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本文结合某地下室工程换撑的实例，叙述换撑的必要性与做法，着重探讨钢管砼作为换撑的手段在性能、机理上的优越性与实际取得的良好效果。
In this paper, based on the example of a basement project for supporting bracing, the necessity and practice of exchanging bracing are described, and the superiority of the performance and mechanism of the peg concrete bracing as a means of exchanging bracing and the good results actually obtained are discussed.