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| 碳绞线体外预应力在桥梁中的应用 | |
| 引用本文： | 王鹏,丁汉山,吕志涛,张义贵,张睿,朗冬梅.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. |
| 作者姓名： | 王鹏 丁汉山 吕志涛 张义贵 张睿 朗冬梅 |
| 作者单位： | 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 |
| 基金项目： | 江苏省交通科学研究计划 |
| 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. |
| 关 键 词： | 桥梁 体外预应力 CFRP筋 延性 抗弯承载力 |
| 文章编号： | 1001-0505(2007)06-1061-05 |
| 修稿时间： | 2007年3月30日 |
Application study of external prestressing by CFCC in bridge |
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| Wang Peng,Ding Hanshan,Lü Zhitao,Zhang Yigui,Zhang Rui,Lang Dongmei.Application study of external prestressing by CFCC in bridge[J].Journal of Southeast University(Natural Science Edition),2007,37(6):1061-1065. | |
| Authors: | Wang Peng Ding Hanshan Lü Zhitao Zhang Yigui Zhang Rui Lang Dongmei |
| 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. |
| Keywords: | bridge externally prestressed carbon fiber reinforced polymer tendon ductility flexural capacity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |