Seismic response of ground powerhouse of hydropower station based on different free field construction methods with oblique incidence of SV wave
WANG Fei1, SONG Zhiqiang1, LIU Yunhe1, ZHANG Jianfeng2
1.State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology,
Xi’an 710048, China;
2.China Three-Gorge Projects Development Co., Ltd., Chengdu 610041, China
Abstract：Aiming at problems of oblique incidence being seldom considered in near-fault ground motion input and existing different free-field construction methods, the accuracy of different free-field construction methods and their influences on seismic response of ground hydropower house were studied. Firstly, the total wave field was decomposed into ingoing and outgoing fields. 3 kinds of free fields on each foundation border surface were analyzed based on the principle of wave field superposition. The equivalent nodal load formula corresponding to each border surface free field was derived, and the oblique incidence input of plane SV wave was realized combining with boundary conditions.Free-field of the whole foundation under 3 oblique incidences and its calculation accuracy relative to the analytical solution were analyzed. It was shown that when outgoing fields of bottom and right border of foundation are not considered, the calculation error is large;when they are considered, the calculation error is very small, and the maximum error is only -3.8%.Secondly, effects of pulse type and non-pulse ground motions on seismic response of the hydropower house under 3 kinds of free field construction methods were studied. The results showed that the total input energy and damage energy dissipation of the powerhouse have larger increase without considering outgoing fields of bottom and right border of foundation to cause extensive damage of draft tube structure at lower part of the power house and obvious change of the proportion of various energy in the total input energy;under the same free field construction method, the damage ability of pulse type ground motion to the powerhouse is stronger, so attention should be paid to the aseismic design of the powerhouse near the fault area.
王飞1,宋志强1,刘云贺1,张剑峰2. SV波斜入射不同自由场构建方法下水电站地面厂房地震响应研[J]. 振动与冲击, 2021, 40(7): 9-18.
WANG Fei1, SONG Zhiqiang1, LIU Yunhe1, ZHANG Jianfeng2. Seismic response of ground powerhouse of hydropower station based on different free field construction methods with oblique incidence of SV wave. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(7): 9-18.
［1］晏志勇，王斌，周建平，等．汶川地震灾区大中型水电工程震损调查与分析［M］．北京：中国水利水电出版社，2009.
［2］黑灿，伍鹤皋，石长征，等.网架屋面对水电站地面厂房地震响应的影响［J］. 中国农村水利水电，2016(7):116-120.
HEI Can, WU Hegao, SHI Changzheng, et al. Influence of grid roof to seismic response of ground hydropower house［J］. China Rural Water and Hydropower, 2016(7):116-120.
［3］郝军刚，胡蕾，伍鹤皋，等．罕遇地震作用下水电站厂房上部结构破坏模式研究［J］．振动与冲击，2016，35(3):55-61．
HAO Jungang, HU Lei,WU Hegao, et al.Failure modes of hydropower house superstructure under rare earthquake action［J］.Journal of Vibration and Shock, 2016, 35(3):55-61.
［4］张启灵，伍鹤皋，李端有.水电站地面厂房抗震措施研究［J］. 水力发电学报，2012,31(5): 184-190.
ZHANG Qiling, WU Hegao, LI Duanyou. Aseismic measure of surface hydropower house［J］.Journal of Hydroelectric Engineering, 2012, 31(5): 184-190.
［5］ZHANG L J, ZHANG H Y, JI Y X, et al. Whiplash effect on hydropower house during an earthquake［J］. International Journal of Structural Stability and Dynamics, 2014, 14(4): 1450007.
［6］YANG D X, WANG W. Nonlocal period parameters of frequency content characterization for near-fault ground motions［J］. Earthquake Engineering & Structural Dynamics, 2012,41(13):1793-1811.
［7］YADOLLAH Y, MOHAMMAD A. Seismic vulnerability of gravity dams in near-fault areas［J］. Soil Dynamics and Earthquake Engineering, 2017, 102:15-24.
［8］WANG G H, ZHANG S R, WANG C, et al. Seismic performance evaluation of dam-reservoir-foundation systems to near-fault ground motions［J］.Natural Hazards,2014, 72(2):651-674.
［9］张社荣，王宽，王高辉，等. 近断层地震动方向性效应对混凝土重力坝累积损伤特性的影响［J］. 地震工程与工程振动，2014,34(1):44-53.
ZHANG Sherong,WANG Kuan, WANG Gaohui, et al.Effects of the directivity of near fault ground motions on accumulated damage of concrete gravity dams［J］. Earthquake Engineering and Engineering Dynamics, 2014,34(1):44-53.
［10］邹德高，韩慧超，孔宪京，等. 近断层地震动作用下面板堆石坝的加速度分布系数［J］. 水利学报, 2018, 49(10):1236-1242.
ZOU Degao, HAN Huichao, KONG Xianjing, et al. Acceleration distribution behavior of concrete face rockfill dams in the near-fault region［J］. Journal of Hydraulic Engineering, 2018, 49(10):1236-1242.
［11］SIGAKI T, KIYOHARA K, SONO Y, et al. Estimation of earthquake motion incident angle at rock site［C］// 12th World Conference Earthquake Engineering. Auckland: WCEE, 2000.
［12］杜修力, 徐海滨, 赵密. SV波斜入射下高拱坝地震反应分析［J］. 水力发电学报, 2015, 34(4):139-145.
DU Xiuli, XU Haibin, ZHAO Mi. Analysis on seismic responses of high arch dam to SV waves of oblique incidence［J］. Journal of Hydroelectric Engineering, 2015, 34(4): 139-145.
［13］徐海滨，杜修力，赵密，等. 地震波斜入射对高拱坝地震反应的影响［J］. 水力发电学报,2011,30(6):159-165.
