Analysis on Adhesively-Bonded Joints of FRP-steel Composite Bridge under Combined Loading: Arcan Test Study and Numerical Modeling
Analysis on Adhesively-Bonded Joints of FRP-steel Composite Bridge under Combined Loading: Arcan Test Study and Numerical Modeling
复制标题
联合荷载下玻璃钢-钢组合桥粘接接头分析：Arcan 试验研究和数值模拟
DOI：
10.3390/polym8010018
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发表时间：
2016-01-01
期刊：
影响因子：
5
通讯作者：
Bijlaard, Frans
中科院分区：
文献类型：
--
作者：
Jiang, Xu;Qiang, Xuhong;Bijlaard, Frans
本文对FRP夹层桥面与钢梁粘结节点的受力性能进行了试验研究和数值分析。通常情况下，胶接接头有三种典型的应力状态：剪应力、拉应力和两者的组合。为了了解胶接接头在试验过程中的应力状态，研制了一种专用加载装置，可提供0°(纯拉伸)、18°、36°、54°、72°和90°(纯剪切)六种不同的加载角度。对胶接接头的破坏模式进行了研究。结果表明，在纯剪切荷载作用下，粘结层的破坏模式为粘结性破坏(粘结层与钢支撑界面附近)。在纯拉伸和复合加载条件下，破坏模式为纤维断裂、FRP分层和FRP夹层与粘结层之间的界面粘结破坏。胶接接头在复合载荷作用下的承载能力远低于纯拉伸和纯剪切载荷下的承载能力。根据六角加载条件下的试验结果，得出了胶接接头的拉伸/剪切破坏准则。采用有限元建模方法，对胶接接头的应力分布进行了线弹性模拟。
The research presented in this paper is an experimental study and numerical analysis on mechanical behavior of the adhesively-bonded joint between FRP sandwich bridge deck and steel girder. Generally, there are three typical stress states in the adhesively-bonded joint: shear stress, tensile stress, and combination of both. To realize these stress states in the adhesively-bonded joint during tests, a specific loading device is developed with the capacity of providing six different loading angles, which are 0°(pure tension), 18°, 36°, 54°, 72° and 90°(pure shear). Failure modes of adhesively-bonded joints are investigated. It indicates that, for the pure shear loading, the failure mode is the cohesive failure (near the interface between the adhesive layer and the steel support) in the adhesive layer. For the pure tensile and combined loading conditions, the failure mode is the combination of fiber breaking, FRP delamination and interfacial adhesion failure between the FRP sandwich deck and the adhesive layer. The load-bearing capacities of adhesive joints under combined loading are much lower than those of the pure tensile and pure shear loading conditions. According to the test results of six angle loading conditions, a tensile/shear failure criterion of the adhesively-bonded joint is obtained. By using Finite Element (FE) modeling method, linear elastic simulations are performed to characterize the stress distribution throughout the adhesively-bonded joint.