高水头下闸门竖井衬砌结构计算研究

从高水头下闸门井结构的实际受力出发,对围岩固结圈和外水折减两种计算思路进行计算分析,计算结果表明,两种计算方法变化规律一致,采用固结圈与衬砌共同承担井筒外水压力时,闸门井结构受力略大,但外水折减系数不能实际确定,考虑结构实际受力,围岩固结圈计算方法更加精确,符合工程实际。

Based on the actual force of the high-head gate structure,the calculations of the surrounding rock consolidation circle and the external water reduction are calculated.The calculation results show that the two calculation methods have the same regularity.When the rock consolidation circle and the lining jointly bear the outside water pressure,the structure of the gate well is stronger,but the external water reduction coefficient cannot be determined.Considering the actual force of the structure,the calculation method of the surrounding rock consolidation circle is more accurate and conforms to the engineering practice.