大跨度正交索网屋盖结构施工技术及受力分析

安装工程 > 2025年第卷第08期

DOI: 10.7672 / sgjs2025080017

大跨度正交索网屋盖结构施工技术及受力分析

作者：赵通

作者简介：

赵通，高级工程师，E-mail: 13691557629@ 163. com

作者单位：

北京市政集团有限公司，北京 100024

摘要：

某大跨度屋盖结构由大跨度马鞍形环桁架、正交索网组成，其拉索数量多、内力大，拉索的合理张拉工序需从结构受力、现场实际等多方面进行分析而确定。介绍环桁架、正交索网及幕墙柔性拉索总体施工工艺，采用有限元软件分析幕墙柔性拉索张拉对环桁架及正交索网受力及变形的影响，并开展正交索网安装全过程施工仿真分析。分析结果表明，幕墙柔性拉索张拉对环桁架及正交索网的受力及变形影响较小，实际施工时可根据现场实际情况灵活确定幕墙柔性拉索张拉时机；正交索网结构安装工序合理，成型后索力较好地满足了设计索力要求。

关键词：屋盖；正交索网；环桁架；拉索；张拉；索力；变形

English：

A large-span roof structure is composed of large-span saddle-shaped ring truss and orthogonalcable net. The number of cables is large and the internal force is large. The reasonable tensioning processof cables needs to be analyzed and determined from the aspects of structural force and field practice. Theoverall construction technology of ring truss, orthogonal cable net and flexible cable of curtain wall isintroduced. The influence of flexible cable tension of curtain wall on the stress and deformation of ringtruss and orthogonal cable net is analyzed by finite element software, and the construction simulationanalysis of the whole process of orthogonal cable net installation is carried out. The analysis results showthat the tension of the flexible cable of curtain wall has little influence on the stress and deformation ofring truss and the orthogonal cable net. In the actual construction, the tension time of the flexible cable ofcurtain wall can be flexibly determined according to the actual situation of the site. The installationprocess of orthogonal cable net structure is reasonable, and the forming cable force meets the design cableforce requirements well.

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安装工程 > 2025年 第卷 第08期