拱坝坝后电梯井结构应力变化规律研究
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摘要
因拱坝坝后电梯井结构自身的特殊性,其应力沿高度变化规律与一般电梯井结构不同,目前大部分学者研究拱坝坝后电梯井时,对其内部结构进行了简化。采用ANSYS有限元软件分析电梯井无内部结构与增加内部结构在正常与地震工况下应力沿自身高度的变化规律。结果表明:当电梯井结构在正常工况和地震工况时,电梯井位于坝体内部结构主要为压应力,与坝体连接处拉应力较大,拉应力值沿电梯井高度逐渐降低。当电梯井模拟增加内部结构时,电梯井位于坝体内部结构压应力增加,与坝体连接处拉应力值降低。研究结果可为拱坝坝后电梯井设计提供参考。
Due to the particularity structure of the elevator shaft downstream the arch dam,the variation law of the stress along the height is different from that of the general elevator shaft. At present,most studies simplified the internal structure of the elevator shaft downstream the arch dam. This study used the ANSYS finite element software to analyze the variation of the internal structure of the elevator shaft without increasing the internal structure and increasing the internal structure under normal and seismic conditions. The results showed that: when the structure of the elevator shaft is under normal working conditions and seismic conditions,the internal structure of the elevator shaft is mainly compressive stress,and the tensile stress at the joint with the dam is large,and the tensile stress value gradually decreases along the height of the elevator shaft. When the elevator shaft is simulated to increase the internal structure,the compressive stress of the elevator shaft increased in the internal structure of the dam,and the tensile stress value at the joint with the dam reduced. This study provides reference for the design of the elevator shaft downstream the arch dam.
Due to the particularity structure of the elevator shaft downstream the arch dam,the variation law of the stress along the height is different from that of the general elevator shaft. At present,most studies simplified the internal structure of the elevator shaft downstream the arch dam. This study used the ANSYS finite element software to analyze the variation of the internal structure of the elevator shaft without increasing the internal structure and increasing the internal structure under normal and seismic conditions. The results showed that: when the structure of the elevator shaft is under normal working conditions and seismic conditions,the internal structure of the elevator shaft is mainly compressive stress,and the tensile stress at the joint with the dam is large,and the tensile stress value gradually decreases along the height of the elevator shaft. When the elevator shaft is simulated to increase the internal structure,the compressive stress of the elevator shaft increased in the internal structure of the dam,and the tensile stress value at the joint with the dam reduced. This study provides reference for the design of the elevator shaft downstream the arch dam.
引文
[1]白俊光,林鹏,李蒲健,等.李家峡拱坝复杂地基处理效果和反馈分析[J].岩石力学与工程学报,2008,27(5):902-912.
[2]周维垣,杨若琼,林鹏,等.李家峡大坝坝肩整体稳定反分析[R].北京:清华大学,2007.
[3]王进廷,杨剑,王吉焕,等.二滩拱坝应力仿真及参数敏感性分析[J].水利学报,2007,38(7):832-837.
[4]张冲,王仁坤,汤雪娟.溪洛渡特高拱坝蓄水初期工作状态评价[J].水利学报,2016,47(1):85-93.
[5]樊启祥,周绍武,李炳锋.溪洛渡特高拱坝建设的岩石工程关键技术[J].岩石力学与工程学报,2012,31(10):1998-2015.
[6]黄志鹏,董燕军,廖年春,等.锦屏一级水电站左岸开挖高边坡变形监测分析[J].岩土力学,2012,33(S2):235-242.
[7]王仁坤.我国特高拱坝的建设成就与技术发展综述[J].水利水电科技进展,2015,35(5):13-19.
[8]丁陆军.国内外拱坝体型优化研究现状及发展[J].长江科学院院报,2013,30(3):61-65.
[9]王仁坤,张冲,陈丽萍,等.特高拱坝结构安全度再评价[J].长江科学院院报,2014,31(11):136-142+148.
[10]李静,陈健云,白卫峰,等.地震作用下高拱坝损伤开裂分析[J].应用力学学报,2010,27(1):125-129+228.
[11]蔡建国,朱奕锋,江超,等.基于应力比值法的张弦结构动力放大系数研究[J].建筑结构学报,2015,36(1):116-126.
[12]马洪琪.我国坝工技术的发展与创新[J].水力发电学报,2014,33(6):1-10.
[13]魏鹏,叶林,李林峰,等.地震作用下的电梯井结构与拱坝坝体的耦联分析[J].水资源与水工程学报,2009,20(6):133-136.
[14]吴从晓,周云,吴从永,等.高位层间隔震结构电梯井核心筒剪力墙处理方法研究[J].振动与冲击,2011,30(10):77-81.
[15]李守义,周伟,苏礼邦,等.基于ANSYS的拱坝等效应力研究[J].水力发电学报,2007,26(5):38-41.
