土耳其德里内尔拱坝在最大可信地震下的动力稳定性分析
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摘要
本文讨论了位于土耳其东北部克鲁赫河上正在建设中的高250m德里内尔拱坝。该拱坝建基面开挖施工已于2005年完成,大坝混凝土已经开始浇筑,预计将于2010年完成大坝混凝土浇筑。建成后,该坝混凝土总方量为330万m3,将是土耳其最高的拱坝,也是世界上最高的拱坝之一。本文详细讨论了大坝的抗震设计。重现期为10000年的安全评估地震的峰值加速度为0.35g。在该地震作用下,坝体中上部将出现沿水平施工缝的裂缝,带有键槽的灌浆横缝也将张开。于是,大坝顶部由于开裂而形成的混凝土坝块可能向水库方向发生位移,本文研究了该混凝土坝块可能出现的最大位移和转动位移。
The 250m high Deriner arch dam in Turkey,which is presently under construction on the Coruh River in north-eastern Turkey,is discussed.The foundation excavation was completed in 2005 and the concreting of the concrete blocks is in progress.It is expected that the dam made of conventional mass concrete will be completed in 2010.It will be the highest arch dam in Turkey.With a volume of about 3.3 million m~3,it will also be one of the largest arch dams in the world.Details about the seismic design of the dam are discussed.The safety evaluation earthquake with an average return period of 10 000 years has a peak ground acceleration of 0.35g.It is expected that cracks will form along horizontal lift joints in the central upper portion of the dam and that the grouted contraction joints provided with shear keys will open under this earthquake.Thus,concrete blocks might displace towards the reservoir in the top portion of the dam.The expected maximum displacement and rocking motion of such blocks are investigated.
The 250m high Deriner arch dam in Turkey,which is presently under construction on the Coruh River in north-eastern Turkey,is discussed.The foundation excavation was completed in 2005 and the concreting of the concrete blocks is in progress.It is expected that the dam made of conventional mass concrete will be completed in 2010.It will be the highest arch dam in Turkey.With a volume of about 3.3 million m~3,it will also be one of the largest arch dams in the world.Details about the seismic design of the dam are discussed.The safety evaluation earthquake with an average return period of 10 000 years has a peak ground acceleration of 0.35g.It is expected that cracks will form along horizontal lift joints in the central upper portion of the dam and that the grouted contraction joints provided with shear keys will open under this earthquake.Thus,concrete blocks might displace towards the reservoir in the top portion of the dam.The expected maximum displacement and rocking motion of such blocks are investigated.
引文
[1]Wieland M,Brenner P,Sommer P.Earthquake Resiliency of Large Concrete Dams:Damage,Repair,and StrengtheningConcepts[A],Q.83,Proceedings of the 21st International Congress on Large Dams[C],ICOLD,Montreal,Canada.2003
[2]Malla S,Wieland M.Simple Model for Safety Assessment of Cracked Concrete Dams Subjected to Strong Ground Shaking[A],Proceedings of the 21st International Congress on Large Dams[C],ICOLD,Montreal,Canada.2003
[3]ICOLD Bulletin 72.Selecting Seismic Parameters for Large Dams,Guidelines[Z],Committee on Seismic Aspects of DamDesign,ICOLD,Paris,1989
[4]Wieland M.Review of Seismic Design Criteria of Large Concrete and Embankment Dams[A],Proceedings of the Workshopon Seismic Aspects of Dams[C],Paper No.012-W4,73rd Annual Meeting of ICOLD,Tehran,Iran.2005
[5]Wieland M.Seismic Aspects of Dams[A],General Report,Q.83,Proceedings of the 21st International Congress on LargeDams[C],ICOLD,Montreal,Canada.2003
[6]ADINA R&D.Theory and Modeling Guide[R].Volume I:ADINA,Report ARD 03-7,ADINA R&D,Inc.,Watertown,USA,2003
[2]Malla S,Wieland M.Simple Model for Safety Assessment of Cracked Concrete Dams Subjected to Strong Ground Shaking[A],Proceedings of the 21st International Congress on Large Dams[C],ICOLD,Montreal,Canada.2003
[3]ICOLD Bulletin 72.Selecting Seismic Parameters for Large Dams,Guidelines[Z],Committee on Seismic Aspects of DamDesign,ICOLD,Paris,1989
[4]Wieland M.Review of Seismic Design Criteria of Large Concrete and Embankment Dams[A],Proceedings of the Workshopon Seismic Aspects of Dams[C],Paper No.012-W4,73rd Annual Meeting of ICOLD,Tehran,Iran.2005
[5]Wieland M.Seismic Aspects of Dams[A],General Report,Q.83,Proceedings of the 21st International Congress on LargeDams[C],ICOLD,Montreal,Canada.2003
[6]ADINA R&D.Theory and Modeling Guide[R].Volume I:ADINA,Report ARD 03-7,ADINA R&D,Inc.,Watertown,USA,2003
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