Mitigation of seismic damage of transportation facility to fault induced distlacemelts

减轻断层位移引起的交通设施地震损坏

• 批准号: 12555134
• 负责人: KAWASHIMA Kazuhiko
• 金额: $ 8.06万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555134/
• 关键词: Earthquake Engineering; Seismic Design; Fault Displacement; Fault Model; Near-Field Ground Motions; Fault Dislocation; Bridge; Foundations

Since there are a number of faults which could result in a rupture of surface ground, it is very difficult for transportation facilities such as highways and railways not to cross faults at all. This may results in a critical failure of the transportation facilities by the fault activity in the near future. However, due to the difficulty of the problem involved in this countermeasure, few research have been conducted to develop a rational technology for mitigating the damage of transportation facilities to fault displacement. This research was conducted between 1990 and 1992 to develop an appropriate countermeasure of transportation facilities to fault displacements. The following conclusions were deduced from the study.1) Based on an analysis of fault lengths of the past seven earthquakes (Nobi, Kita-Tango, Kita-Izu, Hyougoken nanbu, Izmit and Duzce (Turkey), and Chi Chi (Taiwan)), it was found that a fault is shorter than 3 m in length for the earthquakes with a moment magnitude Mw l … More ess than 7, and that about 70% of the earthquakes with Mw larger than 7.5 have a fault shorter than 3m in length.2) Based on a strong motion record measured at Kasho Dam during the 2000 Totori-ken Seibu earthquake, it was revealed that the dam body settled about several tens centimeters, and the level of reservoir dropped sharply. It was revealed from the numerical analysis for the settlements than the settlements were resulted from a rupture of a hidden fault under this dam.3) Damage of piles in the Bolu Viaduct, which suffered damage by a fault displacement during the 1999 Duzce, Turley earthquake, was analyzed. It is found from an analysis that the critical damage of piles occurred at approximately 3 m above and below the level where a fault crossed the foundation. The damage was destructive that the pile failed in shear and flexure.4) A foundation isolation using expanded poly-sterol (EPS) was proposed, and this was extended to a pile foundation. It was found that by providing a soft layer by EPS around the footing and piles, the plastic deformation of the piles which are subjected to a fault displacement can be mitigated. However an isolation effect cannot be fully activated unless the isolated layer is thick enough to mitigate and isolate the deformation of ground resulted from the fault displacement.5) A damage of a viaduct resulted from a tectonic surface ground movement during a volcanic eruption of Mt. Usu was analysis because of similarity of the tectonic ground movement and a fault displacement. It was found from a pushover analysis which takes account of the lateral confinement effect of concrete that the real damage developed during the tectonic sound movement can be predicted by the pushover analysis with a satisfactory accuracy. Less

由于有许多故障可能导致地面地面破裂，因此，高速公路和铁路等运输设施很难完全不交叉断层。这可能会导致运输设施在不久的将来因断层活动而导致的严重故障。但是，由于这种对策中涉及的问题的困难，很少有研究开发一种理性技术来减轻运输设施损害故障流离失所。这项研究是在1990年至1992年之间进行的，以开发出适当的运输设施以进行故障流离失所的对策。从研究中得出以下结论。1）基于对过去七场地震的故障长度的分析（Nobi，Kita-Tango，Kita-Izu，Kita-Izu，Hyougoken Nanb​​u，Izmit，Izmit和Duzmit和Duzce（Turkey）和Chi Chi Chi（Taiwan）），这是一个比3 m的缺点，而不是3英寸的erseart和Ess的时间。 MW大于7.5的地震中有70％的长度短于3m。2）基于在2000年Totori-Ken Seibu地震期间在Kasho Dam上测得的强大运动记录，据透露，大坝的身体围绕几个十秒钟的厘米定居，且储层的水平迅速下降。从该设置的数值分析中揭示了这是由于该大坝下的隐藏断层破裂而导致的。3）钢琴在Bolu高架桥中的损坏，该钢琴在1999年的Duzce，Turley Eartquake中遭受了断层位移的损害。从分析中可以发现，钢琴的临界损害发生在大约3 m的上方和下方的断层越过基础的水平。桩在剪切和弯曲中失败是破坏性的。4）提出了使用膨胀的聚甲醇（EPS）隔离的基础隔离，并将其扩展到桩基础。已经发现，通过在基础和钢琴周围通过EPS提供软层，可以减轻钢琴的塑性变形。然而，除非隔离层足够厚，以减轻和隔离故障位移而导致的地面变形，否则无法完全激活隔离效果。5）高架桥造成的损坏是由于构造地面地面地面移动在火山的火山喷发过程中，USU是usu的分析，这是由于构造地面地面运动和断层移动的相似性。从俯卧撑分析中发现了混凝土的横向限制效应，即可以通过令人满意的精度来预测构造声音运动过程中产生的实际损害。较少的

项目成果

Kawashima, K. and Shoji, G , Edited by Elnashai, A. S. and Antoniou, S.: "Damage of Bridges in the 1999 Kocaeli, Turkey and Chi-Chi, Taiwan Earthquakes , Implications of Recent Earthquakes on Seismic Risk, Series on Innovation in Structures and Constructi

Kawashima, K. 和 Shoji, G，由 Elnashai, A. S. 和 Antoniou, S. 编辑：“1999 年土耳其科贾埃利地震和台湾 Chi-Chi 地震中的桥梁损坏，近期地震对地震风险的影响，创新系列

中尾吉宏, 田村敬一, 村越潤, 吉田仁司: "構造物の塑性化を考慮した設計地震動"第1回日本地震工学研究発表会・討論会梗概集、日本地震工学会. 1. 66 (2001)

Yoshihiro Nakao、Keiichi Tamura、Jun Murakoshi、Hitoshi Yoshida：“考虑结构塑性的地震运动”摘要，第一届日本地震工程研究报告和讨论，日本地震工程学会 1. 66 (2001)。

Kawashima, K., Shoji, G.: "Damage of Bridges in the 1999 Kocaeli, Turkey and Chi-Chi, Taiwan Earthquakes, Implications of Recent Earthquakes on Seismic Risk"Series on Innovation in Structures and Construction (Edited by Elnashai, A.S.and Antoniou, S.)Impe

Kawashima, K.、Shoji, G.：“1999 年土耳其科贾埃利地震和台湾集集地震中桥梁的损坏，近期地震对地震风险的影响”结构和施工创新系列（Elnashai, A.S. 和编辑）

大町達夫: "台湾集集地震で決壊した石岡ダムの補修と近況"ダム技術. 191. 33-36 (2002)

大町达夫：“台湾集集地震中倒塌的石冈大坝的修复和现状”水坝技术 191. 33-36 (2002)。

永澤洋,市川篤司,三木千壽,名取暢,佐々木栄一: "腐食が原因で取替えられた鋼橋の耐荷力およびその評価"土木学会第55回年次学術講演会. (CD-ROM)(Paper No.A304). (2000)

Hiroshi Nagasawa、Atsushi Ichikawa、Chiju Miki、Nobu Natori、Eiichi Sasaki：“因腐蚀而更换的钢桥的承载能力和评估”第 55 届日本土木工程学会学术年会（CD-ROM）（论文编号：2017） .A304）（2000）。