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首页> 外文期刊>Transportation Research Record >Strengthening Steel Structures and Bridges with High-Modulus Carbon Fiber-Reinforced Polymers: Resin Selection and Scaled Monopole Behavior
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Strengthening Steel Structures and Bridges with High-Modulus Carbon Fiber-Reinforced Polymers: Resin Selection and Scaled Monopole Behavior

机译：用高模量碳纤维增强的聚合物加强钢结构和桥梁：树脂的选择和成比例的单极行为

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摘要

Cost-effective solutions for the rehabilitation and strengthening of steel structures, including bridges and monopole towers, are greatly needed. Rehabilitation is often required because of cross-section losses occurring as a result of corrosion; strengthening may also be required because of changes in the use of a structure. Current techniques for strengthening steel structures have several drawbacks, including their fatigue performance and the need for ongoing maintenance owing to continued corrosion attack. The current research program makes use of a high-modulus carbon fiber for the strengthening of steel structures. This program, currently in progress, includes phases for the resin and adhesive selection for wet layup of carbon fiber sheets and bonding of precured laminate plates. Test results of the first scaled monopole tower showed a 25% increase in stiffness in the elastic range compared with the same monopole before strengthening.
机译：迫切需要具有成本效益的解决方案来修复和加固钢结构，包括桥梁和单极塔。通常需要进行修复，因为腐蚀会导致横截面损失。由于结构用途的变化，可能还需要加强。当前用于加固钢结构的技术具有多个缺点，包括它们的疲劳性能以及由于持续的腐蚀攻击而需要进行持续维护的需求。当前的研究计划利用高模量碳纤维来加强钢结构。该程序目前正在进行中，包括用于树脂和粘合剂选择的阶段，用于碳纤维片的湿法铺层和预固化层压板的粘合。第一个按比例缩放的单极塔的测试结果表明，与加固之前的同一单极相比，弹性范围内的刚度提高了25％。

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