FATIGUE LIFE OF DAMAGED BRIDGE DECK PANELS STRENGTHENED WITH CARBON FIBER SHEETS
FATIGUE LIFE OF DAMAGED BRIDGE DECK PANELS STRENGTHENED WITH CARBON FIBER SHEETS
复制标题
碳纤维板加固受损桥面板的疲劳寿命
DOI：
10.14359/13533
复制
发表时间：
2005
影响因子：
1.8
通讯作者：
C. Meyer
中科院分区：
文献类型：
--
作者：
H. Oh;J. Sim;C. Meyer
本文介绍了一项实验研究的结果，该实验研究的目的是评估用碳纤维板 (CFS) 加固并承受重复载荷应用的桥面。作者还探讨了钢筋混凝土结构构件的简化累积损伤理论作为决定加固策略的工具的适用性。为了模拟桥面板的疲劳损伤，对测试面板施加循环载荷，然后使用两种不同的方法用 CFS 加固测试面板。然后在循环载荷下再次对加固后的面板进行测试。作者指出，观察到的疲劳载荷响应与静态测试的结果明显不同。发现各向同性加固比单向加固更有效。所提出的简单损伤理论可用于估计损伤未知的桥面的剩余寿命，即使这些桥面采用 CFS 加固。然而，作者警告说，所提出的模型基于少量测试，因此仅限于控制这些测试的参数范围。
This article presents the results of an experimental investigation that was conducted to evaluate bridge decks strengthened with carbon fiber sheets (CFS) and subjected to repeated load applications. The authors also explored the suitability of a simplified cumulative damage theory for reinforced concrete structural members as a tool to decide on strengthening strategies. To simulate fatigue damage to the bridge deck slabs, cyclic loading was applied to test panels, which were then reinforced with CFS using two different methods. The strengthened panels were then tested again under cyclic loads. The authors note that the observed response to fatigue loads differed markedly from the results of static tests. Isotropic reinforcement was found to be more effective than unidirectional strengthening. The proposed simple damage theory can be used to estimate the residual life of bridge decks with unknown damage, even if these are strengthened with CFS. The authors caution, however, that the proposed model is based on a small number of tests and is therefore limited to the range of parameters governing those tests.