渠江特大桥总体设计比选

Comparison of Overall Design for Qujiang Bridge

西南山区地形条件复杂,跨江桥梁设计受众多因素影响。以渠江特大桥为例,从地形、水文、桥型、造价等角度,对特大桥总体设计进行多方案比选与论证,最终确定(126+240+126)m连续刚构桥。该桥跨径大,适用于地形复杂工况,对山区桥梁结构选型有一定的参考价值。

The terrain conditions in the southwest mountainous area are complex.The design of bridges across river is influenced by many factors.Taking Qujiang Bridge as an example,the multiple schemes are compared and selected for the overall design of this extra-large bridge from the perspective of topography,hydrology,bridge type and cost.Finally,a(126+240+126)-m continuous rigid frame bridge is determined.The spans of this bridge are long and are appropriate for the complex terrain construction,which has a certain reference value for the selection of bridge structures in the mountainous areas.