镇墩是设置在管道水平转角处防止管线移位的水工建筑物,通常为钢筋混凝土结构。主要适用于水电站、抽水站的出水管及供水工程的压力管,主要用来固定压力管道,防止其位移,一般建在管道转折的位置,或直线管道过长时也设镇墩。
在凤凰水电厂更新改造工程中,2、3、5、6号压力钢管的镇墩均出现不同程度的裂缝。
There are various degrees of cracks on anchorage block of No. 2, No. 3, No. 5, No. 6 penstock during in modification work of Fenghuang hydropower plant.
根据对桥梁段倒虹吸钢管及其镇墩基础的抗震分析可知,一般地震下,不必对桥梁倒虹吸钢管进行特殊处理;
According to the antidetonation analysis on the Pour siphon in bridge and associated ease base, the special treatment is generally not required.
从多方面分析、论述裂缝产生的原因,详细阐述处理措施,对进一步完善压力钢管镇墩的设计以及制定其施工方案提供参考。
T his paper analysis and discuss the cause of crack, and put forward the way of treatment which could be a reference for the design and construction on anchorage block of penstock.
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