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![Page 1: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/1.jpg)
A Quick Review on Wenchuan A Quick Review on Wenchuan EarthquakeEarthquake
Zifa Wang, Baitao Sun
Junwu Dai and Shanyou LiInstitute of Engineering Mechanics,
China Earthquake Administration
Chengdu, China, August 04, 2008
![Page 2: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/2.jpg)
1. Strong Ground Motion2. Earthquake Damage3. Loss Amount
Contents
![Page 3: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/3.jpg)
![Page 4: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/4.jpg)
1. Strong Ground Motion
Time: 14: 28: 01, May 12, 2008Location:Wenchuan, Sichuan ProvincneMagnitude: 8.0 (Ms)Depth: 14km (depth)Death: 89, 000+ Injury: 370, 000+ Loss: 700 billion RMB
![Page 5: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/5.jpg)
汶川卧龙台(震中距 18KM ):幅值大
![Page 6: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/6.jpg)
四川绵竹清平(震中距 87.5 公里,断层距 0.69 公里 )
![Page 7: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/7.jpg)
四川什邡市八角镇
![Page 8: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/8.jpg)
四川什邡市八角镇纪录的傅氏谱和功率谱
![Page 9: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/9.jpg)
山东莘县台校正前加速度记录波形图 ( 持时长 )
![Page 10: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/10.jpg)
四川九寨章扎台(震中距 259km)
![Page 11: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/11.jpg)
PGA (NS) Distribution
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乡城稻城
冕宁越西
九龙
天全 名山洪雅
汉源石棉
荥经泸定
康定
乐山
邛崃
盐亭
阆中苍溪
旺苍
宁强
勉县
凤县
剑阁
广元青川
甘谷武山
礼县
陇县清水
略阳
两当
康县
徽县成县
西和
华亭
平凉镇原 西峰
彭阳西吉
环县
固原
海原西宁
舟曲
文县
武都
兰州
西安
平武
北川 江油梓潼
彭州
彭山眉山 资阳
安县绵阳
广汉什邡
绵竹
新都郫县
重庆
成都
理塘
甘孜
炉霍
黑水
小金
金川
南坪
松潘
茂县
理县 汶川
雅安
长沙
峨眉山
都江堰
马尔康
峨边彝族自治县
110° E
110° E
105° E
105° E
100° E
100° E
35° N 35° N
30° N 30° N
PGA( )汶川地震主震 南北向 等值线图
0 10050 千米
➣
国家强震动台网中心
PGA(gal)
等值线
!● 震中
● 主要城市
▲ 强震动观测台站
20
300
340420
60
100
编图说明:由于强震动台站破坏及交通、通讯等原因,震中区部分台站记录数据无法及时汇集至国家强震动台网中心。
17 379 PGA本图以主震触发的 个省市 个强震动台站记录数据为基础,按南北向绘制汶川地震主震峰值加速度( )等值线图。
460
140
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60
100
140
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220260300
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380
380
500
![Page 12: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/12.jpg)
PGA (EW) Distribution
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乡城稻城
冕宁越西
九龙
天全 名山洪雅
汉源石棉
荥经泸定
康定
乐山
邛崃
盐亭
阆中苍溪
旺苍
宁强
勉县
凤县
剑阁
广元青川
甘谷武山
礼县
陇县清水
略阳
两当
康县
徽县成县
西和
华亭
平凉镇原 西峰
彭阳西吉
环县
固原
海原西宁
舟曲
文县
武都
兰州
西安
平武
北川 江油梓潼
彭州
彭山眉山 资阳
安县绵阳
广汉什邡
绵竹
新都郫县
重庆
成都
理塘
甘孜
炉霍
黑水
小金
金川
南坪
松潘
茂县
理县 汶川
雅安
长沙
峨眉山
都江堰
马尔康
峨边彝族自治县
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110° E
105° E
105° E
100° E
100° E
35° N 35° N
30° N 30° N
PGA( )汶川地震主震 东西向 等值线图
0 10050 千米
➣
国家强震动台网中心
PGA(gal)
等值线
!● 震中
● 主要城市
▲ 强震动观测台站
20
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编图说明:由于强震动台站破坏及交通、通讯等原因,震中区部分台站记录数据无法及时汇集至国家强震动台网中心。
17 378 PGA本图以主震触发的 个省市 个强震动台站记录数据为基础,按南北向绘制汶川地震主震峰值加速度( )等值线图。
140
20N
60
100
140
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220260
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300340
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![Page 13: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/13.jpg)
PGA (Vertical) Distribution
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巴塘
乡城稻城
冕宁越西
九龙
天全 名山洪雅
汉源石棉
荥经泸定
康定
乐山
邛崃
盐亭
阆中苍溪
旺苍
宁强
勉县
凤县
剑阁
广元青川
甘谷武山
礼县
陇县清水
略阳
两当
康县
徽县成县
西和
华亭
平凉镇原 西峰
彭阳西吉 固原
舟曲
文县
武都
兰州
西安
平武
北川 江油梓潼
彭州
彭山眉山
资阳
安县绵阳
广汉什邡
绵竹
新都郫县
重庆
成都
理塘
甘孜
炉霍
黑水
小金
金川
南坪
松潘
茂县
理县 汶川
雅安
峨眉山
都江堰
马尔康
峨边彝族自治县
110° E
110° E
105° E
105° E
100° E
100° E
35° N 35° N
30° N 30° N
PGA( )汶川地震主震 竖向 等值线图
0 10050 千米
➣
国家强震动台网中心
PGA(gal)
等值线
!● 震中
▲ 强震动观测台站
● 主要城市10
20
60
70
130
编图说明:由于强震动台站破坏及交通、通讯等原因,震中区部分台站记录数据无法及时汇集至国家强震动台网中心。
17 377 PGA本图以主震触发的 个省市 个强震动台站记录数据为基础,按竖向绘制汶川地震主震峰值加速度( )等值线图。
40
7010
100
10
10
1010
70
100
140
N
60
100
140
180220260300
340380
![Page 14: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/14.jpg)
Ground motion Summary
Large permanent displacementElliptical attenuationLong duration
![Page 15: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/15.jpg)
2. Earthquake Damage
![Page 16: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/16.jpg)
IEM’s Efforts
•1st expert team dispatched within 2 hours•7 expert teams dispatched, 75 staff•Currently, 20+ staff on the field•Fields of work
