水力发电2024，Vol.50Issue(5)：38-44,92,8.
压气储能地下洞室密封钢衬的非线性力学响应特征
Characteristics of Nonlinear Mechanical Response of Sealing Steel Lining in Underground High Pressure Air Storage Caverns
摘要
Abstract
Based on a actual pressurized air storage power station project,the nonlinear influencing factors on the stresses of sealing steel lining(SSL)of the underground air storage caverns are studied based on ABAQUS platform,and the influencing mechanism of the external material's nonlinearity and the contact nonlinearity of SSL-concrete lining(CL)are investigated,respectively.The results show that,(a)the stress level of surrounding rock of shallow underground air storage caverns is not high,and huge air pressure leads to local plastic yielding of the surrounding rock,as a result,the high stress zone of SSL,serious cracking zone of CL and plasticity zone of surrounding rock have a corresponding relationship;(b)considering the contact relationship of SSL-CL makes the steel lining's stress distribution more uniform;(c)after the air pressure is relieved,the SSL is disengaged from the CL at the top under gravity,and after the overhaul and air re-pressurized,the SSL's stress distribution shows an adjustment phenomenon,and the stress peak at top and stress inhomogeneity are increased;(d)the stress of SSL increases with the increase of friction coefficient and gap value,and the effect is not obvious when the friction coefficient is greater than 0.5,but the stress gradient from the gap between SSL and CL is roughly 30-40 MPa/mm;and(e)both the material nonlinearity and contact nonlinearity should be considered in the stress analysis of SSL in underground air storage caverns to ensure that the SSL has enough safety reserve.关键词
压气储能电站/地下洞室/密封钢衬/非线性力学响应/接触/数值计算Key words
pressurized air storage power plant/underground cavern/seal steel lining/nonlinear mechanical response/contact/numerical calculation分类
建筑与水利引用本文复制引用
傅丹,胡小康,伍鹤皋,李鹏,刘志伟..压气储能地下洞室密封钢衬的非线性力学响应特征[J].水力发电,2024,50(5):38-44,92,8.基金项目
长江科学院开放研究基金资助项目(CKWV20231179/KY) （CKWV20231179/KY）
湖湘青年英才项目(2020RC3090) （2020RC3090）
