . 2006(01)

受弯构件的变形性与新的性能指标的研究 [J]. 冯鹏,叶列平,黄羽立. 工程力学 . 2005(06)

Refinement of a Design-Oriented Stress–Strain Model for FRP-Confined Concrete [J] . J. G. Teng,T. Jiang,L. Lam,Y. Z. Luo. Journal of Composites for Construction . 2009 (4)

Slip effects in reinforced concrete beams with mechanically fastened FRP strip [J] . Jae Ha Lee,Maria M. Lopez,Charles E. Bakis. Cement and Concrete Composites . 2009 (7)

Strengthening RC Beams in Flexure Using New Hybrid FRP Sheet/Ductile Anchor System [J] . Khaled Galal,Amir Mofidi. Journal of Composites for Construction . 2009 (3)

Ultimate Condition of Fiber Reinforced Polymer-Confined Concrete [J] . L. Lam,J. G. Teng. Journal of Composites for Construction . 2004 (6)

Ductile Design of Reinforced Concrete Beams Retrofitted with Fiber Reinforced Polymer Plates [J] . Tai-Kuang Lee,Austin D. E. Pan,Michael J. L. Ma. Journal of Composites for Construction . 2004 (6)

Strength and Ductility of RC Beams Repaired with Bonded CFRP Laminates [J] . G. Spadea,R. N. Swamy,F. Bencardino. Journal of Bridge Engineering . 2001 (5)

Optimizing the performance characteristics of beams strengthened with bonded CFRP laminates [J] . G. Spadea,F. Bencardino,R. N. Swamy. Materials and Structures . 2000 (2)

Structural Behavior of Composite RC Beams with Externally Bonded CFRP [J] . G. Spadea,F. Bencardino,R. N. Swamy. Journal of Composites for Construction . 1998 (3)

浏览量

104

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

暂无数据