变电站专用小跨径桥梁结构选型

Structure Type Selection of Small Span Bridge in Transformer Substation

在对变电站专用小跨径桥梁的特点进行综合分析的基础上,提出专用桥结构形式宜采用预制装配式简支空心板梁桥。在分析典型的220 k V电力变压器运输参数的基础上,确定了专用桥的车辆设计荷载。最后,以某220 k V变电站专用桥设计为例,对预制装配式简支空心板桥主梁的截面设计进行了分析,提出以比设计跨度大一级跨径的板梁截面为基准进行设计,可提高设计与施工效率。

Based on the comprehensive analysis of the characteristics of the special small span bridge, the special bridge structure is proposed. Based on the analysis of typical 220kV power transformer transport parameters, the design load of the special bridge is determined. Finally, with special bridge design in a 220 kV substation as an example, section design of prefabricated simply supported hollow slab girder are analyzed, put forward to than the big span design is a span of plate girder section as the base design, can improve the efficiency of design and construction.