基于静力有限元的地下结构拟静力抗震计算方法研究
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摘要
采用子结构法对地下结构静力有限元法进行了理论推导,在此基础上提出了地下结构静力有限元法计算模型。为验证该模型的适用性,通过改变该计算模型宽度和高度两方面进行计算,并将计算结果与动力时程方法进行对比。结果表明,该静力有限元计算模型物理概念清晰、意义明确,受模型尺寸的影响较小且具有良好的计算精度。
The substructure method was adopted for the underground structure static finite element method(SFEM)to carry on the theoretical derivation.Based on this theoretical derivation,the underground structure SFEM calculation model was proposed.The performance of the SFEM calculation model was evaluated by changing both the width and height of the model,and the calculated results were compared with the dynamic time-history method.The results show that the SFEM model has some advantages such as clear concept,definite physical meaning,less affected by the model size and good caculation precision.
引文
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