bridge box

基本解釋

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橋梁，其結構施工過程中澆注混凝土需要設置臨時支撐結構。
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.
對小沙灣黃河大橋主橋箱梁C55混凝土配合比和施工工藝進行了研究，重點分析了山砂對混凝土性能的影響。
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.
本文結合錢塘江二橋應用變分法推導了變截面箱形梁剪滯效應的微分方程并利用有限差分法求得解答。