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 most important requirement for the application of membrane materials to orthotropic steel deck bridges is that the membrane adhesive layer is able to sufficiently bond to its surrounding material layers. 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. In this paper, details of the contact interface element utilised to model the interfacial bonding properties will be discussed. Furthermore, the traction-separation material law will be chosen to describe the bonding response of the interfacial properties of the membrane to its surrounding surfacing layers on OSDBs. Some numerical examples, in which various aspects of the finite elements response of the contact interface model will be presented. Utilisation of the model in finite element analyses has enabled the investigation of the response of a 3D orthotropic steel deck bridge subjected to the different traffic loading conditions.

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。将膜材料应用于正交各向异性钢桥面的最重要的要求是膜粘合剂层能够与其周围的材料层充分粘合。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。在本文中，将讨论用于模拟界面粘合特性的接触界面元素的细节。此外，将选择牵引分离材料定律来描述膜的界面特性与其周围表面层在 OSDB 上的键合响应。一些数值示例，其中将介绍接触界面模型的有限元响应的各个方面。在有限元分析中使用该模型可以研究 3D 正交各向异性钢桥面桥在不同交通荷载条件下的响应。