•Search and rescue•Field survey•Loss estimation•Engineering safety evaluation
![Page 17: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/17.jpg)
汶川地震四川省内调查点分布图
![Page 18: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/18.jpg)
![Page 19: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/19.jpg)
• Land Slide
![Page 20: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/20.jpg)
![Page 21: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/21.jpg)
![Page 22: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/22.jpg)
![Page 23: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/23.jpg)
![Page 24: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/24.jpg)
![Page 25: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/25.jpg)
![Page 26: A Quick Review on Wenchuan Earthquake Zifa Wang, Baitao Sun Junwu Dai and Shanyou Li Institute of Engineering Mechanics, China Earthquake Administration.](https://reader030.fdocuments.in/reader030/viewer/2022032723/56649cfe5503460f949cf030/html5/thumbnails/26.jpg)
• Road and Bridge
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Damage of a high-pass bridge in Mianzhu City
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• Power supply and Telecommunication
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• Water supply
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Complete Collapse of Hongbai Town in Shifang City
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Complete loss of a mountain village in Xiaoba of Anxian
County
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Soft 1st story with rotation of 3.4m for the building
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Landslides near Beichuan County
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Damage from rolling stones at the new site for Beichuan
Middle School
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Rolling stones in Gaochuan, Anxian County
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Damage of a rail track between Hongbai and Yinghua in Shifang City
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3 steps due to uneven settlement?
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Damaged bridge near Beichuan County
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Side view of the damaged bridge near Beichuan County
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The damaged bridge near Hongbai of Shifang City
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Liquefaction in Pixian
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Damage to 4 motors of a crane on top of Zipingpu Dam
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Damage near expansion joints of Zipingpu Dam
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A building with minor damage in Hongbai, Shifang City
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Minor damage to an office building for
Beichuan Tea Manufacturer
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Summary on Damage
Weakest link: Buildings in the countryside, schools and without proper seismic designEffect of seismic designProfound effect of lifeline systemsWide spread geotechnical damage
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3. Loss Amount
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USGS ShapeMap:
Instrumental Intensity
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Casualty estimate (May 13):18,000~33,000
Actual : 68,000+ (May 31, 2008)
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调查点分布图
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烈度分布图(第一稿)
异常区比较多
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人员死亡分布图
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Relief and Reconstruction fund•Central Government: 70B
•Local Government: 21-35B( 30%~50% )•Donations: 40+B (May 31, 2008 )•Insurance: ??
Total: 130+ B
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•We know little about earthquakes•Occurrence, ground motion, and damage
•Weakest link• rural areas, schools and old buildings
•Huge impact of lifeline systems•Heavy damage due to geotechnical failure•National efforts on search and rescue•Risk diversification (catastrophe insurance)•Simple and effective measures for rural areas
Observations
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Published report on the earthquake