| 采用CFRP筋施加体外预应力的分析 |
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| 引用本文： | 王鹏,吕志涛,丁汉山,朗冬梅,严玥. 采用CFRP筋施加体外预应力的分析[J]. 特种结构, 2007, 24(3): 80-84 |
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| 作者姓名： | 王鹏 吕志涛 丁汉山 朗冬梅 严玥 |
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| 作者单位： | 1. 东南大学,土木工程学院,南京,210096
2. 江苏省交通科学研究院,南京,210017 |
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| 摘 要： | CFRP筋为非金属材料,抗拉强度高和耐腐蚀性好,可以用作体外预应力束来增强混凝土梁。这里探讨了CFRP筋的蠕变、温度膨胀等特性和筋束弯曲的问题及它们在结构设计中的影响;并就采用CFRP筋施加体外预应力的预应力损失做了细致的分析,给出了设计建议。
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| 关 键 词： | CFRP筋 体外预应力 控制应力 预应力损失 |
Analysis on External Prestressing with CFRP Tendons |
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| WangPeng,Lü Zhitao,Ding Hanshan,Lang Dongmei,YanYue. Analysis on External Prestressing with CFRP Tendons[J]. Special Structures, 2007, 24(3): 80-84 |
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| Authors: | WangPeng Lü Zhitao Ding Hanshan Lang Dongmei YanYue |
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| Abstract: | CFRP tendon is nonmetal.Because of its high-strength,non-corrosive properties,it is suitable for use as external prestressing strands to strengthen concrete beams.The characteristics effect of creep and thermal expansion of CFRP tendons on structural design,and the design problems aroused from tendon bending etc.are discussed.Then the prestressing losses of external prestressing with CFRP tendons are particularly analyzed.Valuable advices on design are provided. |
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| Keywords: | CFRP tendons External prestressing Allowable tendon stresses Prestressing losses |
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