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Analysis on monitoring result in heat preserved and pressure loaded for unit spiral case of TGP
Author(s): YAO Hongbing, ZUO Sanda
Pages: 22-
25
Year: 2004
Issue:
4
Journal: DAM & SAFETY
Keyword: 三峡工程; 蜗壳; 保温加压; 卸压; 监测;
Abstract: 本文对蜗壳充水保温加压及卸压过程进行了分析.加压后,钢板拉应力增大;卸压后各仪器总体变化规律表现为蜗壳拉应力减小,蜗壳与混凝土的缝隙增大,周边混凝土和钢筋压应力增大.卸压后缝隙最大开度出现在低温季节,最小开度出现在夏季.通过分析认为左厂房机组蜗壳工作性态正常,应力和变形均在设计允许范围内.
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