位于北京市西城区的北京北站,原名西直门站,始建于1905年,于2007年10月起开始进行改建,将原有的旧式雨棚改为大跨度无站台柱雨棚。改建后的北京北站张弦桁架站台雨棚,南北纵向长度680m,东西横向长度118m,最大跨度107m,总投影面积约7·5万m2,是国内覆盖面积最大的张弦结构工程之 Beijing North Railway Station, located in the Xicheng District of Beijing, was renamed Xizhimen Station. It was built in 1905 and began to be rebuilt from October 2007 to replace the existing old canopy with a large-span platform-free canopy. After the reconstruction of the Beijing North Railway Station truss truss platform canopy, the longitudinal length of 680m north-south, east-west horizontal length of 118m, the maximum span of 107m, the total projected area of ​​about 7500 m2, is the largest covered string structure project