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_5_12_汶川地震对紫坪铺混凝土面板坝的影响及原因分析
5.12
5.12100 cm 60 cm
5.12
TV641.4 P631.4 A 2008
1962
E-mail: sschen@nhri.cn
Analysis of effects of “5.12” Wenchuan Earthquake on Zipingpu Concrete
Face Rock-fill Dam
CHEN Sheng-shuiHUO Jia-pingZHANG Wei-min
(Nanjing Hydraulic Research lnstitute, Nanjing 210029, China)
Abstract: Zipingpu Concrete Face Rock-fill Dam was considerably damaged by “5.12” Wenchuan Earthquake. The site
investigation showed that the maximum permanent settlement was about 100 cm and the horizontal displacement was about 60
cm as a result of the earthquake. The separation between the concrete face and the cushion layer plane was large in area, the
dislocation of the construction joints of the concrete face above the reservoir water level was obvious, and the crushed damage
of the vertical joints of the concrete face also occurred because of the permanent displacement due to the earthquake. Based on
the field investigation, the damage mechanism was analyzed, and proposals were put forward on the future analytical
computation of the earthquake effects on concrete face rock-fill dams, anti-earthquake design and the principle for the
rehabilitation of the Zipingpu Concrete Face Rock-fill Dam damaged by the earthquake.
Key words: “5.12” Wenchuan Earthquake; Zipingpu Concrete Face Rock-fill Dam; earthquake damage; damage mechanism
analysis
60
km
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