广州东方宾馆会展中心大跨度预应力钢桁架设计与施工

DESIGN AND CONSTRUCTION OF LARGE-SPAN PRESTRESSED STEEL TRUSS OF CONFERENCE AND EXHIBITION CENTER OF GUANGZHOU DONGFANG HOTEL

东方宾馆会展中心重载大跨屋盖结构选用预应力空间钢桁架,有效地改善了结构内力分布,提高了结构刚度与钢材利用率。在工程实践中,重点解决了有粘结预应力筋配置、张拉端节点构造及分批张拉等难点问题,同时进行结构变形测试,以保证工程质量。

Prestressed space steel truss is adopted for the heavy duty large-span roof structure,which effectively improves the distribu-tion of structural internal force and enhances the structural rigidity and steel utilization.In the construction,emphasis should be on the settlement of difficult problems such as the disposition prestressed re-inforcement,node composition of tension end and tension batch by batch.At the same time,structural deformation test should be carried out to guarantee the project quality.