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Visual measurement of pile movements for the foundation work using a high-speed line-scan camera

Title
Visual measurement of pile movements for the foundation work using a high-speed line-scan camera
Author
임준홍
Keywords
line-scan image; visual measurement; pile movement
Issue Date
2008-06
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
PATTERN RECOGNITION, v. 41, No. 6, Page. 2025-2033
Abstract
When a construction company builds a high structure, many piles should be driven into the ground by a hammer whose weight is typically 7000kg in order to make the ground under the structure safe and strong. It is essential to determine whether a pile is penetrated into the ground enough to support the weight of the structure since ground characteristics at different locations are different from each other. In order to measure the pile movements, a specially designed mark is designed and a high-speed line-scan camera is used in this paper. A mark, in which black and white right-angled triangles are stacked, is used for the measurements of movement information for vertical distances, horizontal distances and rotational angles simultaneously. The measurement performance of dynamic characteristics of the pile at impact instant is improved dramatically compared with the equipment using speckle laser sensors. The developed visual measurement system is successfully applied for a real penetration measurement system for building construction. (C) 2007 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0031320307004888http://repository.hanyang.ac.kr/handle/20.500.11754/80469
ISSN
0031-3203
DOI
10.1016/j.patcog.2007.10.025
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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