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杭州大剧院采用大跨预应力混凝土框架结构。本文主要对该剧院主舞台中的多层预应力混凝土框架进行了考虑张拉施工方案的计算分析。结果表明 ,现行设计法所得的预应力综合弯矩和预应力次弯矩与实际值有较大的偏离。本文以保证按逐层法施工时现行设计法能满足框架控制截面的抗裂和承载能力要求 ,提出了修正方法。
Hangzhou Grand Theater using large-span prestressed concrete frame structure. In this paper, the main stage of the theater in the main stage of multi-layer prestressed concrete frame considering the calculation of tensioning program. The results show that the current design method obtained prestressed composite moment and prestressed sub-moment and the actual value of a larger deviation. In this paper, to ensure that the current design method can meet the requirements of cracking resistance and bearing capacity of the control cross-section of the frame when the construction method according to the layer by layer method is proposed, and the correction method is proposed.