期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2009
卷号：19
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：The geotechnical laboratory at Gdańsk Polytechnic conducts investigation of the relocation of soil under the downward pressure of a building foundation footing. Tests are carried out in a device specially constructed for the purpose,i.e. a box with one of its walls made of glass. A typical experiment conducted with the use of that device is the one involving specially prepared sand, which is laid alternately in streaks of brighter and darker shades. As the foundation footing is placed, the ground gives in,and the directions in which the sand moves are visible through the glass. One drawback of that method is the fact that it is impossible to measure the direction and length of the sand relocations. The method can be developed by replacing streaks of sand with markers adhering to the glass. The method was confirmed as useful in several tests. The technique of single-image digital photogrammetry makes it possible to determine the directions and lengths of relocated markers. This paper presents the results of one such experiment,along with a number of suggestions of how they may be presented graphically,and how the streaks may be generated digitally. A method is also examined as regards calculating the fractal dimension,which describes the dynamics of changes that may be observed in the ground being deformed.
其他摘要：W laboratorium geotechnicznym Politechniki Gdańskiej prowadzone są badania przemieszczania się gruntu naciskanego stopą fundamentową budowli. Odbywa się to w urządzeniu specjalnie skonstruowanym dla tego celu. Jest to skrzynia z jedną ścianką wykonaną ze
