登录
注册
E-alert
登录
注册
E-alert
FINITE ELEMENT ANALYSIS OF BONDING ANCHORS FOR EXPERIMENTAL BRIDGE WITH CFRP CABLES
-
摘要: 以国内首座CFRP索斜拉桥上使用并获得国家专利的直筒加内锥式锚具为研究对象,选取CFRP筋所受径向挤压应力作为主要研究参数,对其进行影响因素的分析,并提出相应的优化方案。研究表明:采用优化方案后,锚具的挤压应力在锚固长度范围内有所减少且分布更趋于均匀,锚固能力较原锚具也有所提高,说明优化方案是可行的。Abstract: Based on the bonding anchors which used in the first CFRP cable-stayed bridge and obtained the national patent,a main research was given to the bonding anchors composed of direct and inner cone type of tube.The radial stress of CFRP tendons is selected as major research parameters and the influencing factors were analyzed for it.At last,corresponding optimization schemes were given.The results show that radial stress of CFRP tendons is decreased and the distribution tends to uniform,anchoring ability is also increased after the optimization of bonding anchors.Which show that the optimization schemes for bonding anchors are feasible.
-
Key words:
- CFRP cable /
- cable-stayed bridge /
- anchorage /
- finite element
-
[2] Benmokrane B,Zhangb,Chennouf A.Tensile Properties and PulloutBehavior of AFRP and CFRP Rods for Grouted Anchor Applications[J].Construction and Building Materials,2000,14(3):157-170. 詹界东,杜修力,邓宗才.预应力FRP筋锚具的研究与发展[J].工业建筑,2006,36(12):65-67. [3] Nanni A,Bakis C,Dixon T.Performance of FRP Tendon AnchorSystems for Prestressed Concrete Structures[J].PCI Journal,1996,41(1):34-43. [4] 梅葵花,吕志涛,张继文,等.CFRP斜拉索锚具的试验研究[J].桥梁建设,2005,165(4):20-23. [5] 梅葵花,吕志涛,张继文,等.碳纤维复合材料索斜拉桥的设计与测试[J].长安大学学报:自然科学版,2007,27(6):48-52. [6] 郑宏宇.碳纤维缆索悬索桥基本性能和若干关键技术研究[D].南京:东南大学土木工程学院,2007:96-106. [7] 梅葵花.碳纤维拉索斜拉桥的研究[D].南京:东南大学土木工程学院,2005:80-86. [8] 方志,梁栋,蒋田勇.不同粘结介质中碳纤维筋锚固性能的试验研究[J].土木工程学报,2006,39(6):48-51. -
点击查看大图
计量
- 文章访问数: 118
- HTML全文浏览量: 14
- PDF下载量: 74
- 被引次数: 0
下载:
