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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 Station without a platform canopy canopy consists of 17 榀 steel trusses, trusses connected by steel purlin, the upper color steel plate. As a result of inadequate awning, so additional roof renovation. According to the simulation calculation, the scheme is compared and selected from the aspects of increasing the coverage area, increasing the stay cable, covering the whole coverage, and ensuring the safety, economy and feasibility of the reconstruction project. Transformation finalized to increase the stay cable program. By adjusting the internal force redistribution structure to meet the requirements of the modified structure of the force, to avoid the reinforcement of existing canopy reinforcement bar to ensure the feasibility of the canopy transformation.