DAMAGE DUE TO THE 1985 MEXICO EARTHQUAKE AND THE GROUND CONDITIONS

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概要

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• This paper presents some types of the damage caused by the Michoacan, Mexico Earthquake of September 19,1985 and describes the relations between those damage and their ground conditions based on the site investigation in Mexico City and the epicentral zone in January, 1986. The lessons learned from the Mexico Earthquake through the site investigation, are summarized as follows. (1) Tremendous damage in Mexico City at 400 km distance from the epicenter, was triggered by the amplifications of the ground motions through the soft lacustrine clay deposit which is surrounded by hard volcanic rock formations. (2) At the epicentral zone the damage to structures was relatively small in consideration of the recorded values of the peak acceleration which are 150 to 170 gals because most of structures stand on the firm coastal terrace. Only the City of Lazaro Cardenas, which was developed on the alluvial low ground, were severely attacked by the earthquake. Especially the factories on the reclaimed land were damaged due to the liquefactions. (3) Comparison between the microtremor measurement on La Villita Dam and the FEM analysis suggests that the dam responded to the earthquake as a high dam adding the thickness of the foundation to the height of the dam. (4) In the City of Guzman which is located 200km to the northwest of the epicenter and developed in the basin like Mexico City, most of the houses and pavements were damaged along the small gaps which were considered to relate a fault existing under the ground in the volcanic topography.

• 社団法人地盤工学会の論文
• 1988-09-15

著者

• 安田 進

  Kyushu Institute Of Technology

• 河邑 眞

  Toyohashi University Of Technology

• 大町 達夫

  Tokyo Institute of Technology

• 三村 長二郎

  Kajima Corporation

• 中村 豊

  Railway Technical Research Institute

関連論文

• ψ_u=0,C_u=⃥0で与えられる土の地震時受働土圧の算定
• φu=O,Cu≠Oで与えられる土の地震時受働土圧の算定
• SITES OF RELIQUEFACTION CAUSED BY THE 1983 NIHONKAI-CHUBU EARTHQUAKE
• INFLUENCE OF SEEPAGE FLOW ON EARTH PRESSURE AGAINST RETAINING WALL
• PREDICTION OF LATERAL DISPLACEMENT OF ANCHORED BULKHEADS INDUCED BY SEISMIC LIQUEFACTION
• 裏込め土中の浸透水の解析とその擁壁の主働土圧への適用
• 339 裏込め土中の浸透水の解析とその擁壁の主働土圧への適用(『土質工学会論文報告集』Vol. 20,No. 1(1980年3月発行)掲載論文の概要)
• 裏込め土中の浸透水の解析とその擁壁の主働土圧への適用
• 〔回答〕 (市原松平・河邑真・伊藤文隆共著"豪雨時の主働土圧の算定"への討議(土木学会論文報告集第295号・1980年3月掲載))
• 豪雨時の主働土圧の算定
• 1985年メキシコ地震被害と地盤
• DAMAGE DUE TO THE 1985 MEXICO EARTHQUAKE AND THE GROUND CONDITIONS

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