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工程力学  2015 

无限地基相互作用力时域求解的阻尼溶剂逐步抽取法

DOI: 10.6052/j.issn.1000-4750.2014.02.0107, PP. 20-26

Keywords: 无限地基,相互作用力,时域数值算法,阻尼溶剂逐步抽取法,基础工程

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Abstract:

无限地基相互作用力时域求解的精度及效率是面向实际工程结构动力分析的关键问题。基于阻尼抽取法模拟地基无限域动力特性的思想,从数值实现中的误差源出发,提出了一种施加较大附加人工阻尼再分步依次移频抽取的阻尼溶剂逐步抽取法,并给出了具体实现公式。该方法可以最大限度地消除反射波波动能量及抽取人工高阻尼的影响,提高了算法的精度,降低了人工高阻尼与地基区域大小的相互制约性,并能适应地基有限区域表面几何结构复杂多变的情况,具有较高的工程实用价值。最后,通过对典型三维半无限空间问题的动力反应分析,将计算结果与精确解,阻尼抽取法模型和粘弹性人工边界模型进行对比研究,证明了该方法具有良好的精度和计算效率,并对不规则地基有限域模型进行分析,验证其良好的工程适用性。

References

[1]  尹训强, 李建波, 林皋. DSEM时域数值模型求解关键影响因素分析[J]. 大连理工大学学报, 2012, 52(2): 246―252. Yin Xunqiang, Li Jianbo, Lin Gao. Analyses of key influencing factors of time-domain numerical methods based on DSEM [J]. Journal of Dalian University of Technology, 2012, 52(2): 246―252. (in Chinese)
[2]  Wolf J P. Soil-structure-interaction analysis in time domain [M]. New Jersey: Prentice-Hall Englewood Cliffs, 1988: 1―8.
[3]  Wolf J P, Masato Motosaka. Recursive evaluation of interaction forces of unbounded soil in the time domain [J]. Earthquake Engineering and Structure Dynamic, 1989, 18(3): 345―363.
[4]  林皋, 栾茂田, 陈怀海. 土-结构相互作用对高层建筑非线性地震反应的影响[J]. 土木工程学报, 1993, 26(4): 1―13. Lin Gao, Luan Maotian, Chen Huaihai. Soil-structure interaction effect on the nonlinear seismic response of high-rise buildings [J]. China Civil Engineering Journal, 1993, 26(4): 1―13. (in Chinese)
[5]  赵密, 杜修力, 刘晶波. 一种高阶精度人工边界条件: 出平面外域波动问题[J]. 工程力学, 2012, 29(4): 7―14. Zhao Mi, Du Xiuli, Liu Jingbo. A high-order accurate artificial boundary condition: Out-of-plane exterior wave problem [J]. Engineering Mechanics, 2012, 29(4): 7―14. (in Chinese)
[6]  Liao Z P, Wong H L. A transmitting boundary for the numerical simulation of elastic wave propagation [J]. Soil Dynamics and Earthquake Engineering, 1984, 3(1): 174―183.
[7]  宋崇民, 张楚汉. 水坝抗震分析的动力边界元方法[J]. 地震工程与工程振动, 1988, 8(4): 14―25. Song Chongmin, Zhang Chuhan. A dynamic boundary element method for earthquake resistant analysis of dams [J]. Earthquake Engineering and Engineering Vibration, 1988, 8(4): 14―25. (in Chinese)
[8]  Rizos D C, Wang Z. Coupled BEM-FEM solutions for direct time domain soil-structure interaction analysis [J]. Engineering Analysis with Boundary Elements, 2002, 26(10): 877―888.
[9]  Yan J Y, Zhang C H, Jin F. A coupling procedure of FE and SBFE for soil-structure interaction in the time domain [J]. International Journal for Numerical Methods in Engineering, 2004, 59(11): 1453―1471.
[10]  Schauer M, Langer S. Large scale simulation of wave propagation in soils interacting with structures using FEM and SBFEM [J]. Journal of Computational Acoustics, 2011, 19(1): 75―93.
[11]  Song Chongming, Wolf J P. Dynamic stiffness of unbounded medium based on damping solvent extraction [J]. Earthquake Engineering and Structure Dynamic, 1994, 23(2): 169―181.
[12]  李建波, 陈健云, 林皋. 无限地基-结构动力相互作用分析的分区递归时域算法研究[J]. 工程力学, 2005, 22(3): 88―96. Li Jianbo, Chen Jianyun, Lin Gao. A refined sub-regional reciprocal method in time domain for dynamic soil- structure interaction analysis [J]. Engineering Mechanics, 2005, 22(3): 88―96. (in Chinese)
[13]  钟红, 林皋, 李建波. 空间结构-地基动力相互作用数值分析时域算法研究[J]. 大连理工大学学报, 2007, 47(1): 78―84. Zhong Hong, Lin Gao, Li Jianbo. Numerical analysis of soil-structure dynamic interaction for 3-D problems in time domain [J]. Journal of Dalian University of Technology, 2007, 47(1): 78―84. (in Chinese)
[14]  尹训强, 李建波, 林皋, 胡志强. 基于ANSYS 平台的阻尼溶剂抽取法及其工程应用[J]. 工程力学, 2013, 30(3): 98―105. Yin Xunqiang, Li Jianbo, Lin Gao, Hu Zhiqiang. Damping solvent extraction method based on ansys andits engineering application [J]. Engineering Mechanics, 2013, 30(3): 98―105. (in Chinese)
[15]  陈永辉, 王新泉, 周星德. 应用无限地基方法研究打桩振动对海堤的影响[J]. 水利学报, 2011, 42(2): 226―231. Chen Yonghui, Wang Xinquan, Zhou Xingde. Determination of impact of pile driving vibration on seawall by infinite foundation method [J]. Journal of Hydraulic Engineering, 2011, 42(2): 226―231. (in Chinese)
[16]  李建波, 陈健云, 林皋. 求解非均匀无限地基相互作用力的有限元时域阻尼抽取法[J]. 岩土工程学报, 2004, 26(2): 263―267. Li Jianbo, Chen Jianyun, Lin Gao. Finite element damping-extraction method for dynamic interaction time domain analysis of non-homogeneous unbounded rock [J]. Chinese Journal of Geotechnical Engineering, 2004, 26(2): 263―267. (in Chinese)

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