{"id":86,"date":"2025-09-26T16:24:31","date_gmt":"2025-09-26T07:24:31","guid":{"rendered":"https:\/\/e-defense.bosai.go.jp\/eng\/?page_id=86"},"modified":"2025-12-09T13:47:32","modified_gmt":"2025-12-09T04:47:32","slug":"overview","status":"publish","type":"page","link":"https:\/\/e-defense.bosai.go.jp\/en\/overview\/","title":{"rendered":"Overview of E-Defense"},"content":{"rendered":"<main>\r\n    <section class=\"second about overview\">\r\n      <div class=\"bg\">\r\n        <h2>About E-Defense<\/h2>\r\n      <\/div>\r\n      <div class=\"breadcrumb\">\r\n        <ul>\r\n          <li><a href=\"\/en\/\">Home<\/a><\/li>\r\n          <li><a href=\"about_index\/\">About E-Defense<\/a><\/li>\r\n          <li class=\"current\">Overview of E-Defense<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n      <div class=\"inner02\">\r\n        <div class=\"index\">\r\n          <ul>\r\n            <li><a href=\"message\/\">Message from the Director<\/a><\/li>\r\n            <li class=\"current\"><a href=\"overview\/\">Overview of E-Defense<\/a><\/li>\r\n            <li><a href=\"facility\/\">E-Defense Facilities<\/a><\/li>\r\n            <li><a href=\"member\/\">Members at E-Defense<\/a><\/li>\r\n          <\/ul>\r\n        <\/div>\r\n        <div class=\"contents\">\r\n          <h3>Overview of E-Defense<\/h3>\r\n          <section class=\"overview\">\r\n            <h4>Overview<\/h4>\r\n            <ul>\r\n              <li>E-Defense is the world\u2019s largest shaking table test facility, capable of shaking full-scale structures weighing up to 1,200 tons using three-dimensional seismic motions until they collapse.<\/li>\r\n              <li>The 300m<sup>2<\/sup> shaking table can accurately reproduce the ground motions recorded during the 1995 Kobe Earthquake and the 2011 Tohoku Earthquake.<\/li>\r\n              <li>Since beginning operation in 2005, the facility has successfully conducted 127 experiments without accident. (As of May 20, 2024)<\/li>\r\n              <li>Available as a shared facility for use by various institutions (34 joint research projects, 52 facility rentals).<\/li>\r\n              <li>Total construction cost: approx. 45 million yen.<\/li>\r\n              <li>Promoting research and development (in-house and joint research) as well as facility rental by utilizing experimental data that accurately reproduces behavior under real-world conditions at E-Defense (including damage and response of countermeasure technologies).<\/li>\r\n            <\/ul>\r\n            <div class=\"figure_box\">\r\n              <figure><img decoding=\"async\" src=\"https:\/\/e-defense.bosai.go.jp\/en\/wp-content\/themes\/e-defense\/assets\/img\/overview_01.jpg\" alt=\"E-Defense Shaking Table\"\/>\r\n                <figcaption>E-Defense Shaking Table<\/figcaption>\r\n              <\/figure>\r\n              <figure><img decoding=\"async\" src=\"https:\/\/e-defense.bosai.go.jp\/en\/wp-content\/themes\/e-defense\/assets\/img\/overview_02.jpg\" alt=\"Hyogo Earthquake Engineering Research Center (Miki City, Hyogo Prefecture), where E-Defense is located\"\/>\r\n                <figcaption>Hyogo Earthquake Engineering Research Center (Miki City, Hyogo Prefecture), where E-Defense is located<\/figcaption>\r\n              <\/figure>\r\n            <\/div>\r\n          <\/section>\r\n          <section class=\"logo\">\r\n            <h4>Logo<\/h4>\r\n            <div class=\"logo_box\">\r\n              <figure><img decoding=\"async\" src=\"https:\/\/e-defense.bosai.go.jp\/en\/wp-content\/themes\/e-defense\/assets\/img\/logo_mark.png\" alt=\"E-Defense\"\/><\/figure>\r\n              <p>The nickname \u201cE-Defense,\u201d with the \u201cE\u201d representing Earth, expresses the expectation for research and development aimed at preventing disasters on a global scale and protecting lives and property.<br>\r\n                The logo depicts cracks in the ground and the occurrence of earthquakes, as well as the three-dimensional motion of the three-dimensional earthquake testing facility, represented in three colors.<\/p>\r\n            <\/div>\r\n          <\/section>\r\n          <section>\r\n            <h4>Basic Specifications<\/h4>\r\n            <table>\r\n              <thead>\r\n                <tr>\r\n                  <th>Items<\/th>\r\n                  <th colspan=\"2\">Specifications<\/th>\r\n                <\/tr>\r\n              <\/thead>\r\n              <tbody>\r\n                <tr>\r\n                  <th>Maximum load capacity<\/th>\r\n                  <td colspan=\"2\">1,200ton<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                  <th>Table size<\/th>\r\n                  <td colspan=\"2\">20m\u00d715m=300m<sup>2<\/sup><\/td>\r\n                <\/tr>\r\n                <tr>\r\n                  <th>Driving type<\/th>\r\n                  <td>Horizontal<\/td>\r\n                  <td>Vertical<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                  <th>Max acceleration<\/th>\r\n                  <td>900cm\/s<sup>2<\/sup><\/td>\r\n                  <td>1,500cm\/s<sup>2<\/sup><\/td>\r\n                <\/tr>\r\n                <tr>\r\n                  <th>Max velocity<\/th>\r\n                  <td>200cm\/s<\/td>\r\n                  <td>70cm\/s<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                  <th>Max displacement<\/th>\r\n                  <td>\u00b1100cm<\/td>\r\n                  <td>\u00b150cm<\/td>\r\n                <\/tr>\r\n              <\/tbody>\r\n            <\/table>\r\n          <\/section>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n  <\/main>","protected":false},"excerpt":{"rendered":"About E-Defense Home About E-Defense Overview of E-Defense Message from the Director Overview of E-Defense 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