矮肋T形斜梁桥的组合有限元分析与试验研究

矮肋T梁作为新型桥梁结构,应用在大角度斜桥中,由于斜度、弯扭刚度比及支承刚度等因素的影响,内力分析与直梁桥存在着较大差异。传统的计算方法虽然能够将空间效应简便地转化为平面问题来处理,但是引入的过多假设很难反映结构的整体与局部效应。文中通过组合有限元分析方法对结构进行真实模拟,实现结构的仿真分析,从而全面、详尽准确地掌握矮肋T形斜梁桥的空间受力行为及力学特点。最后通过矮T斜梁桥的试验研究对计算方法进行了验证,并对矮肋T梁进行了综述评价。

Integrated Finite Element Analysis and Experimental Study on T-Shaped Skew Beam Bridge with Low Web

T-shaped beam with low web,as a new bridge structure is applied in skew bridge with large angle.The analysis of internal force is different from traditional beam bridge because of the influence factor such as skewness,torsional stiffness and supporting stiffness etc.Although traditional computation method can be simplified by converting spacial effect to plane problem,it is quite hard to reflect the whole and local effect by importing too much hypotheses.It can be realized to carry out emulational analysis of structure by Integrated Finite Element Analysis,and to grasp spacial mechanics behavior and character of T-shaped beam with low web wholly and accurately.Last,computational method is verified by experimental study on skew bridge with low web and proposals are presented also.