某水电站拱坝横缝灌后张开原因分析

摘要

In the arch dam in a hydropower station , opening of the transverse joints are observed in some places after the joint grouting is finished .Based on the monitoring data about stress , strain and opening of the dam body , effects of the structural characteristics , changes of temperature and the construction interference in construction period on the opening of transverse joints are analyzed .Main reasons for this opening is determined .Some countermeasures are then proposed accordingly .%某水电站拱坝横缝在接缝灌浆完成后，部分横缝不同程度地张开，通过分析坝体各部位的应力应变和开合度等监测数据，研究拱坝施工期结构特点、温度变化、施工干扰等因素对横缝张开的影响，初步确定了导致横缝灌浆后张开的主要原因，并提出了相应的改进措施，对本工程下一阶段的施工和类似工程具有一定的借鉴意义。