山区高速公路桥梁结构型式选择研究

神府高速公路工程实践表明,山区高速公路桥梁上部结构型式选用需考虑桥址处的地形特点,结构的基价比较结果,以及施工阶段的实际吊装能力、施工预制场地和运输条件等因素；下部结构的型式结合地形、地质、施工工艺、施工工期、造价和结构安全等因素综合确定；跨径组合以数理统计原理为指导通过主要经济指标的比选确定.

Structure Type Selection of Mountain Expressway Bridge

The engineering practice of Shenmu-Fugu expressway shows that topside structure type selection of mountain expressway needs taking consideration of the terrain characteristics in the bridge site, basic price comparison results, the actual lifting capacity, prefabricated field and transportation conditions in the construction phrase. Types of the substructure are determined by topography, geology, construction technology, construction period, cost, structure security and other factors. Span combination is determined by comparison of the main economic indicators in the guidance of the principle of mathematical statistics.