紫坪铺面板堆石坝汶川地震永久变形实测结果分析

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英文篇名：Analysis on Permanent Deformation Monitoring Data of Zipingpu Concrete Faced Rockfill Dam after Wenchuan Earthquake 中文刊名：水力发电 英文刊名：Water Power 作者：章为民 ; 陈生水 英文作者：Zhang Weimin ; Chen Shengshui(Nanjing Hydraulic Research Institute ; Nanjing Jiangsu 210024) 中文关键词：汶川地震 ; 永久变形 ; 分区震陷率 ; 坝坡变形矢量 ; 抗震加固 ; 紫坪铺面板堆石坝 英文关键词：Wenchuan Earthquake ; permanent deformation ; regional settlement rate ; slope deformation vector ; seismic reinforcement ; Zipingpu Concrete Face Rockfill Dam 出版日期：2010-08-12 机构：南京水利科学研究院; 年：2010 期：08 出版单位：水力发电

摘要

分析了汶川大地震紫坪铺面板堆石坝永久变形实测结果。研究表明,大坝顶部区产生的永久沉降最大,而且在永久沉降变形构成中占主要的部分。地震后紫坪铺大坝外形轮廓均在地震前外形轮廓之内,坝坡地震永久变形矢量均指向坝内,表明大坝地震后整体是收缩的,有利于大坝的整体稳定。建议了土石坝地震分区震陷率的概念与方法,论证了坝顶加固的土石坝抗震加固技术的科学性与合理性。
The permanent deformation monitoring data of Zipingpu Dam after Wenchuan Earthquake were analyzed herein.The top area of the dam produces a largest permanent settlement which constituting a major part in the total dam permanent deformation.The dam contour after earthquake is within the scope of the previous,and all vectors of slope permanent defor mation point to the inside of the dam body,shows that the dam after the earthquake as a whole is shrinking,and it is conducive to the stability of dam.The regional settlement rate method is used in the analysis and is effective.The analysis also demon strates that the crest reinforcement is a scientific and rational seismic reinforcement technology for embankment dam.

引文

[1]宋胜武,蔡德文.汶川大地震紫坪铺混凝土面板堆石坝震害现象与变形监测分析[J].岩石力学与工程学报,2009,28(4):840-849.
    [2]陈生水,霍家平,章为民.“5.12”汶川地震对紫坪铺混凝土面板坝的影响及原因分析[J].岩土工程学报,2008,30(6):795-801.
    [3]关志诚,宋彦刚,蔡德文.紫坪铺高面板坝“5.12”震害调查与安全状态评价[J].水利水电技术,2008,39(9):36-43.