论文部分内容阅读
在建造预应力混凝土梁桥的时候运用悬臂施工法,渐渐的将已建完的墩台顶部直接的逐段连续的同跨径方向延伸施工,每当延伸出一段就需要施加预应力使它和已建完的部分衔接成个整体。若是需要将悬伸的梁体和墩柱体做成具有很强相关性的刚性结构,这样就形成了可以在最大范围内发挥出悬臂施工的预应力混凝土T性钢架桥的优越性。根据悬臂施工时梁体的受力状态在基本状况是和桥梁建成后使用荷载下的受力状态是一致的,也就是施工中所给予加上的预应力。
In the construction of prestressed concrete girder bridge using cantilever construction method, the gradual completion of the piers has been completed directly on top of the continuous section of the span direction of the continuous extension of construction, each extension of the need to exert prestress it and Completed part of convergence into a whole. If it is necessary to make the overhanging beams and piers to make a rigid structure with strong correlation, then the advantages of prestressed concrete T-shaped steel bridges that can exert cantilever construction to the maximum extent are formed. According to the cantilever construction of the beam body in the basic condition of the state and the bridge after the completion of the use of load is consistent with the state of stress, which is given in construction plus prestress.