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对预应力索屋盖结构的形状确定问题进行了分类，并对其中一典型情况作了深入分析，建立了确定预应力索屋盖结构初始态预应力分布的理论、方法和方程、算例表明所提出的方法是合理、有效的。
The shape determination of prestressed roof structure is classified, and a typical case is analyzed in depth. The theory, method and equation for determining the initial prestress distribution of prestressed roof structure are established. The examples show that The proposed method is reasonable and effective.