Development of a high damping and high resistance design of compound foundation accompanied by soil improvement

土壤改良复合地基高阻尼高阻设计开发

• 批准号: 17360214
• 负责人: TAKEMIYA Hirokazu
• 金额: $ 10.18万
• 依托单位: OKYAMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360214/
• 关键词: High damping foundation; High resistance foundation; Honeycomb-cell WIB; Tire shreds fill-in; Vibration mitigation; Wave impediment; Field test; Computer simulation; 性能耐震設計; 複合基礎; 非線形地震応答解析; 地盤-基礎の動的相互作用; プレキャスト版WIB; 廃タイヤシュレッド; 高減衰材

In this study, proposed is a foundation strengthening design, accompanied by the nearby soil improvement against earthquake damages. This innovative design method of pile foundations increases the horizontal resistance by the stiffened front soil and the high damped mechanism by its compound configuration. The details are the procedure that encompasses the foundation pile by honeycomb shaped soil improvement with scrapped tire shreds fill-in. Additional high damping effect is expected by using high viscous asphalt mixture with tire shreds.The computer simulation was carried out from linear analysis for traffic-induced vibration to nonlinear analyses in severe earthquake motions. In the latter situation, the proposed design lead to a partial damage allowed concept to escape from the total damage by energy absorption.The vibration mitigation effect by honeycomb shaped WIB was investigated by field test. The WIB cell wall is made of a pre-cast concrete. The tire shreds were filled inside cells. The source loadings are a shaker driving, a guided hamper hitting, etc. The field test proved that the honeycomb shaped WIB is very effective for vibration mitigation, more than several dB reduction, compared to conventional vibration mitigation procedures.

本研究提出了地基加固设计，并对附近的土壤进行改良以防止地震破坏。这种创新的桩基设计方法，通过加强前土增加水平阻力，通过复合结构增加高阻尼机制。详细介绍了蜂窝状土改良废轮胎碎料充填地基桩的施工工艺。采用高粘性沥青混合料和轮胎碎片作为阻尼材料，可以获得更高的阻尼效果。从交通振动的线性分析到强震作用下的非线性分析，进行了计算机模拟。在后一种情况下，所提出的设计导致了允许部分损伤的概念，通过能量吸收摆脱了总损伤。通过现场试验研究了蜂窝状WIB的减振效果。WIB单元壁由预制混凝土制成。轮胎碎片填充在细胞内。的源负载是一个振动筛驱动，一个指导阻碍打击等领域的测试证明，蜂窝状的WIB是非常有效的振动缓解，比传统的振动缓解程序，减少几个分贝以上。

项目成果

Development of a precast- concrete-tire shred combed WIB for vibration mitigation

开发用于减轻振动的预制混凝土轮胎碎片梳理 WIB

• 发表时间: 2006
• 期刊: Proc. the 41st Annual Conference, Japanese Geotechnical Society
• 作者: Takemiya;H. et al.
• 通讯作者: H. et al.

Buried wave impeding barrier (WIB) against transmission of traffic induced vibrations

埋地波阻屏障 (WIB) 防止交通引起的振动传播

• 发表时间: 2006
• 期刊: Proc. the 41st Annual Conference, Japanese Geotechnical Society
• 作者: Takemiya;H.;Shimabuku;J.
• 通讯作者: J.

軟弱地盤上の新幹線高架軌道から発生・伝播する地盤震動への波動論的考察

软土地基上新干线高架轨道产生和传播的地面振动的波动理论考虑

• 发表时间: 2006
• 期刊: 土木学会年次学術講演回講演概要 第61回
• 作者: 竹宮宏和;島袋ホルヘ
• 通讯作者: 島袋ホルヘ

Soil Dynamics and Earthquake Engineering

• DOI: 10.1016/0141-1195(86)90051-3
• 发表时间: 2008
• 作者: H. Cao;M. Friswell

コンサートイベント時のドーム周辺の地盤震動予測とその対策法の提案

演唱会期间穹顶周围地面振动预测及对策建议

• 发表时间: 2006
• 期刊: 土木学会年次学術講演回講演概要 第61回
• 作者: 北冨真吾;竹宮宏和
• 通讯作者: 竹宮宏和