[16]班宏泰,覃文文,赵昕,等.基于ANSYS优化设计的岩体参数反演分析[J].水利水电科技进展,2009,29(S1):58-61.
[17]吴蓂高.世界上坝高在200m以上的双曲拱坝[J].水利水电科技进展,2001,21(2):66.
[18]刘鹏,李守义,赵珍,等.高拱坝坝后式电梯井顶部连接方式探究[J].水资源与水工程学报,2017,28(2):147-151+155.
[19]霍越群,赵光宇.利用ANSYS Solid65单元分析混凝土结构[C]//吉林省土木建筑学会2011年学术年会论文集,2011.
[20]邹超英,苏志敏,曾海军,等.拱坝有限元分析网格剖分方案研究[J].南水北调与水利科技,2011,9(1):47-49+109.
[21]刘鹏.高拱坝坝后电梯井应力分布规律研究[D].西安:西安理工大学,2018.
[22]孔宪京,许贺,邹德高,等.不同激振方向下动水压力对高面板坝面板动应力的影响[J].水利学报,2016,47(9):1153-1159.
[23]国家能源局.水电工程水工建筑物抗震设计规范:NB35047-2015[S].北京:中国电力出版社,2015.
[24]李平,薄景山,孙有为,等.场地类型对反应谱平台值的影响[J].地震工程与工程振动,2011,31(1):25-29.
[2]周维垣,杨若琼,林鹏,等.李家峡大坝坝肩整体稳定反分析[R].北京:清华大学,2007.
[3]王进廷,杨剑,王吉焕,等.二滩拱坝应力仿真及参数敏感性分析[J].水利学报,2007,38(7):832-837.
[4]张冲,王仁坤,汤雪娟.溪洛渡特高拱坝蓄水初期工作状态评价[J].水利学报,2016,47(1):85-93.
[5]樊启祥,周绍武,李炳锋.溪洛渡特高拱坝建设的岩石工程关键技术[J].岩石力学与工程学报,2012,31(10):1998-2015.
[6]黄志鹏,董燕军,廖年春,等.锦屏一级水电站左岸开挖高边坡变形监测分析[J].岩土力学,2012,33(S2):235-242.
[7]王仁坤.我国特高拱坝的建设成就与技术发展综述[J].水利水电科技进展,2015,35(5):13-19.
[8]丁陆军.国内外拱坝体型优化研究现状及发展[J].长江科学院院报,2013,30(3):61-65.
[9]王仁坤,张冲,陈丽萍,等.特高拱坝结构安全度再评价[J].长江科学院院报,2014,31(11):136-142+148.
[10]李静,陈健云,白卫峰,等.地震作用下高拱坝损伤开裂分析[J].应用力学学报,2010,27(1):125-129+228.
[11]蔡建国,朱奕锋,江超,等.基于应力比值法的张弦结构动力放大系数研究[J].建筑结构学报,2015,36(1):116-126.
[12]马洪琪.我国坝工技术的发展与创新[J].水力发电学报,2014,33(6):1-10.
[13]魏鹏,叶林,李林峰,等.地震作用下的电梯井结构与拱坝坝体的耦联分析[J].水资源与水工程学报,2009,20(6):133-136.
[14]吴从晓,周云,吴从永,等.高位层间隔震结构电梯井核心筒剪力墙处理方法研究[J].振动与冲击,2011,30(10):77-81.
[15]李守义,周伟,苏礼邦,等.基于ANSYS的拱坝等效应力研究[J].水力发电学报,2007,26(5):38-41.
[16]班宏泰,覃文文,赵昕,等.基于ANSYS优化设计的岩体参数反演分析[J].水利水电科技进展,2009,29(S1):58-61.
[17]吴蓂高.世界上坝高在200m以上的双曲拱坝[J].水利水电科技进展,2001,21(2):66.
[18]刘鹏,李守义,赵珍,等.高拱坝坝后式电梯井顶部连接方式探究[J].水资源与水工程学报,2017,28(2):147-151+155.
[19]霍越群,赵光宇.利用ANSYS Solid65单元分析混凝土结构[C]//吉林省土木建筑学会2011年学术年会论文集,2011.
[20]邹超英,苏志敏,曾海军,等.拱坝有限元分析网格剖分方案研究[J].南水北调与水利科技,2011,9(1):47-49+109.
[21]刘鹏.高拱坝坝后电梯井应力分布规律研究[D].西安:西安理工大学,2018.
[22]孔宪京,许贺,邹德高,等.不同激振方向下动水压力对高面板坝面板动应力的影响[J].水利学报,2016,47(9):1153-1159.
[23]国家能源局.水电工程水工建筑物抗震设计规范:NB35047-2015[S].北京:中国电力出版社,2015.
[24]李平,薄景山,孙有为,等.场地类型对反应谱平台值的影响[J].地震工程与工程振动,2011,31(1):25-29.
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