溪洛渡高拱坝运行初期应力应变监测资料分析

Stress-strain Monitoring Data Analysis of Xiluodu High Arch Dam in Early Operation Period

通过分析溪洛渡高拱坝运行初期无应力计和应变计组监测基本情况,建立了坝体混凝土应力应变监测资料分析流程,构建了溪洛渡水电站高拱坝应力应变监测资料分析模块,对坝体混凝土的自生体积变形和应力状态进行了计算。计算结果表明,溪洛渡高拱坝大部分无应力计为收缩型,拱坝混凝土自生体积变形随龄期变化稳定;坝体强约束区和典型坝段总体呈受压状态,局部存在少量拉应力,影响范围和计算值均较小。

Based on the analyses of monitoring data of no-stress meter and strain gauge groups for Xiluodu high arch dam in early operation period, the analysis process of dam concrete stress-strain monitoring data is established and the analysis module of stress-strain monitoring data for Xiluodu high arch dam is also established. The autogenous volume deformation and stress state of dam concrete are calculated. The results show that most no-stress meters in Xiluodu arch dam are deflating and the autogenous volume deformation of arch dam concrete along with the age are stable. The dam strong constraint area and typical dam section are generally compressed with small tensile stress in local area, but the impact scope and calculated value of tensile stress are smaller.