无伸缩缝预应力T梁桥梁高优化设计

Optimized Design of Beam Depth for Prestressed T Beam Jointless Bridge

结合福建省永春县上坂大桥的结构设计与桥梁通用设计图纸,采用桥梁设计软件,建立不同跨径和梁高的两等跨无伸缩缝预应力T梁桥模型;提出一个同时考虑受力性能和造价的优化设计方法;根据该方法得出各种常用跨径的无伸缩缝T梁桥最优的主梁高度,为无伸缩缝桥梁的优化设计提供参考.

Models of prestressed T - beam joinfless bridge with different spans and beam depth are built based on design software, according to standard drawings and the size of an existing jointless bridge, Shangban Bridge. An optimization method is put forward, considering both construction cost and mechanical property. Then the optimal depth of beam for T - beam jomtless bridge is achieved, which can also be used as reference by other type of jointless bridges.