近断层P波斜入射下沥青混凝土心墙坝响应分析

PDF(3220 KB)

振动与冲击 ›› 2023, Vol. 42 ›› Issue (7) : 245-253.

论文

宋志强，刘琳，王飞，刘云贺

作者信息 +

Response analysis of asphalt concrete core dam under oblique incidence of near-fault P-wave

SONG Zhiqiang, LIU Lin, WANG Fei, LIU Yunhe

Author information +

文章历史 +

摘要

近断层地震动的断层距一般在20km以内，此范围内的地震波由于在不同岩层介质中的反射和透射次数远小于远断层地震动，到达地表时一般不满足垂直入射假定。关于沥青混凝土心墙坝抗震研究目前少有考虑近断层地震动斜输入的影响。本文选择合适的近断层脉冲型地震动记录，推导了P波斜入射时二维地基侧面和底面边界完整波场分解、叠加方案下的等效节点力公式，通过近断层P波波动斜输入模拟沥青混凝土心墙坝遭受近场地震波作用过程，分析了近断层P波脉冲特性和输入角度对沥青混凝土心墙加速度、应力、曲率和坝体永久变形的影响规律。结果表明，地震波斜入射下心墙和坝体响应与垂直入射相比存在明显差异，近断层地震动脉冲特性亦对各响应影响显著。

Abstract

The distance between the faults of near-fault ground motions is generally within 20km. Since the reflection and transmission times of seismic waves in different rock formations are much smaller than those of far-fault ground motions, they generally do not meet the assumption of vertical incidence when they reach the surface. At present, few studies on the seismic resistance of asphalt concrete core dams consider the impact of near-fault ground motion oblique input. This paper selects the appropriate near-fault pulse-type ground motion records, and derives the equivalent nodal force formula under the complete wavefield decomposition scheme of the two-dimensional foundation side and bottom boundary when the P wave is incident obliquely, and simulates asphalt concrete through the near-fault P wave wave oblique input The core wall dam is subjected to near-field seismic waves. The influence of the near-fault P-wave pulse characteristics and input angle on the acceleration, stress, curvature of the asphalt concrete core wall and permanent deformation of the dam is analyzed. The results show: Comparing the dynamic response of the core wall and the dam when the seismic wave is incident vertically and obliquely, there are obvious differences. The characteristics of the near-fault ground motion pulse have a significant impact on each response.

导出引用

宋志强，刘琳，王飞，刘云贺. 近断层P波斜入射下沥青混凝土心墙坝响应分析[J]. 振动与冲击, 2023, 42(7): 245-253

SONG Zhiqiang, LIU Lin, WANG Fei, LIU Yunhe. Response analysis of asphalt concrete core dam under oblique incidence of near-fault P-wave[J]. Journal of Vibration and Shock, 2023, 42(7): 245-253

