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Dynamic Stability and Reinforcement Effect Analyses of Dagangshan High Arch Dam Abutment
The maximum height of Dagangshan arch dam is 210m. Its geological conditions are complex. The basic seismic intensity of the dam is VIII. The crest value of earthquake acceleration that 100 years beyond the probability of 2% is 0.5575g. Using the rigid body-spring element method, this paper simulated Dagangshan arch dam’s abutment dynamic stability under earthquake action. Searching the governing sliding bodies and evaluating the reinforcement effect. The results show that under the action of earthquake, the left and right bank’s key slide blocks are L1 and R2 respectively. Before reinforcement, their minimum instantaneous dynamic safety factors dropped from 5.053 and 3.076 of static values to 1.045 and 0.922 respectively. After the pre-stressed anchor cable reinforcement on the left and right abutment, the minimum instantaneous dynamic safety factors of blocks L1, R2 are raised up to 1.091 and 1.145 respectively, meeting the requirements of designing value, the reinforcement measures are very effective.
Dynamic Stability and Reinforcement Effect Analyses of Dagangshan High Arch Dam Abutment
The maximum height of Dagangshan arch dam is 210m. Its geological conditions are complex. The basic seismic intensity of the dam is VIII. The crest value of earthquake acceleration that 100 years beyond the probability of 2% is 0.5575g. Using the rigid body-spring element method, this paper simulated Dagangshan arch dam’s abutment dynamic stability under earthquake action. Searching the governing sliding bodies and evaluating the reinforcement effect. The results show that under the action of earthquake, the left and right bank’s key slide blocks are L1 and R2 respectively. Before reinforcement, their minimum instantaneous dynamic safety factors dropped from 5.053 and 3.076 of static values to 1.045 and 0.922 respectively. After the pre-stressed anchor cable reinforcement on the left and right abutment, the minimum instantaneous dynamic safety factors of blocks L1, R2 are raised up to 1.091 and 1.145 respectively, meeting the requirements of designing value, the reinforcement measures are very effective.
Dynamic Stability and Reinforcement Effect Analyses of Dagangshan High Arch Dam Abutment
Advanced Materials Research ; 594-597 ; 1922-1931
2012-11-29
10 pages
Article (Journal)
Electronic Resource
English
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