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.

在这项研究中，提出了一种地基加固设计，同时对附近的土壤进行改良以抵抗地震破坏。这种创新的桩基设计方法通过加劲前土和复合结构的高阻尼机构增加了水平阻力。详细内容是通过蜂窝状土壤改良和废旧轮胎碎片填充来覆盖基础桩的过程。通过使用高粘性沥青混合料和轮胎碎片，有望获得额外的高阻尼效果。计算机模拟从交通引起的振动的线性分析到强烈地震运动的非线性分析进行。在后一种情况下，所提出的设计导致部分损坏，从而使概念能够通过能量吸收摆脱总体损坏。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。轮胎碎片被填充在细胞内。源载荷为振动台驱动、引导障碍物撞击等。现场测试证明，蜂窝状WIB对于减振非常有效，与传统减振程序相比，减少了数dB以上。

项目成果

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

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.

Soil Dynamics and Earthquake Engineering

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

Prediction of train/traffic induced ground vibrations and mitigation by WIB, Environmental Vibrations, 2005.

WIB 对火车/交通引起的地面振动的预测和缓解，《环境振动》，2005 年。

• 发表时间: 2005
• 期刊: Proceedings of ISEV2005
• 作者: Takemiya;H.
• 通讯作者: H.