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对不同参数条件下自由的远置边界、固定的远置边界、简单的远置边界、粘性局部人工边界和粘弹性局部人工边界等动力边界模型对土与结构非线性相互作用数值计算的影响进行了分析,根据实例计算分析了各种动力边界模型的有效性、数值计算量及计算结果的可靠性。分析结果表明:不同的远置边界模型,对地基计算的合理取值范围有重要的影响,而只要地基的计算范围取得合理,都获得可靠的数值计算结果;粘性与粘弹性局部人工边界对数值计算结果虽有一定的影响,但具有足够的可靠性,而且可把地基计算范围取得较小,大大地减小数值计算量,在满足工程设计计算精度要求的基础上有效地节约计算成本。
The effects of the free remote boundary, fixed remote boundary, simple remote boundary, viscous local artificial boundary and viscoelastic local artificial boundary dynamic boundary model under different parameters on the numerical calculation of soil-structure nonlinear interaction Based on the analysis, the validity of the dynamic boundary model, the numerical calculation and the reliability of the calculation results are calculated and analyzed according to the examples. The analysis results show that different remote boundary models have a significant impact on the reasonable range of the foundation calculation, and as long as the calculation range of the foundation is reasonable, reliable numerical results are obtained. The viscous and viscoelastic local artificial boundary logarithms Although the calculation result has a certain influence, it has enough reliability, and can make the calculation range of the foundation smaller, greatly reducing the numerical calculation, and effectively saving the calculation cost on the basis of meeting the calculation requirements of engineering design.