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| Nonlinear mechanic behaviors of CFRP cables |
| Received:June 28, 2007 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20095023 |
| KeyWord:CFRP cables ultimate span sag effect thermal stress |
| Author | Institution |
| 张建东 |
广东省建筑设计研究院,广州 |
| 方志 |
湖南大学 土木工程学院,长沙 |
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| Abstract: |
| Interest in the use of Carbon Fiber Reinforced Polymer (CFRP) in lieu of steel cables in cable-stayed bridges is increasing due to the high-strength, light-weight and corrosion-free properties of such materials. The sag effect, effective modulus, temperature effect and potential ultimate span of CFRP cables have been discussed on the basis of nonlinear comparative studies with steel cables. It shows that CFRP cable is of higher loading efficiency, longer ultimate span and greater effective modulus due to its higher strength and lighter weight, especially to those extra long cables. Its ultimate span is about 7 times of that of steel cable, the thermal stress in carbon cable is only about 5％ of that in steel cable at the same temperature difference and boundary condition, and the thermal stresses both in carbon cable and in steel cable with sag will decrease. |
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