抗震安全是水闸结构安全中的重要组成部分,对水闸进行抗震安全复核十分必要.以北京市顺义区南彩节制闸为研究对象,基于ABAQUS三维有限元分析软件,采用振型分解反应谱法对闸室结构整体抗震安全进行有限元复核分析计算.计算结果表明:在正常蓄水工况地震作用下,闸室最大拉应力及压应力均出现在闸墩与排架柱连接处,分别达到6.70 MPa和7.74 MPa,结合工程现场结构配筋考虑,结构满足安全需求.不同工况作用下,闸室结构抗滑稳定安全系数大于水闸设计规范要求值,满足安全需求.
Seismic safety is an important part of sluice safety,so it is necessary to review the seismic safety of sluices.Based on ABAQUS,the seismic safety of the whole chamber structure of Nancai Control Gate at Jiangan River in Shunyi District of Beijing City was analyzed and calculated by the mode decomposition response spectrum.The calculation results showed that under earthquake and normal water storage conditions,the maximum tensile stress and compressive stress of the lock chamber was at the connection of the gate pier and the rack column,which was 6.70 MPa and 7.74 MPa,respectively,and could met the safety requirements by considering the reinforcement of the structure in the site.Under different working conditions,the anti-slip and stable safety factor of the lock chamber structure was larger than the requirements of the design code,which met the safety requirements.