XU Haibin, DU Xiuli, ZHAO Mi, et al. Effect of oblique incidence of seismic waves on seismic responses of high arch dam［J］. Journal of Hydroelectric Engineering, 2011,30(6):159-165.
［14］苑举卫，杜成斌，刘志明. 地震波斜入射条件下重力坝动力响应分析［J］. 振动与冲击，2011,30(7):120-126.
YUAN Juwei, DU Chengbin, LIU Zhiming. Time-domain seismic response for gravity dam to obliquely incident and seismic waves［J］. Journal of Vibration and Shock, 2011, 30(7):120-126.
［15］孙纬宇，汪精河，严松宏，等.SV 波斜入射下河谷地形地震动分布特征分析［J］. 振动与冲击，2019,38(20): 237-243.
SUN Weiyu, WANG Jinghe, YAN Songhong, et al. Characteristic analysis of ground motions of a canyon topography under obliquely incident SV waves［J］. Journal of Vibration and Shock, 2019, 38(20): 237-243.
［16］黄景琦，杜修力，田志敏，等.斜入射SV波对地铁车站地震响应的影响［J］. 工程力学，2014, 31(9):81-88.
HUANG Jingqi, DU Xiuli, TIAN Zhimin, et al. Effect of the oblique incidence of seismic SV waves on the seismic response of subway station structure［J］. Engineering Mechanic, 2014,31(9):81-89.
［17］HUANG J Q, DU X L, JIN L, et al. Impact of incident angles of P waves on the dynamic responses of long lined tunnels［J］. Earthquake Engineering & Structural Dynamics, 2016,45(15):2435-2454.
［18］刘晶波，吕彦东. 结构-地基动力相互作用问题分析的一种直接方法［J］. 土木工程学报，1998,31(3):55-64.
LIU Jingbo, L Yandong. A direct method for analysis of dynamic soil-structure interaction［J］. China Civil Engineering Journal, 1998,31(3):55-64.
［19］王洋洋，景月岭，周召虎.考虑地震波斜入射作用的坝后式厂房动力响应分析［J］. 水电能源科学，2019,37(5): 45-48.
WANG Yangyang, JING Yueling, ZHOU Zhaohu. Dynamics response analysis of power house at dam toe under obliquely incident waves［J］. Water Resources and Power, 2019,37(5): 45-48.
［20］李明超，张佳文，张梦溪，等.地震波斜入射下混凝土重力坝的塑性损伤响应分析［J］. 水利学报，2019,50(11):1326-1338.
LI Mingchao, ZHANG Jiawen, ZHANG Mengxi, et al. Plastic damage response analysis of concrete gravity damdue to obliquely incident seismic waves［J］. Journal of Hydraulic Engineering, 2019,50(11):1326-1338.
［21］SONG Z Q, WANG F, LI Y L, et al. Nonlinear seismic responses of the powerhouse of a hydropower station under near-fault plane P-wave oblique incidence［J］. Engineering Structures, 2019, 199:109613.
［22］何建涛，马怀发，张伯艳，等. 黏弹性人工边界地震动输入方法及实现［J］. 水利学报，2010，41(8):960-969.
HE Jiantao, MA Huaifa, ZHANG Boyan, et al. Method and realization of seismic motion input of viscous-spring boundary［J］. Journal of Hydraulic Engineering, 2010, 41(8): 960-969.
［23］刘云贺，张伯艳，陈厚群. 拱坝地震输入模型中黏弹性边界与黏性边界的比较［J］. 水利学报，2006，37(6):758-763.
LIU Yunhe, ZHANG Boyan, CHEN Houqun. Comparison of spring-viscous boundary with viscous boundary for arch dam seismic input model［J］. Journal of Hydraulic Engineering, 2006,37(6):758-763.
［24］王飞.近断层地震动斜输入作用下水电站厂房非线性地震响应研究［D］. 西安：西安理工大学，2019.
［25］水工建筑物抗震设计标准:GB 51247—2018［S］.北京：中国计划出版社, 2018.
［26］邹德高，韩慧超，孔宪京，等．近断层脉冲型地震动作用下面板堆石坝的动力响应［J］．水利学报，2017，48(1): 78-85．
ZOU Degao,HAN Huichao,KONG Xianjing,et al. Seismic response of a concrete-faced rockfill damto near-fault pulse-like ground motions［J］.Journal of Hydraulic Engineering, 2017,48(1):78-85.
［27］王博，刘伯权，吴涛，等.长周期地震动低频脉冲特性及反应谱分析［J］. 地震工程与工程振动，2018,38(3):142-151.
WANG Bo, LIU Boquan, WU Tao, et al. Analysis of low-frequency pulse characteristics and response spectrum for long-period ground motions［J］. Earthquake Engineering and Engineering Dynamics, 2018, 38(3):142-151.
［28］混凝土结构设计规范:GB 50010—2010［S］.北京：中国建筑工业出版社，2010.
［29］KRJCINOVIC D, FONSEKA G U.The continuous damage theory of brittle materials,part 1:general theory［J］. Journal of Applied Mechanics, 1981,48(4):809-815.
［30］SONG Z Q, SU C H. Computation of rayleigh damping coefficients for the seismic analysis of a hydro-powerhouse［J］. Shock and Vibration, 2017,2017:1-11.
［31］温凌燕，娄宇，聂建国.结构大震弹塑性时程反应分析中的能量反应分析［J］. 土木工程学报，2014,47(5): 1-8.
WEN Lingyan, LOU Yu, NIE Jianguo.Energy-based analysis in elastic-plastic time-history analysis of structure under large earthquake［J］. China Civil Engineering Journal, 2014,47(5): 1-8.
