Study on Fatigue Damage of Gravity Dam Under Combined Effect of Mainshock and Aftershock Seismic Based on P-D-ε Curve of Hydraulic Concrete

被引：0
|
作者：
机构：
来源：
Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | 2022年 / 42卷 / 04期
关键词：
Concretes - Cracks - Earthquakes - Fracture - Gravity dams;
D O I：
10.16450/j.cnki.issn.1004-6801.2022.04.013
中图分类号：
学科分类号：
摘要：
A strong mainshock seismic usually triggers numerous aftershocks within a short period. The mainshock will cause damage to dam body， and aftershocks have a potential to cause additional damage to mainshock-damaged concrete gravity dam. However， most studies on effect of mainshock and aftershock seismic to dam only consider the mainshock and one aftershock so in order to comprehensively evaluate the damage of numerous aftershocks seismic， a method based on concrete damage plasticity model combined with the P-D-ε curve of hydraulic concrete and hydraulic fracturing effect is taken into account in this study. Therefore， the accumulated damage of concrete gravity dam under single mainshock and main-aftershock seismic sequences are presented. The result show that the structure of dam may be slightly cracked with moderate damage under single mainshock， but aftershock seismic and hydraulic fracturing effect have a significant impact on the accumulated damage of dam body. The main damage area of dam body is concentrated the near of dam heel， the surface of foundation and the upstream break point， with the increase of the number of aftershocks the penetrating crack formation. © 2022 Journal of Vibration,Measurement & Diagnosis. All rights reserved.
引用
收藏
页码：710 / 717
页数：7
相关论文
共 27 条
  • [1] JADOON T R, ALI M K, HUSSAIN S, Et al., Sustaining power production in hydropower stations of developing countries, Sustainable Energy Technologies and Assessments, 37, pp. 621-637, (2020)
  • [2] RAHIMI H, ARDAKANI M K, AHMADIAN M, Et al., Multi-reservoir utilization planning to optimize hydropower energy and flood control simultaneously, Environmental Processes, 7, 1, pp. 41-52, (2020)
  • [3] ZhAO S Y, FAN S L, CHEN J Y., Quantitative assessment of the concrete gravity dam damage under earthquake excitation using electro-mechanical impedance measurements, Engineering Structures, 191, 4, pp. 162-178, (2019)
  • [4] WU Kaitong, LI Wenxi, Disaster estimation of strong aftershocks, Earthquake Research in China, 4, pp. 368-373, (1995)
  • [5] CHEN Houqun, Consideration on seismic safety of dams in china after the Wenchuan earthquake, Strategic Study of CAE, 11, 6, pp. 44-53, (2009)
  • [6] BI J M, JIANG C S., Comparison of early aftershock forecasting for the 2008 Wenchuan MS8.0 earthquake, Pure and Applied Geophysics, 177, 1, pp. 9-25, (2020)
  • [7] JIA Ruo, JIANG Haikun, KANG Jianhong, Et al., Aftershock rate forecasting of the Qianguo seismic swarm based on the R-S model and parameter correlations analysis, Earthquake Research in China, 35, 3, pp. 431-444, (2019)
  • [8] CHEN Y I, LIU J Y, LAI H W., Assessment of space-time hazard of large aftershocks of the 2008 Mw7.9 Wenchuan earthquake, Pure and Applied Geophysics, 177, 1, pp. 27-36, (2020)
  • [9] SHI Haixia, MENG Lingyuan, LIU Jie, Et al., Analysis on characteristic of aftershock activity of the three M ≥8.0 huge earthquakes, Journal of Seismological Research, 38, 4, pp. 549-557, (2015)
  • [10] LU Dawei, LI Xiaojun, CUI Jianwen, Ground motion attenuation of the wenchuan aftershocks, Journal of Basic Science and Engineering, 18, pp. 138-151, (2010)
123