中文摘要：

针对西藏会展中心钢结构屋盖安装，提出了屋盖外围部分采用组合单元吊装，屋盖内部部分采用整体提升技术。对安装过程中的关键难点进行了详细分析，确保了施工过程的安全和质量。工程实践证明，提出的施工技术安全经济，施工质量得到了保证。

英文摘要：

For construction of steel structure roof of Tibet Convention and Exhibition Center, a construction plan of the outer part of the roof lifting by combining unit, the internal part of roof by integral lifting technology is established. The key construction methods is discussed and analyzed in detail, ensure the safety and quality of construction process, Engineering practice shows that the proposed construction technology is safety and economic, and the construction quality is guaranteed.