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| Research on parallel computing of damage prediction of high arch dams subjected to earthquakes |
| Received:August 27, 2008 |
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| DOI：10.7511/jslx20102008 |
| KeyWord:arch dam earthquake damage parallel computing shaking table test |
| Author | Institution |
| 钟红 |
大连理工大学 建设工程学部,大连 ;大连理工大学 海岸与近海工程国家重点实验室,大连 |
| 林皋 |
大连理工大学 建设工程学部,大连 ;大连理工大学 海岸与近海工程国家重点实验室,大连 |
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| Abstract: |
| The prediction of damage process of high arch dams is significant to the effectiveness of aseismic evaluation. However, such numerical simulation requires rigorous computational capacity. Conventional serial computing falls short of that and parallel computing is the ultimate solution to this problem. The parallel finite element code PDPAD was developed for the damage prediction of arch dams utilizing the damage model with inheterogeneity of concrete considered. Developed with language Fortran, the code uses a master/slave mode for programming, domain decomposition method for allocation of tasks, MPI (Message Passing Interface) for communication and solvers from AZTEC library for solution of large-scale equations. Efficiency test showed that the performance of PDPAD was quite satisfactory. The code was employed to study a being-built arch dam on a 4-node PC Cluster, with more than one million degrees of freedom considered. The obtained damage mode was quite similar to that of shaking table test, indicating that the proposed procedure and parallel code PDPAD has a good potential to simulate seismic damage mode of arch dams. And as stated, parallel computing can be the ultimate method for numerical simulation of such large-scale engineering problems. |
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