Evaluation of extent of damage in geogrid reinforced soil walls subjected to earthquakes

土工格栅加筋土墙地震破坏程度评价

• 批准号: 20360208
• 负责人: KUWANO Jiro
• 金额: $ 12.06万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20360208/
• 关键词: 地盤工学; 地盤防災; 補強土; 被災; ジオグリッド; 除荷再載荷; 残存性能; 引抜き抵抗; 地震; 引抜き特性; 除荷・再載荷; 復旧

In this study, evaluation of degree of damage in GRSW is discussed. Shear strain of backfill material in the reinforced area is evaluated from the horizontal displacement of the wall. Then, occurrence of the slip line is decided based on the simple plastic theory. Since the past studies show that seismic stability of the GRSW depends upon the pullout resistance between geogrid and backfill material after the generation of slip line in the backfill, seismic stability of the GRSW having slip line in the reinforced area is evaluated from the results of the pullout test. Finally, the validity of the proposed method was verified with results of some centrifuge shaking table tests.

在这项研究中，在GRSW的损伤程度评估进行了讨论。由墙体的水平位移估算加固区回填材料的剪应变。然后，根据简单塑性理论确定滑移线的出现。以往的研究表明，加筋土挡墙的抗震稳定性取决于回填土中滑移线产生后，土工格栅与回填材料之间的抗拔力，因此，对加筋区存在滑移线的加筋土挡墙的抗震稳定性进行了拉拔试验评价。最后，通过离心振动台试验验证了该方法的有效性。

项目成果

Confining Effects during Pullout Test with Unloading-Reloading Process in Toyoura Sand

丰浦砂卸载-重装过程拉拔试验的限制效应

• 发表时间: 2009
• 作者: G.Nguyen;Y.Fuse;J.Kuwano;J.Izawa;S.Seki
• 通讯作者: S.Seki

Interaction between geogrid and soil during the pullout test under unloading-reloading process

卸载-重装过程中拉拔试验中土工格栅与土壤的相互作用

• 发表时间: 2009
• 作者: Nguyen;G.H.;Kuwano J.;Izawa;J.;Seki;S.
• 通讯作者: S.

Centrifuge Tests on Seismic Stability of the Damaged Geogrid Reinforced Soil wall

损伤土工格栅加筋土墙抗震稳定性离心机试验

• 发表时间: 2010
• 期刊: Geosynthetics Engineering Journal
• 作者: Nguyen Hoang Giang;Jiro Kuwano;Jun Izawa;Sakae Seki
• 通讯作者: Sakae Seki

Development of rational seismic design method forgeogrid-reinforced soil wall combined with fibre-mixed soil-cement and its applications.

纤维混合水泥土土工格栅加筋土墙合理抗震设计方法开发及其应用

• 发表时间: 2009
• 期刊: Geosynthetics International 16(4)
• 作者: J.Izawa;H.Ito;T.Saito;M.Ueno;J.Kuwano
• 通讯作者: J.Kuwano

Shear strain distribution in soil around geogrid during the unloading-reloading pullout test

卸重加载拉拔试验过程中土工格栅周围土体剪应变分布

• 发表时间: 2009
• 期刊: Geosynthetics Engineering Journal 24
• 作者: G.Hguyen;J.Kuwano;J.Izawa;S.Seki;S.Tachibana
• 通讯作者: S.Tachibana