预应力混凝土T形梁桥动力特性分析模型

本文对预应力混凝土Ｔ形梁桥动力分析建方法进行了详细研究。将桥梁划分为梁段单元，考虑Ｔ形梁的弯曲、自由扭转、约束扭转变形以及桥梁局部构件（如横隔板等）的作用，由能量原理建立结构的单元特性矩阵。实践应用表明，本文提出了方法使用方便，适合于计算机求解，是装配式预应力混凝土Ｔ形梁桥结构动力分析的一种实用可靠的方法。

Dynamic characteristics analysis model of prestressed concrete T-type beam

HT5SS]Detailed research on the method of founding a model for dynamic analysis of prestressed concrete T\|type beam is made in this paper. The bridge is scattered in beam\|segment elements, considering the flexural, free torsional, restraint torsional deformation of T\|type beam and the action of local member(exp. cross diaphragm plate, etc.) the element characteristic matrix of structure is established by the principle of energy. Applications in practice suggest that the method presented in this paper is convenient for applications and suitable for solution with computer as well, so it is a practical, reliable method for dynamic analysis of fabricated prestressed concrete T\|type beam structure.