地震动参数与地震灾害相关性分析——以汶川震区地震滑坡灾害为例

王秀英; 王成亮; 张聪聪

doi:10.11939/jass.2015.02.003

地震动参数与地震灾害相关性分析——以汶川震区地震滑坡灾害为例

doi: 10.11939/jass.2015.02.003

1.
中国北京 100085 中国地震局地壳应力研究所地壳动力学重点实验室
2.
中国河北邯郸 056008 邯郸市地震局

基金项目: 中央级公益性科研院所基本科研业务专项(ZDJ2013-08)资助.

详细信息

通讯作者:
王秀英, E-mail: xiuyw@sohu.com

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- 被引次数: 0
出版历程
- 收稿日期: 2014-05-21
- 修回日期: 2015-01-03
- 刊出日期: 2015-03-01

Analysis of correlation between ground motion parameters and earthquake disasters: A case study on earthquake- induced landslide hazard in Wenchuan earthquake area

1.
Key Laboratory of Crustal Dynamics, Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China
2.
Earthquake Administration of Handan, Hebei Handan 056008, China

摘要

摘要: 本文以汶川地震滑坡震害为例，设计一种方法，对几个反映不同地震动特性的地震动参数与地震滑坡灾害的相关性进行了分析比较.结果表明： Arias强度参数与地表破坏的相关性最好，该参数比较适合小区域范围的震害预测评估；峰值加速度与地表破坏的相关性较好，但更适合作为较大区域的震害评估参数；与持时和频率有关的参数对于具体场地的震害机理分析具有辅助作用；垂向地震动对滑坡震害的作用不容忽视. 本文结论对于其它震害相关研究中评估因子的选取具有参考意义.
- 地震动参数 /
- 地震灾害 /
- 地震滑坡 /
- 相关性 /
- 评估因子
Abstract: A method was designed by taking the case of landslide hazards induced by the Wenchuan earthquake to study the correlation between parameters reflecting different ground motion characteristics and earthquake-induced landslide hazards. The results indicate that Arias intensity is the best parameter for disaster evaluation, which is more suitable for small region estimation. And the peak ground acceleration also behaves well in correlation analysis, but it is more suitable for evaluation of large area. The parameters, related with duration and frequency, can provide accessory information in analysis on mechanism of earthquake damage in concrete site. The vertical component plays an important role in evaluating earthquake-induced landslide hazards. The results have certain reference significance for selecting evaluation factors in studies related with earthquake-induced secondary hazards.
- ground motion parameter /
- earthquake disaster /
- earthquake-induced landslide /
- correlation /
- evaluation factor

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图 1 滑坡点与强震台站分布图

Figure 1. Distribution of landslides induced by Wenchuan earthquake and strong motion stations

下载: 全尺寸图片幻灯片

表 1 不同地震动参数与地震滑坡灾害相关性结果

Table 1. Correlation coefficients between different ground motion parameters and earthquake-induced landslide hazards

地震动参数	三分向	r₁₀	r₂₀	r₃₀	r₄₀	r₅₀
峰值加速度	EW	0.4125	0.4959	0.5309	0.5774	0.5998
	NS	0.5056	0.5979	0.6135	0.6555	0.6644
	UD	0.5241	0.5138	0.4825	0.5109	0.5373
峰值速度	EW	0.3966	0.3927	0.4572	0.5148	0.5198
	NS	0.3909	0.5251	0.5731	0.5876	0.6156
	UD	0.3272	0.4705	0.5371	0.5557	0.5736
峰值位移	EW	0.1708	0.2480	0.3723	0.4520	0.4592
	NS	0.3602	0.4959	0.5692	0.5765	0.5131
	UD	0.2126	0.3493	0.3649	0.3515	0.3811
Arias强度	EW	0.5090	0.5315	0.5348	0.5551	0.5613
	NS	0.5805	0.5812	0.5631	0.5856	0.6041
	UD	0.5671	0.4932	0.4268	0.4616	0.4924
5%-95%	EW	-0.1924	-0.3420	-0.3273	-0.3298	-0.3226
能量持时	NS	-0.1902	-0.3519	-0.3362	-0.3205	-0.3088
	UD	-0.3798	-0.5019	-0.4659	-0.4536	-0.4524
0.1g括号持时	EW	-0.0015	-0.0414	0.0094	0.1095	0.1462
	NS	-0.0053	-0.0417	0.0072	0.1074	0.1479
	UD	-0.0165	-0.0540	-0.0014	0.1012	0.1379
0.1g括号持时	EW	0.3963	0.2415	0.2009	0.2889	0.2559
内过零点频次	NS	0.4136	0.2908	0.2445	0.3135	0.2686
	UD	0.4071	0.3768	0.3283	0.4167	0.4394
注：相关性计算采用Matlab软件．r₁₀,r₂₀,r₃₀,r₄₀,r₅₀分别表示10，20，30，40，50 km范围内地震动参数与地震滑坡灾害的相关系数．

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参考文献(15)

王秀英. 2009. 地震滑坡灾害快速评估技术及对应急影响研究[D]. 北京: 中国地震局地质研究所: 1-3.

Wang X Y. 2009. A Study on Fast Evaluation of Earthquake-Induced Landslides and Their Effect on Earthquake Emergency Rescue[D]. Beijing: Institute of Geology,China Earthquake Administration: 1-3 (in Chinese).