新建常规长桥结构技术经济指标比选研究

Study on Technical and Economic Indicators Comparison for New Built Long Bridge Structure

以某新建常规长桥为例,通过对比不同结构的优点与缺点,对上部结构形式、跨径、下部结构形式进行比选。最终,上部结构选择小箱梁,确定小箱梁结构跨径为30 m,下部结构选择三柱墩。该方案不仅施工简单方便,且成本较低,能满足质量、成本、工艺等各方面的需求。

In this paper, taking a new conventional long bridge as an example, the advantages and disadvantages of different structurals are compared through comparison and selection of superstructure, span and substructure, and it is concluded that small box girder is selected for superstructure, and the span of small box girder is determined to be 30 m, and three-pillar pier is selected for substructure. This scheme is not only simple and convenient in construction, but also low in cost, which can meet the requirements of quality, cost, technology and other aspects.