参考文献

[ 1 ] 饶锡保,程展林,谭凡,等. 碾压式沥青混凝土心墙工程特性研究现状与对策[J]. 长江科学院院报,2014，31(10)：51-57.
RAO Xibao, CHENG Zhanlin, TAN Fan,et al. Research Status and Countermeasures of Engineering Properties of Rolled Asphalt Concrete Core Wall [J]. Journal of Yangtze River Scientific Research Institute, 2014, 31(10): 51-57.
[ 2 ] 孔宪京, 陈健云, 邹德高. 高坝抗震安全理论发展趋势研究[J]. 水力发电学报, 2020, 39(7): 1-11.
KONG Xianjing, CHEN Jianyun, ZOU Degao. Study on development trend of seismic safety theory for high dams[J]. Journal of Hydroelectric Engineering, 2020, 39(7): 1-11.
[ 3 ] 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.
[ 4 ] YANG D X,WANG W. Nonlocal period parameters offrequency content characterization for near-fault ground motions [J].Earthquake Engineering and StructuralDynamics,2012,41(13) : 1793-1811.
[ 5 ] 王飞, 宋志强, 刘云贺, 张剑峰. 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究[J]. 振动与冲击, 2021, 40(07): 9-18.
WANG Fei, SONG Zhiqiang, LIU Yunhe, ZHANG Jianfeng. Seismic response of ground powerhouse of hydropower station based ondifferent free field construction methods with oblique incidence of SV wave[J]. Journal of Vibration and Shock, 2021, 40(07): 9-18.
[ 6 ] 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+1349.
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+1349.
[ 7 ] Soumya Gorai,Damodar Maity. Seismic response of concrete gravity dams under near field and far field ground motions[J]. Engineering Structures,2019,196.
[ 8 ] 张社荣,王宽,王高辉,谭尧升.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(01):44-53.
ZHANG Sherong, WANG Kuan, WANG Gaohui, et al. Effects of the directivity of near fault ground motions on accumulated damageof concrete gravity dams [J].Earthquake Engineering and Engineering Dynamics, 2014, 34(01): 44-53.
[ 9 ] 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(04):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(04): 139-145.
[ 10 ] 苑举卫, 杜成斌, 杜志明. 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(07): 120-126.
YUAN Ju-wei, DU Cheng-bin*, LIU Zhi-ming. Time-domain seismic response for gravity dam to obliquely incident and seismic waves[J]. Journal of Vibration and Shock, 2011, 30(7): 120-126.
[ 11 ] 姚虞, 王睿, 刘天云, 张建民. 高面板坝地震动非一致输入地震响应规律[J]. 岩土力学, 2018, 39(06): 2259-2266.
YAO Yu, WANG Rui, LIU Tian-yun, ZHANG Jian-min. Seismic response of high concrete face rockfill dams subject to non-uniform input motion[J]. Rock and Soil Mechanics, 2018, 39(06): 2259-2266.
[ 12 ] 张树茂. 地震波动入射方向对土石坝地震反应的影响研究[D]. 大连：大连理工大学，2014.
ZHANG Shu-mao. Research on the effect of incident directions of seismic waves on the dynamic response of rock-fill dam[D]. Dalian: Dalian University of Technology, 2014.
[ 13 ] ZOU D G,HAN H C,LIU J M,et al.Seismic failureanalysis for a high concrete face rockfill dam subjected tonear-fault pulse-like ground motions [J].Soil Dynamics and Earthquake Engineering,2017,98: 235-243．
[ 14 ] 张伯艳, 迟明杰, 陈红娟, 陈苏. 黏弹性人工边界在ABAQUS中的实现及地震动输入方法的比较研究[J].岩土力学与工程学报, 2020, 39(07): 1445-1457.
MA Shengjie, CHI Mingjie, CHEN Hongjuan, CHEN Su. Implementation of viscous-spring boundary in ABAQUS and comparative study on seismic motion input methods[J]. Chinese Journal of Rock Mechanics and Engineering, 2020, 39(07): 1445-1457.
[ 15 ] 张梁,朱海涛,梁建文等. 基于黏弹性边界的P波斜入射波场分解方法精度比较[J]. 地震工程与工程振动, 2020, 40(2): 177-186.
ZHANG Liang1, ZHU Haitao, LIANG Jianwen, BA Zhenning. Precision comparison of different field decomposition methods of obliqueincidence of P wave based on viscoelastic boundary[J]. Earthquake Engineering and Engineering Dynamics, 2020, 40(2): 177-186.
[ 16 ] 刘琳,宋志强,王飞,等. 近断层SV波斜入射下沥青混凝土心墙坝响应分析[J]. 振动与冲击, 2021, 40(21): 97-105.
LIU Lin, SONG Zhiqiang, WANG Fei, LIU Yunhe. Response Analysis of Asphalt Concrete Core Dam Under Oblique Incidence of Near-Fault P Wave[J]. Journal of Vibration and Shock, 2021, 40(21): 97-105.
[ 17 ] WANG Fei, SONG Zhiqiang, LIU Yunhe, LUO Bohua, Zhang Wenbing. Construction of the spatially varying ground motion field of a bedrock-overburden layer site and its influence on the seismic response of earth-rock dams[J]. Arabian Journal of Geosciences, 2021, 14：1914.
[ 18 ] WANG Fei, S Zhiqiang, Liu Yunhe, Luo Bohua. Seismic wave input method for high earth dams considering the transmission amplification effect of the bedrock–overburden interface[J]. Computers and Geotechnics, 2021, 130：103927
[ 19 ] 张如林, 楼梦麟. 基于FLAC3D的斜入射地震波作用的数值模拟方法研究[J]. 土木工程学报, 2010, 43(s1): 22-27.
ZHANG Rulin, LOU menglin. Study on numerical simulation of obliquely incident seismic waves based on FLAC3D[J]. China Civil Engineering Journal，2010, 43(s1): 22-27.
[ 20 ] 余翔, 孔宪京, 邹德高, 周扬. 覆盖层中混凝土防渗墙的三维河谷效应机制及损伤特性[J]. 水利学报, 2019, 50(09): 1123-1134.
YU Xiang, KONG Xianjing, ZOU Degao, ZHOU Yang. 3D valley effect mechanism and damage behavior of the concrete cut-off wall in overburden[J]. Journal of Hydraulic Engineering, 2019, 50(09): 1123-1134.
[ 21 ] 迟世春,吕小龙,贾宇峰.堆石料的动力残余应变模型[J].岩土工程学报,2016,38(02):370-376.
CHI Shi-chun, Lu Xiao-long, JIA Yu-feng. Model for dynamic residual strain behavior of rockfill materials [J]. Chinese Journal of Geotechnical Engineering, 2016, 38(02): 370-376.