二龙山水库弧形闸门支臂稳定性分析与优化  

Instability Analysis of Radial Gate Arm of Erlongshan Reservoir and Optimization Measure

作　　者：涂从刚[1] 杜蔚琼 TU Cong-gang;DU Wei-qiong(Inspection and Testing Center of Hydraulic Metal Structure Quality,Ministry of Water Resources,Zhengzhou 450044,China)

机构地区：[1]水利部水工金属结构质量检验测试中心,郑州450044

出　　处：《长江科学院院报》2023年第10期167-172,共6页Journal of Changjiang River Scientific Research Institute

摘　　要：陕西二龙山水库左岸泄水孔弧形闸门在泄洪启门过程中突然出现支臂失稳导致闸门破坏。为研究造成支臂失稳破坏的主因,对事故现场综合分析研判后采用基于ANSYS的静力学分析模块及线性特征值屈曲分析模块对闸门支臂进行强度和稳定性分析。结果表明闸门支臂构件的截面抗弯能力不足是造成支臂出现屈曲破坏的根本原因。在此基础上提出箱型梁支臂结构的改造建议,经过验证表明箱型梁结构支臂强度及稳定性有了较大提高,满足规范及安全运行要求。该方法对其他水利工程类似弧形闸门的安全评价与改造有一定的参考价值。The radial gate of the discharge outlet on the left bank of Erlongshan Reservoir in Shaanxi Province was damaged due to the instability of the support arm.To investigate the primary causes behind the instability,we analyzed the strength and stability of the gate arm using the statics analysis module and linear eigenvalue buckling analysis module based on ANSYS following a comprehensive analysis of the accident site.Results indicate that the buckling failure of the gate arm occurred primarily due to inadequate sectional bending capacity.Based on these findings,we put forward recommendations regarding the renovation by using box beam arm structure.Subsequent verification demonstrates significant improvements in the strength and stability of the box beam structure arm,consequently meeting the specifications and safe operation requirements.The recommended method is of referential value for the safety evaluation and renovation of similar arc gates in other hydraulic engineering projects.

关 键 词：弧形闸门 支臂失稳 更新改造 ANSYS 二龙山水库 

分 类 号：TV663.2[水利工程—水利水电工程]