|本期目录/Table of Contents|

[1]张建毅,薄景山,李 平,等.紧邻倾滑型强震地表破裂带场地的地震动分析*[J].地震研究,2019,42(04):465-473.
 ZHANG Jianyi,BO Jingshan,LI Ping,et al.Analysis of the Ground Motions adjacent to Dip-slip Type Earthquake Surface Rupture zone[J].Journal of Seismological Research,2019,42(04):465-473.
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紧邻倾滑型强震地表破裂带场地的地震动分析*(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
42
期数:
2019年04期
页码:
465-473
栏目:
出版日期:
2019-12-15

文章信息/Info

Title:
Analysis of the Ground Motions adjacent to Dip-slip Type Earthquake Surface Rupture zone
作者:
张建毅1薄景山12李 平1李孝波1
(1.防灾科技学院 地质工程学院,河北 三河 065201; 2.中国地震局工程力学研究所,黑龙江 哈尔滨 150080)
Author(s):
ZHANG Jianyi1BO Jingshan12LI Ping1LI Xiaobo1
(1.Department of Geological Engineering,Institute of Disaster Prevention,Sanhe 065201,Hebei,China)(2.Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,Heilongjiang,China)
关键词:
活动断层 地表破裂 地震动 避让距离
Keywords:
active fault faulting rupture ground motions setback distance
分类号:
P315.91
DOI:
-
摘要:
强震地表破裂对破裂带附近的建筑物造成巨大的破坏,如何在工程建设的场址选择中避开活断层是工程地质界和岩土工程抗震设计者关心的问题。利用汶川、玉树及数次强震断裂现场科考资料,基于破裂主要特征、模式、机理等构建了典型的倾滑型活动断层附近地质力学模型及工况,考虑贯通地表的基岩位错和强震动效应,结果表明:①在脉冲型地震动输入下,上盘均有明显的上盘效应,上盘效应外一定距离内有明显的“减震”作用; ②对于具有速度脉冲的波,在0.2 g、0.4 g地震动输入时,Amax在上盘20 m范围内显著增大,下盘10 m范围内增大; ③对于速度脉冲更明显的波,在0.2 g地震动输入时,Amax在上盘40 m范围内显著增大; 在0.4 g地震动输入时,Amax在上盘30 m范围内显著增大在下盘10~20 m范围内增大; ④应用地表地震动的参数合理分析确定了避让距离的数值,给出了一定解释。
Abstract:
Active faults surface ruptures often cause great damage to buildings near the ruptre zone.Therefore,how to avoid active faults in site selection of engineering construction is concerned by engineering geological and geotechnical engineering seismic designers.This article analyzes the Wenchuan,Yushu earthquakes and several seismic fracture site data burst characteristics,and the rich scientific model and mechanism model are constructed and the condition of active faults near the typical geological mechanics based on the consideration of the surface through Bedrock Dislocation and strong vibration effect.Some instructive conclusions are obtained:(1)Under the pulse type ground motion input,the upside has obvious effect on plate.At the same time,the plate outside a certain distance has obvious effect on the "shock" effect.(2)With velocity pulse wave,in the 0.2 g and 0.4 g ground motion input,Amax shall increase significantly within plate on 20 m,10 m footwall increased ranges.(3)More apparent velocity pulse wave,in the 0.2 g ground motion input,Amax increase significantly in plate 40 m range.At 0.4 g ground motion input,Amax only within the scope of the plate on the 30 m significantly increased,while the footwall within 10 m to 20 m.(4)Tto determine the fault setbacks of the reasonable numerical parameter analysis of the application of ground motion,this paper gives some explanation and verify its rationality.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-07-06
基金项目:廊坊市科技支撑计划项目——强震断裂带场地动力响应及活动断层避让分析(2016013107)和河北省自然科学基金——强震断裂带附近条形基础动力响应及避让距离研究(E2017512013)联合资助.

更新日期/Last Update: 2019-12-15