根据三峡升船机顶部机房钢屋架的使用要求，研究分析了钢屋架的结构形式，通过建立三维有限元模型验证了钢屋架结构形式及其设计方案在施工阶段的结构安全性。同时，通过对钢屋架施工方案的研究，制定了适合三峡升船机顶部机房钢屋架施工作业环境的施工程序以及施工设备选型，对钢屋架施工过程中钢桁架分段、格构支撑架的设置、钢桁架吊装、中控室屋面网架安装、屋面板安装等环节提出了针对性的施工方法。三峡升船机顶部机房钢屋架所采用的结构设计方法与施工方案确保了钢屋架的顺利安装与安全运行，对类似工程具有一定的参考价值。

According to the use of the steel roof truss on top of the Three Gorges Project ship lift machine room, steel roof truss structure is analyzed. The safety of steel roof structure and its design scheme is verified by using the establishment of three-dimensional finite element model. At the same time, based on the research of the steel roof truss construction scheme, construction procedure and construction equipment selection are formulated which is suitable for Three Gorges Project ship lift steel roof construction work at the top of the room environment. Specific construction methods have been proposed for steel truss segment, setting of lattice racks, steel truss hoisting installed central control room, roof rack, roof panel, etc. The structure design method and construction scheme of the steel roof of Three Gorges Project ship lift the top room truss ensure the smooth installation of the steel roof truss and safe operation. It has a certain reference value to similar projects