| FPR-混凝土粘结界面的规律 |
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| 作者姓名： | B. Ferracuti M. Savoia C. Mazzotti |
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| 摘 要： | 根据试验数据,研究了FRP与混凝土粘结的非线性模型II界面规律。所提出的界面规律基于差分方程,并考虑了高剪应力下粘性剂和混凝土保护层的非线性作用。模型中的参数均在拉-拉剥离试验下校准,同时采用了不同荷载水平、不同粘结长度、沿FRP板方向的最大传递荷载与应变。通过有限粘结长度决定的最大传递荷载的估计值来确定界面规律中的断裂能,同时根据应变确定剪切-滑移关系。并通过一系列文献的试验结果验证参数优化程序。在粘结-滑移模型中采用所提出的界面定律进行数值模拟计算,得出粘结区域中FRP的应变、剪应力和滑移与试验结果很吻合。
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| 关 键 词： | FRP板 分层 界面 混凝土 断裂能 |
Interface Law for FRP-Concrete Delamination |
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| B. Ferracuti,M. Savoia,C. Mazzotti.Interface Law for FRP-Concrete Delamination[J].Steel Construction,2008,23(2):73. |
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| Authors: | B Ferracuti M Savoia C Mazzotti |
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| Abstract: | A procedure is developed for deriving a non-linear mode II interface law for Fibre Reinforced Polymer (FRP)-concrete bonding, starting from experimental data. The proposed interface law is based on a fractional formula and includes non-linear contributions of adhesive and concrete cover at high shear stresses. Parameters of the law are calibrated considering pull-pull delamination tests. Maximum transmissible load as well as strains along FRP-plates at different loading levels and bond lengths are used. In ... |
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| Keywords: | FRP plating Delamination Interface Concrete Fracture energy |
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