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Numerical analysis of the dynamic system response of the vehicles running under
the elevated aqueduct
1
1
ZHONG Li ,LENG Yanjie ,MA Huaifa 2,3
(1. Beijing IWHR Corporation,China Institute of Water Resources and Hydropower Research,Beijing 100048,China
2. China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,
China Institute of Water Resources and Hydropower Research,Beijing 100038,China
3. Earthquake Engineering Research Centre,China Institute of Water Resources and Hydropower Research,Beijing 100048,China)
Abstract: We take an elevated aqueduct and heavy vehicles that are travelling at high speed on the high⁃
way under the aqueduct as a dynamical system, and a dynamic finite element model of the vehicle-road⁃
bed-aqueduct structure system is established. The model takes into account the dynamic effects of heavy ve⁃
hicles traveling at high speeds on the aqueduct. Visco-spring boundaries are used to model artificial bound⁃
aries of the finite area of the roadbed, and the “moving determinative load method” is used to simulate
the effects of the vehicles on the road. The calculation results are basically consistent with the measured da⁃
ta on site, which verifies the correctness and effectiveness of the proposed calculation model and method.
The vehicle driving process under normal and possible extreme conditions on the road is further simulated.
The numerical analysis shows that the safety and stability of the aqueduct structure will not be affected by
the high-speed driving heavy vehicles on the highway under the aqueduct.
Keywords: elevated aqueduct;vehicle load;dynamic response;finite element
(责任编辑:王学凤)
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