Effects of oblique incident wave time history determination method based on design ground motion on seismic response of earth-rock dam

PDF(2155 KB)

Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (19) : 80-88.

WANG Fei1, SONG Zhiqiang1, LIU Yunhe1, ZHANG Jianfeng2

Author information +

History +

Abstract

The oblique incident wave time history determination method based on design ground motion has significant influences on seismic response of earth-rock dam. Here, this common method and its applicability were analyzed to obtain time histories of oblique incident P and SV waves using 1/2 amplitude modulation of horizontal design ground motion of homogeneous rock body on flat ground surface. On the premise of oblique incidence combined P wave and SV wave, considering the joint action of the two waves on free field of semi-infinite space, the expression of free field response component at any point in the space was established. Based on the principle of free field response component of control point being the same as the design ground motion component, the functional relationship between time history of incident wave and incident angle was established. A method to determine time history of incident wave based on 2D design ground motion was proposed. The deviation between the ground surface free field response of semi-infinite space and seismic response of bed rock-overburden-earth rock dam system relative to the proposed method was analyzed when time history of oblique incident wave was determined according to the assumption of vertical incidence. The results showed that under any non-vertical incidence angle, free field response of control point deviates from design ground motion more seriously, and the change law of acceleration of earth rock dam crest with incidence angle contains the contribution of ground motion intensity variation, but it is not the result under action of design ground motion; the ground surface free field displacements obtained with the proposed method agree well with horizontal and vertical components of design ground motion, and can correctly reflect the non-uniform motion caused by oblique incidence angle; effects of oblique incidence angle on seismic response of earth rock dam can be analyzed on the premise of keeping design ground motion intensity unchanged.

Key words

time history of oblique incident wave / design ground motion / free-field / earth-rock dam / seismic response

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

WANG Fei, SONG Zhiqiang, LIU Yunhe, ZHANG Jianfeng. Effects of oblique incident wave time history determination method based on design ground motion on seismic response of earth-rock dam[J]. Journal of Vibration and Shock, 2021, 40(19): 80-88

