Study on dynamic behavior of pile under seismic motion

地震作用下桩的动力性能研究

• 批准号: 11650516
• 负责人: TAMANO Tomio
• 金额: $ 2.11万
• 依托单位: Osaka Sangyo University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650516/
• 关键词: Bearing capacity; Model test; Earthquake; Progressive failure; Cast-in-place pile; Enlarged bottom pile; 進行生破壊; 杭; 耐震設計; 埋立地盤; モデル実験; 数値解析; 下水道構造物; 阪神・淡路大震災

In this study, it intends to clarify that what kind of seismic motion destroys piles in the ground. In addition, both static and seismic design method are examined by using the experimental results and analytical approach through the 2year's research, 1999-2000.The research item and abstract are as follows :Bearing capacity generation of pile : A two dimensional apparatus was used with aluminum rod mass simulating the non-cohesive ground. The tests were performed with lose and dense condition of the ground. Effect of pile width and length of embedment were studied. Test results bring out a comprehensive observation of the progressive failure mechanism.Seismic damage seismic behavior of piles and retaining walls : The seismic damage of the piles and the retaining walls at Kobe earthquake is collected and is arranged of the case variously.Production of impact apparatus, gives over 1G impact vertical motion : By production of this apparatus, mortar test-pieces shock both compression and tension experiment possible. Now the basic experimental research is tackled for the elucidation of fracture mechanism by up-down impulsive force.

在这项研究中，旨在阐明什么样的地震运动会破坏地基中的桩。此外，通过1999-2000年两年的研究，利用试验结果和分析方法对静力和抗震设计方法进行了检验。研究内容和摘要如下：桩的承载能力产生：用铝棒质量模拟无粘性地基的二维仪。试验是在地面疏松致密的情况下进行的。研究了桩身宽度和埋入长度对桩身稳定性的影响。试验结果全面观察了桩和挡土墙的震害破坏机理：采集了神户地震时桩和挡土墙的震害数据，并将其布置成不同的情况；制作了冲击装置，产生了1G以上的冲击垂直运动：通过该装置的制作，砂浆试件可以同时进行压缩和拉伸试验。目前正在进行基础实验研究，以阐明上下冲力作用下的断裂机理。

项目成果

玉野富雄: "拡底杭削孔時の拡底形状と地盤挙動"日本材料学会・第4回地盤改良シンポジウム論文集. Vol.1. 55-62 (2000)

Tomio Tamano：“底部膨胀桩钻探期间的底部膨胀形状和地面行为”第四届地面改进研讨会论文集，日本材料学会卷 1. 55-62 (2000)。

古川正明 玉野富雄 他: "The Study of Retaining Structures under Seismic Motions"Proc.of Int.Symp.on Geotechnical Aspects of Underground Construction. Vol.1. 601-606 (1999)

Masaaki Furukawa、Tomio Tamano 等人：“地震运动下的挡土结构研究”Proc.of Int.Symp.on Geotechnical Aspects of Underground Construction Vol.1 (1999)。

玉野富雄: "Progressive Failure Mechanism of Axial Loaded Non-displacement Pile"Proc.Int.Symp.on Recent Development of Ground Improvement. Vol.1(in printing). (2001)

Tomio Tamano：“轴向加载非位移桩的渐进破坏机制”Proc.Int.Symp.on 地面改良的最新发展第 1 卷（印刷中）。

Tomio TAMANO: "Earth Retaining Wall under Seismic Motion of Kobe earthquake"Proceedings International Symposium Geotechnical Aspects underground Construction in Soft Clay. Vol.1. 631-634 (1999)

Tomio TAMANO：“神户地震地震作用下的挡土墙”国际软土岩土工程方面研讨会论文集。

Tomio TAMANO: "Mechanical Behavior of Borehole Excavation for Enlarged- bottom Cast-in-place Pile"The fourth Japan National Symposium on Ground Improvement, JSMS. 47-54 (2000)

Tomio TAMANO：“扩底灌注桩钻孔开挖的力学行为”第四届日本全国地基改良研讨会，JSMS。