Attractions Description: The Lishui Old Bridge, also known as "Yongqing Bridge", located in Lishui Lake, was built in the Southern Song Dynasty. Posed by the 48 stone steps, beams columns columns, ancient appearance, blend with nature.
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The steel frame further comprises stand columns and beams, and the stand columns and the beams are provided with brackets;
钢构架进一步包括立柱和横梁，立柱和横梁设置有支架；
The engineering practice shows that the using of concrete-filled rectangular steel tube members reduces the size of the columns, and it is a convenient way to connect steel beams and columns.
工程实践表明，矩形钢管混凝土结构承载力高、抗震性能好，可显著减小柱断面，与钢框架梁连接方便。
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