堰闸坝结构的抗震性能分析
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摘要
运用振型分解反应谱法对某堰闸坝整体结构进行地震作用计算,在对整体结构性能分析的基础上,对关键部位的应力状态进行了重点分析。结果表明:整体结构的变形和受力情况与激励地震的方向有关,几何突变和材料突变处产生了较大的主拉应力和主拉应力区,在抗震验算和配筋计算时应制定合理的处理措施;坝体的位移、应力、抗滑稳定性均满足规范的要求。
The mode-superposition response spectrum method was applied to calculate structure seismic action of a gate dam.Based on the analysis of the structure performance,we paid special attention to the stress state of the key parts.The results showed that the displacement and stress of the whole structure were related to the direction of earthquake excitation.As large principal tensile stress and principal tensile stress area appeared in steep change points of geometry shape and material,special attention should be paid when calculating anti-seismic checking and reinforcement arrangement.The displacement,stress and the stability against sliding should meet the standard requirements.
The mode-superposition response spectrum method was applied to calculate structure seismic action of a gate dam.Based on the analysis of the structure performance,we paid special attention to the stress state of the key parts.The results showed that the displacement and stress of the whole structure were related to the direction of earthquake excitation.As large principal tensile stress and principal tensile stress area appeared in steep change points of geometry shape and material,special attention should be paid when calculating anti-seismic checking and reinforcement arrangement.The displacement,stress and the stability against sliding should meet the standard requirements.
引文
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[10]SL 319-2005,混凝土重力坝设计规范[S].(SL 319-2005,De-sign Specification for Concrete Gravity Dams[S].(in Chi-nese))
[2]孙小兵,马兆荣.塔式进水口结构抗震性能研究[A].2008学术年会论文集[C].中国水利学会,2008:804-809.(SUN Xiao-bing.MAZhao-rong.Seismic Behavior Analysis of Intake Tower Struc-ture[A].2008 Annual Meeting Proceedings[C].Chinese HydraulicEngineering Society,2008:804-809.(in Chinese))
[3]Caseone Enersot,RamPello,Sebastiano.DecouPle Seismic A-nalysis of an Earth Dam[J].Soil Dynamics and Earthquake En-gineering,2003,23(5):349-365.
[4]王良琛.混凝土坝地震动力分析[M].北京:地震出版社,1981.(WANG Liang-chen.Seismic Analysis of Concrete Dams[M].Beijing:Earthquake Press,1981.(in Chinese))
[5]朱伯芳.有限元原理与应用[M].北京:中国水利出版社,1966.(ZHU Bo-fang.Finite Element Theory and Application[M].Beijing:China Water Press,1966.(in Chinese))
[6]荆旭春,罗全胜.宝泉电站下水库重力坝地震动力响应分析[J].人民黄河,2006,28(5):59-60.(JI NG Xu-Chun,LUOQuan-sheng.Analysis on Earthquake Dynamic Response ofGravity Damof the Lower Reservoir of Baoquan Pumped Stor-age Plant[J].Yellow River,2006,28(5):59-60.(in Chinese))
[7]邹辉,张燎军,王海青,等.基于ANSYS的碾压混凝土拱坝抗震分析[J].东北水利水电,2006,24(6):16-18.(ZOU Hui,ZHANG Liao-jun,WANG Hai-qing,et al.Seismic Analysis ofConcrete Arch Dam Based on ANSYS[J].Water Resources&Hydropower of Northeast China,2006,24(6):16-18.(in Chi-nese))
[8]DL 5073-2000,水工建筑物抗震设计规范[S].(DL 5073-2000,Seismic Design of Hydraulic Structures[S].(in Chinese))
[9]乐金朝,谷胜利,赖永星.小浪底南岸进水塔结构抗震性能分析[J].世界地震工程,2002,18(4):111-115.(YUE Jin-chao,GUSheng-li,LAI Yong-xing.Seismic Behavior Analysis of IntakeTower on the South Bank of Xiaolangdi Reservoir[J].WorldEarthquake Engineering.2002,18(4):111-115.(in Chinese))
[10]SL 319-2005,混凝土重力坝设计规范[S].(SL 319-2005,De-sign Specification for Concrete Gravity Dams[S].(in Chi-nese))
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