bridge box

基本解释

Temporary structures are set up to support the formwork when a large concrete bridge with box-section is built.
采用箱型截面的大型混凝土桥梁，其结构施工过程中浇注混凝土需要设置临时支撑结构。
This paper researches the mix ratio of C55 concrete and construction technology of Xiaoshawan Bridge box girder, especially the influence of hill sand on concrete performances.
对小沙湾黄河大桥主桥箱梁C55混凝土配合比和施工工艺进行了研究，重点分析了山砂对混凝土性能的影响。
On the basis of the variational method, a finite difference solution is presented for shear lag effect in Qiantang River Bridge with box section of varying depth.
本文结合钱塘江二桥应用变分法推导了变截面箱形梁剪滞效应的微分方程并利用有限差分法求得解答。