{"id":3141,"date":"2025-10-29T11:56:19","date_gmt":"2025-10-29T02:56:19","guid":{"rendered":"https:\/\/xb317241.xbiz.jp\/?page_id=3141"},"modified":"2025-12-25T10:47:47","modified_gmt":"2025-12-25T01:47:47","slug":"eastern-japan","status":"publish","type":"page","link":"https:\/\/www.takeuchi-const.co.jp\/en\/earthquake\/eastern-japan\/","title":{"rendered":"Report on Properties Affected by the Great East Japan Earthquake"},"content":{"rendered":"\n

Property Report: Comparison Between Conventional Methods and the TNF Method \u2014 Great East Japan Earthquake<\/h2>\n\n\n\n

\u201cSeismic Intensity 6\u2212\u201d: Liquefaction Effectively Suppressed<\/h3>\n\n\n\n
    \n\n
  1. The upper soil layer at this site consists of a silt layer deposited to a depth of approximately 19 m.<\/li>\n\n\n\n
  2. The minimal impact observed from the earthquake is believed to be due to the building responding integrally with the full-area improved ground layer, which reduced seismic motion input between the bottom of the improved layer and the underlying ground.<\/li>\n\n\n\n
  3. The confinement (\u201cenclosure\u201d) effect provided by the full-area improved layer clearly demonstrates that the occurrence of liquefaction was effectively suppressed.<\/li>\n\n\n\n
  4. Even if liquefaction were to occur locally, the full-area improved layer resists it integrally.<\/li>\n\n<\/ol>\n\n\n\n
    \n\n\n\n\n\n\n
    Property Name<\/td>\nConstruction Period<\/td>\nImproved Area (m2<\/sup>)<\/td>\nImprovement Volume (m3<\/sup>)<\/td>\nScale<\/td>\nStructure Type<\/td>\n<\/tr>\n
    Home Improvement Store (name withheld)<\/td>\nApr. 2009<\/td>\n8,989<\/td>\n17,618<\/td>\nSingle-story<\/td>\nSteel structure<\/td>\n<\/tr>\n
    Retail Store (name withheld)<\/td>\nApr. 2009<\/td>\n2,485<\/td>\n5,322<\/td>\nSingle-story<\/td>\nSteel structure<\/td>\n<\/tr>\n
    Retail Store (name withheld)<\/td>\nApr. 2009<\/td>\n2,630<\/td>\n6,602<\/td>\nSingle-story<\/td>\nSteel structure<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    Location: Namegata City, Ibaraki Prefecture \/ Photo taken: March 17, 2011<\/figcaption>\n<\/figure>\n\n\n\n

    TNF Method<\/h4>\n\n\n\n
    \n\n
    \n\"Continued\n
    Continued operations with no interior or exterior damage<\/figcaption>\n<\/figure>\n\n\n\n
    \n\"No\n
    No level differences or cracking observed<\/figcaption>\n<\/figure>\n\n\n\n
    \n\"No\n
    No floor cracking observed<\/figcaption>\n<\/figure>\n\n<\/div>\n\n\n\n

    Nearby Conventional Construction<\/h4>\n\n\n\n
    \n\n
    \n\"Nearby\n
    Nearby Store A: Liquefaction observed at multiple locations<\/figcaption>\n<\/figure>\n\n\n\n
    \n\"Nearby\n
    Nearby Store A: Undulating pavement (top)
    Gap formed between building and pavement (bottom)<\/figcaption>\n<\/figure>\n\n\n\n
    \n\"Nearby\n
    Nearby Store B: Entrance glass damaged and business suspended (top)
    Large cracks observed in the parking area (bottom)<\/figcaption>\n<\/figure>\n\n<\/div>\n\n\n\n

    \u201cSeismic Intensity 6+\u201d: No Uplift or Structural Failure Observed<\/h3>\n\n\n\n
      \n\n
    1. The upper ground layer at this site consists of loam deposited to a depth exceeding 10 m.<\/li>\n\n\n\n
    2. While strong shaking acts directly on buildings supported by piles, buildings with foundations constructed using the TNF Method are considered to experience reduced seismic intensity.<\/li>\n\n\n\n
    3. Even in the event of ground settlement, no uplift-related or similar structural issues were observed.<\/li>\n\n<\/ol>\n\n","protected":false},"excerpt":{"rendered":"

      Property Report: Comparison Between Conventional Methods and the TNF Method \u2014 Great East Japan Earthquake \u201cSeismic Intensity 6\u2212\u201d: Liquefaction Effectively Suppressed Property Name Construction Period Improved Area (m2) Improvement Volume (m3) Scale Structure Type Home Improvement Store (name withheld) Apr. 2009 8,989 17,618 Single-story Steel structure Retail Store (name withheld) Apr. 2009 2,485 5,322 Single-story […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3137,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3141","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.takeuchi-const.co.jp\/en\/wp-json\/wp\/v2\/pages\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.takeuchi-const.co.jp\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.takeuchi-const.co.jp\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.takeuchi-const.co.jp\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.takeuchi-const.co.jp\/en\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.takeuchi-const.co.jp\/en\/wp-json\/wp\/v2\/pages\/3141\/revisions"}],"predecessor-version":[{"id":4668,"href":"https:\/\/www.takeuchi-const.co.jp\/en\/wp-json\/wp\/v2\/pages\/3141\/revisions\/4668"}],"up":[{"embeddable":true,"href":"https:\/\/www.takeuchi-const.co.jp\/en\/wp-json\/wp\/v2\/pages\/3137"}],"wp:attachment":[{"href":"https:\/\/www.takeuchi-const.co.jp\/en\/wp-json\/wp\/v2\/media?parent=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}