多跨索桁架波型屋盖的防飘雨雪预应力改造设计  

PRESTRESS RECONSTRUCTION DESIGN FOR ANTI-RAIN AND SNOW OF THE EXISTING MULTI-SPAN CABLE TRUSS WAVE CANOPY

作　　者：田承昊[1] 余洋[1] 董城[1] 刘明[1] 

机构地区：[1]铁道第三勘察设计院集团有限公司,天津300251

出　　处：《工业建筑》2015年第5期162-165,共4页Industrial Construction

基　　金：铁道部科技研究开发计划课题项目(2010G009-B)

摘　　要：沈阳北站无站台柱雨棚由17榀钢桁架组成,桁架间通过钢檩条连接,上铺彩钢板。由于雨棚功能不足,因此进行屋面增设铺板改造。根据模拟计算,从增加覆盖面积、增加斜拉索、全覆盖等方面对方案进行比选研究,确保改造工程的安全性、经济性、可实施性。改造最终确定为增加斜拉索方案。通过调整结构内力重分布满足改造后结构的受力要求,回避了对既有雨棚结构杆件加固补强问题,确保了雨棚改造的可实施性。Shenyang North Railway Station canopy without station column was consisted of 17 steel trusses , connected by steel purlines and the upside was paved with color plate.Due to insufficient function, the study of roof additional ceiling reconstruction project was carried.According to the simulation calculation, it was compared the schemes from increase in area, adding more cables and all coverage etc, which could guarantee the security, the economy and the operability of the project.The scheme of increasing stayed cables was confirmed, with which the redistribution of structural inner forces was adjusted to satisfy the force requirement of the reconstructed structure, and avoid the reinforcement of the existing canopy structure members and guarantee the project operability of the canopy.

关 键 词：无站台柱雨棚 预应力 斜拉索桁架 风洞试验 

分 类 号：TU746.3[建筑科学—建筑技术科学] TU318