References

［1］中华人民共和国水利部. 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.
［2］陈厚群. 坝址地震动输入探讨［J］. 水利学报, 2006, 37(12):1417-1423.
CHEN Houqun. Discussion on seismic input mechanism at dam site［J］. Journal of Hydraulic Engineering, 2006, 37(12):1417-1423.
［3］杜修力, 徐海滨，赵密. SV波斜入射下高拱坝地震响应分析［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.
［4］赵密, 孙文达，高志懂，等. 阶梯地形成层场地斜入射地震动输入方法［J］. 工程力学, 2019, 36(12): 62-68.
ZHAO Mi, SUN Wenda, GAO Zhidong, et al. Input method of obliquely incident earthquake for step-shaped layered site［J］. Engineering Mechanics, 2019, 36(12): 62-68.
［5］岑威钧，袁丽娜，袁翠平，等. 地震波斜入射对高面板坝地震反应的影响［J］. 地震工程学报, 2015, 37(4): 926-932.
CEN Weijun, YUAN Lina, YUAN Cuiping, et al. Influence on seismic response of high concrete face rockfill dams due to obliquely incident seismic waves［J］. China Earthquake Engineering Journal, 2015, 37(4): 926-932.
［6］张树茂, 周晨光, 邹德高, 等. 地震波倾斜入射对土石坝动力反应的影响［J］. 水电能源科学, 2014, 32(8):72-76.
ZHANG Shumao, ZHOU Chenguang, ZOU Degao, et al. Influence of oblique incidence of seismic waves on dynamic response to rock-fill dam［J］. Water Resources and Power, 2014, 32(8):72-76.
［7］王飞, 宋志强, 卢韬. 近断层地震动斜输入下水电站厂房非线性地震响应研究［J］. 振动与冲击, 2020, 39(5): 63-73.
WANG Fei, SONG Zhiqiang, LU Tao. Nonlinear seismic responses of a hydropower house under near-fault ground motions oblique input［J］. Journal of Vibration and Shock, 2020, 39(5): 63-73.
［8］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):258-265.
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):258-265.
［9］SUN B B, DENG M J, ZHANG S R, et al. Inelastic dynamic analysis and damage assessment of a hydraulic arched tunnel under near-fault SV waves with arbitrary incoming angles［J］. Tunnelling and Underground Space Technology, 2020,104：103523.
［10］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): 1236-1339.
LI Mingchao, ZHANG Jiawen, ZHANG Mengxi, et al. Plastic damage response analysis of concrete gravity dam due to obliquely incident seismic waves［J］. Journal of Hydraulic Engineering, 2019, 50(11): 1236-1339.
［11］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. 
［12］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.
［13］苑举卫, 杜成斌, 杜志明. 基于设计地震动的地震波斜入射波动输入研究［J］. 四川大学学报(工程科学版), 2010, 42(5):50-55.
YUAN Juwei, DU Chengbin, DU Zhiming. Study on oblique wave input based on design seismic component［J］. Journal of Sichuan University (Engineering Science Edition), 2010, 42(5):50-55.
［14］DUN J M, CHANG C Y. Nonlinear analysis of stress and strain in soils［J］. Journal of the Soil Mechanics and Foundations Division, 1970, 96(5): 1629-1653.
［15］沈珠江, 徐刚. 堆石料的动力变形特性［J］. 水利水运科学研究, 1996(2):143-150.
SHEN Zhujiang, XU Gang. Deformation behavior of rock materials under cyclic loading［J］. Hydro-Science and Engineering, 1996(2):143-150.
［16］中华人民共和国国家质量监督检验检疫总局. 中国地震动参数区划图: GB 18306—2015 ［S］. 北京：中国标准出版社，2015.
［17］FAN G, ZHANG L M, LI X Y, et al. Dynamic response of rock slopes to oblique incident SV waves［J］. Engineering Geology, 2018, 247:94-103.
［18］郭胜山, 陈厚群, 李德玉, 等. 重力坝与坝基体系地震损伤破坏分析［J］. 水利学报，2013, 44(11):1352-1358.
GUO Shengshan, CHEN Houqun, LI Deyu, et al. Seismic damage and failure analysis of gravity dam and foundation system［J］. Journal of Hydraulic Engineering, 2013, 44(11):1352-1358.
［19］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.
［20］LIU J B, DU Y X, DU X L, et al. 3D Viscous-spring artificial boundary in time domain［J］. Earthquake Engineering and Engineering Vibration, 2006, 5(1): 93-102.
［21］孔宪京, 周晨光, 邹德高, 等. 高土石坝-地基动力相互作用的影响研究［J］. 水利学报, 2019, 50(12): 1417-1432.
KONG Xianjing, ZHOU Chenguang, ZOU Degao, et al. Influence of the dynamic interaction between high rockfill dam and foundation［J］. Journal of Hydraulic Engineering, 2019, 50(12): 1417-1432.
［22］邹德高, 隋翊, 周晨光, 等. 非岩性地基条件下核岛厂房-桩-土非线性动力相互作用特性研究［J］. 核动力工程, 2020, 41(2):59-66.
ZOU Degao, SUI Yi, ZHOU Chenguang, et al. Nonlinear dynamic analysis of soil-pile interactions of nuclear island with nonlithological foundation［J］. Nuclear Power Engineering, 2020, 41(2):59-66.
［23］楼梦麟, 潘旦光, 范立础. 土层地震反应分析中侧向人工边界的影响［J］. 同济大学学报, 2003, 31(7):757-761.
LOU Menglin, PAN Danguang, FAN Lichu. Effect of vertical artificial boundary on seismic response of soil layer［J］. Journal of Tongji University, 2003, 31(7):757-761.
［24］余翔, 孔宪京, 邹德高, 等. 覆盖层上土石坝非线性动力响应分析的地震波动输入方法［J］. 岩土力学, 2018, 39(5):1858-1867.
YU Xiang, KONG Xianjing, ZOU Degao, et al. Seismic wave input method for nonlinear dynamic analysis of earth dam built on overburden［J］. Rock and Soil Mechanics, 2018, 39(5):1858-1867.