[1]罗力谦,张移,朱嘉健,等.乐昌峡大坝地震响应分析[J].华南地震,2021,41(03):55-62.[doi:10.13512/j.hndz.2021.03.08 ]
　LUO Liqian,ZHANG Yi,ZHU Jiajian,et al.Seismic Rsponse Analysis of Lechangxia Dam[J].,2021,41(03):55-62.[doi:10.13512/j.hndz.2021.03.08 ]
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乐昌峡大坝地震响应分析()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
41
期数:
2021年03期
页码:
55-62
栏目:
土木工程防震减灾
出版日期:
2021-09-20

文章信息/Info

Title:
Seismic Rsponse Analysis of Lechangxia Dam
文章编号:
1001-8662(2021)03-0055-08
作者:
罗力谦1; 张移2; 3; 4; 朱嘉健2; 3; 4; 姜慧3; 4; 5; 王立新3; 4; 5; 吴华灯2; 3; 4; 朱信华5
(1.广东粤海飞来峡水力发电有限公司,广东清远 511500;2.广东省地震局,广州 510070;3.中国地震局地震监测与减灾技术重点实验室,广州 510070;4.广东省地震预警与重大工程安全诊断重点实验室,广州 510070;5.深圳防灾减灾技术研究院,深圳 51800;6.广东粤海飞来峡水力发电有限公司乐昌峡分公司,韶关 512000)
Author(s):
LUO Liqian1; ZHANG Yi2; 3; 4; ZHU Jiajian2; 3; 4; JIANG Hui3; 4; 5;  WANG Lixin3; 4; 5; WU Huadeng2; 3; 4; ZHU Xinhua5
(1. Guangdong Yuehai Feilaixia Hydropower Generation Co., Ltd., Qingyuan 511500,China;2. Guangdong Earthquake Agency,Guangzhou 510070,China;3. CEA Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology,Guangzhou 510070,China;4. Guangdong Provincial Key Laboratory of Earthquake Early Warning and Safety Diagnosis of Major Projects,Guangzhou 510070,China;5. Shenzhen Academy of Disaster Prevention and Reduction,Shenzhen 518003,China;6. Guangdong Yuehai Feilaixia Hydropower Generation Co., Ltd. Lechangxia Branch,Shaoguan 512000,China)
关键词:
乐昌峡大坝; 粘弹性人工边界; 自振频率; 地震响应
Keywords:
Lechangxia Dam;  Viscoelastic artificial boundary;  Natural vibration frequency;  Earthquake response
分类号:
TB123; TV32
DOI:
10.13512/j.hndz.2021.03.08
文献标志码:
A
摘要:
乐昌峡大坝位于广东省韶关市乐昌市境内,建造时按照Ⅴ度区进行抗震设计,随着 2016年第五代地震动参数区划图的实施,该区设防烈度提高为 Ⅵ度,大坝在 Ⅵ度地震影响下是否安全需要进行分析?利用图纸资料建立了大坝的三维有限元模型,计算分析了多水位下特征坝段的频率和大坝的地震响应,结果表明:溢流坝段的频率小于两岸挡水坝段?地震作用下,大坝位移最大值出现在坝顶处,应力最大处出现在闸墩?牛腿及坝踵处,但均处于安全范围,证明大坝抗震性能良好;库水水位会显著影响大坝的频率及地震响应,在抗震设计时,应引起注意?
Abstract:
The Lechangxia Dam is located in Lechang City, Shaoguan City, Guangdong Province., and was constructed according to the seismic design of the V degree zone. With the implementation of the fifth-generationground motion parameter zoning map in 2016, the fortification intensity of this area has been increased to Ⅵdegree and whether the dam is safe under the influence of VI degree earthquake needs to be analyzed. By using thedrawing data,the article establishes a three-dimensional finite element model of the dam,calculates and analyzes the frequency of the characteristic dam section under multiple water levels and the seismic response of the dam. Theresults show that the frequency of the overflow dam section is less than that of the retaining dam sections on bothbanks. Under earthquake,the maximum displacement of the dam appears at the top of the dam,and the maximum stress appears at the piers,corbels and heels of the dam,but they are all in a safe range,which proves that thedam has good seismic performance. The reservoir water level will significantly affect the frequency and seismicresponse of the dam,which should be paid attention to during seismic design.

参考文献/References:

[1]宋晓春,姜慧,王立新,等 .新丰江水库大坝强震动监测及其动力特性分析 [J].华南地震, 2016,36(04):34-41. [2]陈厚群 .混凝土高坝强震震例分析和启迪 [J].水利学报, 2009(01):10-18. [3]中国国家标准化管理委员会 .中国地震动参数区划图: GB 18306-2015[S].北京:地震出版社, 2015. [4]中华人民共和国水利部 .水工混凝土结构设计规范: SL 191-2008[S].北京:中国水利水电出版社, 2008. [5]刘晶波,李彬 .三维黏弹性静 -动力统一人工边界 [J].中国科学:技术科学, 2005,35(9):966-980. [6]李彬 .地铁地下结构抗震理论分析与应用研究 [D].北京:清华大学, 2005. [7]国家能源局 .水电工程水工建筑物抗震设计规范: NB 35047-2015[S].北京:中国电力出版社, 2015. [8]中华人民共和国水利部 .水工建筑物荷载设计规范: SL744-2016[S].北京:中国水利水电出版社, 2016.

备注/Memo

备注/Memo:
收稿日期:2021-03-10
基金项目:广东省科技计划项目( 2018B020207011);广东省科技计划项目( 2017B030314082);广东省科技计划项目(2018B020208003)
作者简介:罗力谦(1974-),男,本科,工程师,主要从事水工结构抗震研究?
通信作者:张移( 1991-),男,硕士,助理工程师,主要从事结构抗震与结构健康监测研究? E-mail:movezhangsx@163.com

更新日期/Last Update: 2021-09-30