For medium and small-scale steel structure stadiums, in order to minimize the impact of the construction process on the structural state, a prestressing construction process tailored to medium and small stadiums is proposed, taking full advantage of the inherent elastic deformation range of steel structures. The main steps of the process involve the construction of the main truss first. After the main truss construction is completed, it is lowered to a certain position within its elastic range using cables. The roof grid is then connected to the main truss. Once all connections are completed, the cable tension is gradually released. After the cable tension is released, the main truss exhibits a certain degree of rebound. During the rebound process, the roof grid forms a prestressed structure, ensuring stability and integrity between the main truss and the roof. Through numerical simulation, process analysis is conducted on this construction process, and the optimal construction scheme is proposed.

中文翻译：

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大跨度双向悬索钢屋盖结构预应力反张法施工方法及工艺优化

针对中小型钢结构体育场馆，为了尽量减少施工过程对结构状态的影响，提出了一种适合中小型体育场馆的预应力施工工艺，充分利用钢结构固有的弹性变形范围。 。该过程的主要步骤首先涉及主桁架的构建。主桁架施工完成后，利用缆索将其降低到其弹性范围内的某一位置。然后将屋顶网格连接到主桁架。一旦所有连接完成，电缆张力逐渐释放。索拉力释放后，主桁架呈现一定程度的回弹。在回弹过程中，屋顶网架形成预应力结构，保证主桁架与屋顶之间的稳定性和完整性。通过数值模拟，对该施工过程进行工艺分析，并提出优化施工方案。