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.
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。
It is pointed out that the cause of decrease in cracking load is mainly due to the presence of ducts in concrete elements which weaken the bursting resistance of the anchorage zone.
指出预留孔道削弱了锚固区抗劈裂的能力，成为降低开裂荷载的主要因素。
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