Joint research on the behavior of castle stone walls with Nagasaki University.
In 2016, due to the Kumamoto earthquake, many stone walls within Kumamoto Castle collapsed; however, some did not completely collapse, and significant deformations such as bulging were observed. In response to this, monitoring was conducted on the stone walls where significant deformations were confirmed, using tilt sensors to understand the behavior of the stone walls during normal conditions and during earthquakes (abnormal conditions).
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basic information
■Gantaro F-Alert 【Sensor Section】 ● Chip: MEMS accelerometer ● Resolution: 0.001° ● Measurement Accuracy: ±0.002° ● Axis Direction: Two axes (X・Y) ● Measurement Range: -30° to +30° ● Shape: Cylindrical stainless steel (outer diameter 20mm, length 50cm) * Includes internal temperature and residual voltage measurement functions 【Logger and Communication Section】 ● Measurement Interval: Constant 10 minutes (standard) ● Communication Interval: Constant 10 minutes (standard)
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Applications/Examples of results
【Purpose】 - Behavior monitoring of natural slopes, cut slopes, fill slopes, concrete retaining walls, stone masonry blocks, boulders, unstable floating stones, temporary protective fences, etc. 【Track Record】 *Track record of conventional type sensors - Over 1,700 units (domestic: over 1,100 units, overseas: over 600 units)
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Company information
Our company was founded in 1946, shortly after the end of the war, at a time when Japan's post-war reconstruction required an increase in food production and energy development. It was established with a group of engineers possessing the necessary development technologies at its core. Since then, we have contributed to civil engineering projects, focusing on roads, rivers, and dams, as well as the development and enhancement of various public facilities and industrial infrastructure, utilizing our expertise in geological surveys, ground analysis, and civil planning and design. Today, we have gained trust from various ordering organizations and have had the opportunity to demonstrate our capabilities, expanding our operations both nationwide and overseas. Starting this fiscal year, we are pursuing the CKC Sustainable Growth Vision, aiming to become a "one and only company that contributes to the formation of a safe and secure national land and the development of a sustainable future society."
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