[1]王鹏,丁汉山,吕志涛,等.碳绞线体外预应力在桥梁中的应用[J].东南大学学报(自然科学版),2007,37(6):1061-1065.[doi:10.3969/j.issn.1001-0505.2007.06.024]
　Wang Peng,Ding Hanshan,Lü Zhitao,et al.Application study of external prestressing by CFCC in bridge[J].Journal of Southeast University (Natural Science Edition),2007,37(6):1061-1065.[doi:10.3969/j.issn.1001-0505.2007.06.024]
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碳绞线体外预应力在桥梁中的应用()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
37
期数:
2007年第6期
页码:
1061-1065
栏目:
交通运输工程
出版日期:
2007-11-20

文章信息/Info

Title:
Application study of external prestressing by CFCC in bridge
作者:
王鹏1;  丁汉山1;  吕志涛1;  张义贵2;  张睿2;  朗冬梅3
1 东南大学土木工程学院, 南京 210096; 2 淮安市高速公路建设指挥部, 淮安 223001; 3 江苏省交通科学研究院, 南京 210017
Author(s):
Wang Peng1;  Ding Hanshan1;  Lü Zhitao1;  Zhang Yigui2;  Zhang Rui2;  Lang Dongmei3
1 School of Civil Engineering, Southeast University, Nanjing 210096, China
2 Huai’an Municipal Expressways Construction Headquarter, Huai’an 223001, China
3 Jiangsu Transportation Institute, Nanjing 210017, China
关键词:
桥梁;  体外预应力;  CFRP筋;  延性;  抗弯承载力
Keywords:
bridge;  externally prestressed;  carbon fiber reinforced polymer tendon;  ductility;  flexural capacity
分类号:
U448.21;TU377.9
DOI:
10.3969/j.issn.1001-0505.2007.06.024
摘要:
为解决混凝土桥梁中钢筋锈蚀引发的问题,采用CFRP筋中的碳绞线作体外束施加预应力.探讨了碳绞线体外预应力混凝土桥梁的结构特点和构造措施,以及该类桥梁中挠度、延性及抗弯、抗剪的计算分析方法.据此在淮安市的何圩桥中研究设计了一跨碳绞线体外预应力混凝土简支梁,并利用有限元法等对其延性和抗弯承载力进行了分析.研究表明,该桥的筋束应力、裂缝宽度、挠度、延性及极限抗弯承载能力各项指标均能满足设计要求.碳绞线体外预应力桥梁发展前景看好.
Abstract:
In order to solve the problem of steel tendons corrosion in concrete bridge, CFCC(carbon fiber composite cable), a kind of CFRP(carbon fiber reinforced polymer)tendons, is introduced to serve as external tendon for prestressing. The structural properties of concrete bridge externally prestressed with CFCC, and the analysis methods of deflection, ductility, bending and shear design of the bridge are discussed. According to the methods, a simple girder of Hewei bridge in Huai’an, Jiangsu, China was designed; and the finite element method etc. are used to analyze its ductility and flexural capacity. It can be concluded that the tendon stress, crack width, deflection, ductility, and the flexural capacity of the bridge all meet the design specification. Therefore this kind of bridges is promising.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 江苏省交通科学研究计划资助项目(03Y028).
作者简介: 王鹏(1973—),男,博士生; 吕志涛(联系人),男,教授,中国工程院院士,fengchuhk@yahoo.com.cn.
更新日期/Last Update: 2007-11-20