Pullout resistance of geo-cell placed as tensile reinforcement in backfill

回填土中作为拉筋放置的土工格室的拉拔阻力

• 批准号: 22760359
• 负责人: KIYOTA Takashi
• 金额: $ 2.08万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22760359/
• 关键词: ジオセル; ジオグリッド; 補強土; 土中引き抜き抵抗; 模型実験; 盛土材料; ジオシンセティックス; 粒径; 補強士

Reinforcement, such as strips, woven-geotextiles and geogrids, is used to tensile-reinforce the backfill of soil structures in recent civil engineering applications. The use of geo-cells as tensile reinforcement has been quite limited, but geo-cells have been often used to restrain the foundation ground from horizontal spreading when subjected to vertical load by, for example, embankment, light-weight houses and traffic. Geo-cells have such advantages as that large-particles can be contained inside the cells and respective cells have a large anchorage capacity when pull laterally. On the other hand, conventional type geo-cells are not designed to have a high global stiffness when pull laterally. To examine whether geocells can be function as tensile reinforcing when used to reinforce the backfill of, for example, retaining walls and foundations, a series of laboratory tests were performed to evaluate the pull-out resistance of small-scaled models of geo-cell having different particle size of the backfill in which the geo-cell models were arranged.

在最近的土木工程应用中，诸如条带、机织土工布和土工格栅等加筋材料被用来对土壤结构的回填进行拉伸加固。土工格室作为抗拉钢筋的使用相当有限，但土工格室经常被用来限制地基在受到例如路堤、轻型房屋和交通等垂直荷载时的水平扩展。土工格室具有格室内可容纳大颗粒、且各格在横向拉力时锚固能力大等优点。另一方面，传统类型的土工格室并未设计成在横向拉动时具有高整体刚度。为了检验土工格室在用于加固例如挡土墙和地基的回填土时是否可以起到抗拉加固的作用，进行了一系列实验室测试，以评估土工格室模型所布置的回填土颗粒尺寸不同的小型土工格室模型的拉拔阻力。

项目成果

盛土をジオセル補強した一体橋梁の地震時安定性

土工格室加筋路堤整体桥的地震稳定性

• 期刊: Geosyntethics Engineering Journal, IGS Japanese Chapter 25巻
• 作者: K.R.Sui;X.Lin;X.S.Zhu;Y.W.Shi; K.Iwai;M.Miyagi;黒田哲也,相馬亮一,Munoz Henry,太田準一郎,清田隆,原田道幸,龍岡文夫
• 通讯作者: 黒田哲也,相馬亮一,Munoz Henry,太田準一郎,清田隆,原田道幸,龍岡文夫

Influence of particle size and geometry on the pullout tests of geocell embedded in soil

颗粒尺寸和几何形状对土工格室拉拔试验的影响

• 发表时间: 2012
• 期刊: Bulletin of Earthquake Resistant Structure Research Center, University of Tokyo
• 作者: Han;X.;Kuroda;T.;Tatsuoka;F.;Kiyota;T.
• 通讯作者: T.

Development of a new bridge type, GRS integral bridge

新型桥型GRS整体桥的开发

• 发表时间: 2010
• 期刊: Proc.9^<th> International Conference on Geosynthetics
• 作者: Tatsuoka;F.;Nishikiori;H.;Soma;R.;Hirakawa;D.;Kiyota;T.;Tateyama;M.;Watanabe;K.
• 通讯作者: K.