西安北站大跨折板空间钢网壳施工技术

Large-span Steel Grid Construction Technology of Xi'an North Railway Station

针对郑西铁路客运专线新建的铁路客运站——西安北站,分析其施工的重点与难点,编制临时支撑设置方案,设计临时支撑胎架类型与适用条件,提出主要构件的吊装方法,并进行站房屋面网架安装与就位验算。结果表明,网架吊装和就位在变形、强度和稳定方面均能满足要求。提出站房屋面主要网架安装过程质量控制要求,工程工期短、造价低,安全可靠。

Based on large-span steel grid construction of Xi’an North Railway Station in Zhengzhou-Xi’an Passenger Dedicated Line,key points and difficulties of construction are analyzed,the temporary support schemes are made,the type and applicable conditions of temporary supports are designed,the main components hoisting methods are suggested,and the grid install and emplacement are calculated.The results show that the strength and stability of grid hoisting and deformation can meet safety requirements,quality control requirements on installation process are put forward.These guarantee the construction short period,low cost,safety and reliability.