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结合预应力阶段的安全壳仪表系统监测数据,利用CEB-FIP 90荐的混凝土收缩、徐变公式进行分析,可计算得到安全壳筒壁区域结构性能参数。在计算过程中,需要对垂直预应力钢束施工过程对K层仪表处混凝土应力影响、钢束张拉时间点进行简化。介绍一种简化方案,并结合工程案例对此简化方案进行验证。
Combined with the monitoring data of containment instrumentation system in prestressing stage, the structural performance parameters of the containment wall area can be calculated by CEB-FIP90 concrete shrinkage and creep formula. In the process of calculation, it is necessary to simplify the stress of concrete during the construction process of vertical prestressing steel beam and the tension moment of steel strands. Introduce a simplified solution and verify the simplified solution with engineering cases.