Estimate of the effect of 3D shallow subsurface structures on the dynamic soil-structure-interaction

3D 浅层地下结构对动态土壤-结构相互作用的影响的估计

• 批准号: 11305033
• 负责人: WATANABE Hiroyuki
• 金额: $ 21.74万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11305033/
• 关键词: subsurface structures; soil-structure-interaction; seismic response; ground motion; earthquake fault; granular material; 1948年福井地震; 浅層地下構造; 不均質地盤; 元荒川構造帯; 活断層

The effect of 3D subsurface geological structures on the dynamic soil-structure-interaction has been investigated.The findings are as follows.1. By using the newly developed FE-FD Hybrid analysis to simulate response of dam- reservoir- foundation rock system, the radiation damping of the system was evaluated Quantitatively.2. By using the test data and numerical non-linear dynamic analysis, the effects of the separation between pile foundation and surrounding soil on the dynamic stiffness were evaluated3. By using the modified DEM, the micro-deformation mechanism of shear banding process of granular materials, such as sand or gravel, was evaluated.4. The relationship between,tne surface geographical features deformation and uplift of the south Fossa Magna was evaluated.5. By using AR model and NIOM, the feature of wave propagation in the surface ground, such as wave-path and reflection, were investigated from the records of vertical array.6. By using the ground motion database, spatial distribution of ground motions, such as peak ground acceleration, was investigated. And the effect of spatial distribution of the ground motion to the earthquake resistance of the linear lifeline system was evaluated.7. By using DEM, both the location and direction of the deformation in the subsurface ground due to reverse faulting in the base rock layer was evaluated.8. By using dynamic model, the development of slip line in the surface ground layer due to faultingwas investigated. And the formation of strong ground motion by the dynamic rupture process of the fault and subsurface structures was simulated.

研究了三维地下地质结构对动态土壤-结构相互作用的影响。研究结果如下： 1．利用新开发的FE-FD混合分析法模拟大坝-水库-基岩系统的响应，定量评价系统的辐射阻尼。 2．利用试验数据和数值非线性动力分析，评价了桩基与周围土体分离对动刚度的影响。利用改进的DEM，对砂石等粒状材料剪切带过程的微变形机理进行了评价。 4．评价了南大窝地表地貌变形与隆升的关系。 5．利用AR模型和NIOM，从垂直阵列记录中研究了波在地表传播的波程、反射等特征。 6．通过使用地面运动数据库，研究地面运动的空间分布，例如地面加速度峰值。并评价了地震动空间分布对线性生命线系统抗震性能的影响。 7．利用DEM，评价了基岩层逆断层引起的地下地面变形的位置和方向。8．利用动力学模型，研究了断层引起的地表滑移线的发育情况。并模拟了断层和地下构造的动态破裂过程形成的强烈地震动。

项目成果

BAL Krishna M., WATANABE H.: "Nonlinear dynamic behavior of pile foundation-effect of separation at soil-pile interface-"Proc. of 12th World Conference on Earthquake Engineering. No.494 (2000)

BAL Krishna M.，WATANABE H.：“桩基的非线性动力行为-土-桩界面分离效应-”Proc。

DARBAR R..S.: "Effects of perimetrical and vertical joint opening on the seismic response of a concrete arch dam"Proceedings of Earthquake Resistant Engineering Structures. 143-152 (1999)

DARBAR R..S.：“周边和垂直接缝开口对混凝土拱坝地震响应的影响”抗震工程结构论文集。

GHAYAMGHAMIAN, M.R., KAWAKAMI, H.: "On-site nonlinear hysteresis curves and dynamic soil properties"Journal of Geotechnical and Geoenvironmental Enineering, ASCE. Vol. 126, No. 6. 543-555 (2000)

GHAYAMGHAMIAN, M.R., KAWAKAMI, H.：“现场非线性磁滞曲线和动态土壤特性”岩土与地球环境工程杂志，ASCE。

谷山尚: "断層上の動力学的破壊モデルパラメタの推定法に関する研究"応用力学論文集. 3. 541-546 (2000)

Takashi Taniyama：“断层动态破裂模型参数估计方法的研究”应用力学杂志3. 541-546 (2000)。

渡辺 啓行: "ペリメータ沿いのジョイントと鉛直ジョイントの開口がコンクリートアーチダムの地震応答に与える影響"ダム工学. 9・2. 79-94 (1999)

Hiroyuki Watanabe：“沿周边和垂直接缝的开口对混凝土拱坝地震响应的影响”《大坝工程》9・2（1999）。