@article{oai:nagano-nct.repo.nii.ac.jp:00000529,
 author = {服部, 秀人 and 小林, 清 and 峯村, 賢次 and 宮下, 秀樹},
 journal = {長野工業高等専門学校紀要},
 month = {Jan},
 note = {application, In execution management of foundation piles, the bearing capacity of a driven pile is usually estimated by the pile driving formula, assuming that the values of settlement and rebound of the pile are measured precisely. To obtain those values, various measuring methods are used. One is to use the recording paper stuck on the surface of the pile and mark it, and the other is to use instruments such as an electro-optical displacement meter or a high-speed camera. However, the methods mentioned above involve several problems in terms of safety, reliability, workability or operationability. So, the authors devised a system that displays pile displacement in the form of waves simultaneously with the progress of the work by integrating acceleration through analogue circuits. In this report, an outline of this measuring system and an example measurements at the job site are described.},
 pages = {105--113},
 title = {打込み杭の動的変位計測システムについて},
 volume = {18},
 year = {1988}
}