An investigation on interaction between liquefied soil and pile foundation during earthquake

地震作用下液化土与桩基相互作用研究

• 批准号: 08650570
• 负责人: TAKEMURA Jiro
• 金额: $ 1.47万
• 依托单位: Tokyo Institute of Technoloty
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650570/
• 关键词: liquefaction; model test; sand; pile foundation; earthquake; 裏込め; 杭基礎; 動的

There had been very few records on damages of steel pile type piers. in previous earthquakes. However, several piers located in front of gravity caissons were damaged during the 1995 Hyogoken-Nambu Earthquake. Damage of piles at the site suggested that the lateral flow of the ground might accelerate the failure of the pier. In this study, centrifuge tests were firstly carried out to simulate dynamic behavior and failure of a steel pile type pier damaged in 1995 Hyogoken-Nambu Earthquake. And also some tests with different ground conditions were conducted to discuss the effects of liquefaction of the sand layer under the rubble mound on the lateral flow of the ground and the effect of the approaching plate connecting gravity caisson to ther pier on the dynamic interaction between the two structures.

关于钢桩式桥墩的损伤情况，以往的文献报道很少。在以前的地震中。然而，位于重力沉箱前的几个桥墩在1995年兵库县南部地震中受损。现场的桩柱损坏表明地面的侧向流动可能加速码头的破坏。本研究首先利用离心试验，模拟在1995年兵库县南部地震中受损的钢桩式桥墩的动力行为与破坏。并通过不同地基条件下的试验，探讨了抛石基床下砂层液化对地基侧向流场的影响以及重力式沉箱与桥墩之间的连接板对两种结构动力相互作用的影响。

项目成果

高橋章浩: "裏込め盛土を有する砂地盤上の杭基礎構造物の地震時挙動" 第31回地盤工学研究発表会講演集. 1165-1166 (1996)

Akihiro Takahashi：“回填路堤沙地桩基础结构的地震性能”第31届岩土工程研究会议论文集1165-1166（1996）。

川口 喜孝: "地震時液状化による側方流動を受ける杭式桟橋の安定性に関する研究" 第32回地盤工学研究発表会講演集. 1. 935-936 (1997)

川口义隆：“地震液化引起侧流作用的桩墩稳定性研究”第32届岩土工程研究会议论文集1. 935-936（1997）。

A.Takahashi, J.Takemura, Y.Kawaguchi, O.Kusakabe & T.Kimura: "Dynamic behavior of piled pier located in front of gravity type caisson wall during earthquake" 10th Asian regional conference on soil mechanics and geotechnical engineering. (1999)

A.Takahashi、J.Takemura、Y.Kawaguchi、O.Kusakabe

高橋 章浩: "裏込め盛土土圧と杭間隔が砂地盤上の杭基礎構築物の地震時挙動に与える影響" 第24回地震工学研究発表会講演論文集. 1. 649-652 (1997)

高桥昭宏：“回填路堤土压力和桩间距对沙地基桩基结构抗震性能的影响”第24届地震工程研究会议论文集1. 649-652（1997）。

A.Takahash,J.Takemura et al.: "Stubility of piled pier subjected to latenl flow of soils during earthgnake" Centrifuge 98. 1. 365-370 (1998)

A.Takahash、J.Takemura 等人：“地震期间土壤潜流作用下桩墩的稳定性” Centrifuge 98. 1. 365-370 (1998)