ABSTRACT

The adhesive bonding strength of the membrane layers between the asphalt concrete surface layers and the decks of steel bridges has a strong influence on the fatigue life of orthotropic steel deck bridges (OSDBs). The interfacial properties between the membrane and the layers bonded to it have not been extensively studied in the current orthotropic steel deck bridge system. For the adequate characterisation of the adhesive-bonding strength of various membranes and surrounding materials on OSDBs and for the collection of the necessary parameters for finite element model, details of the membrane adhesion test (MAT) are introduced and simulated by using the adhesive traction-separation interface element which was developed in a companion paper to this contribution (Liu, X., Kasbergen, C., Li, J., & Scarpas, A. (2019). Modelling of membrane bonding response: part 1 development of an adhesive contact interface element. International Journal of Pavement Engineering). Parametric studies of the adhesive contact element utilised for modelling the membrane bonding layer in the MAT test have been performed on the basis of the combination of different critical strain energy release rates and the characteristic opening length in the constitutive model. Comparison of membrane deformation profiles and the in-time debonding force distribution between experimental observations and finite element simulations have been presented.

摘要

沥青混凝土表层与钢桥桥面之间的膜层粘结强度对正交各向异性钢桥面的疲劳寿命有很大影响。在当前的正交各向异性钢桥面桥系统中，膜与与其结合的层之间的界面特性尚未得到广泛研究。为了充分表征各种膜和周围材料在 OSDB 上的粘合强度，并收集有限元模型所需的参数，介绍了膜粘合测试 (MAT) 的详细信息，并使用粘合剂牵引-在此贡献的配套论文中开发的分离界面元素（Liu, X., Kasbergen, C., Li, J., & Scarpas, A. (2019)。国际路面工程杂志）。基于本构模型中不同临界应变能释放率和特征开口长度的组合，对用于模拟 MAT 测试中膜粘合层的粘合剂接触元件进行了参数研究。比较了膜变形曲线和实验观察和有限元模拟之间的及时脱粘力分布。