The Beijian bridge and Xidong bridge of "sister bridge" are woven beam timber-arched covered Bridges, called the "most beautiful Bridges in the world".
“姐妹桥”的北涧桥、溪东桥被称为“世界上最美丽的廊桥”，这两座廊桥为编梁式木拱廊桥。
Therefore, the paper expatiates counter-arched method of long span box beam-iteration, and the process of counter-arched calculation of Shenzhen conference and exhibition center.
为此，本文阐述了大跨度箱形梁的预拱确定方法——逆迭代法，并以深圳会展中心箱形梁为实例说明计算过程。
Therefore, the paper expatiates counter-arched method of long span box beam-iteration, and the process of counter-arched calculation of Shenzhen conference and exhibition center.
为此，本文阐述了大跨度箱形梁的预拱确定方法——逆迭代法，并以深圳会展中心箱形梁为实例说明计算过程。
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