Design of Efficient concrete bridge deck slabs

拟议的研究的目的是开发一种方法，用于设计混凝土桥面板，占的有益效果，并适用于任何给定的几何形状和所有类型的铁钢筋（钢筋，预应力钢，钢纤维）。预计这项研究将产生一个重大的进步，相对于经验方法的桥面板设计，包括在目前的加拿大和美国桥梁设计标准。该方法使设计人员能够在相对有限的参数范围内考虑桥面板设计中的弯曲作用。在此范围内，相对于仅考虑弯曲性能时所需的钢筋，可减少桥面板中的钢筋数量。通过将设计中可考虑的反作用的基础从经验转向理性，拟议的研究将显着扩展反作用的益处可被利用的情况的范围。

The purpose of the proposed research is to develop a method for designing concrete bridge deck slabs that accounts for the beneficial effects of arching action, and that is valid for any given geometry and all types of ferrous reinforcement (reinforcing steel, prestressing steel, and steel fibres). It is anticipated that this research will produce a major step forward relative to the empirical method of deck slab design which is included in current Canadian and US bridge design standards. This method enables designers to account for arching action in the design of deck slabs within a relatively limited range of parameters. Within this range, it leads to reduced quantities of reinforcing steel in deck slabs relative to the reinforcement that would be required considering only bending behaviour. By shifting the basis by which arching action can be considered in design from an empirical to a rational one, the proposed research will significantly extend the range of situations in which the benefits of arching action can be exploited.