Wyniki wyszukiwania - BazTech

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Participation of Employees and Students of the Faculty of Geodesy and Cartography in Polar Research

Pasik M., Adamek A., Rajner M., Kurczyński Z., Pachuta A., Woźniak M., Bylina P., Próchniewicz D.

Reports on Geodesy and Geoinformatics

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2016

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Vol. 100

235--252

EN

This year the Faculty of Geodesy and Cartography, Warsaw University of Technology celebrates its 95th jubilee, which provides an opportunity to present the Faculty’s rich traditions in polar research. Employees and students of the faculty for almost 60 years have taken part in research expeditions to the polar circle. The article presents various studies typical of geodesy and cartography, as well as miscellany of possible measurement applications and geodetic techniques used to support interdisciplinary research. Wide range of geodetic techniques used in polar studies includes classic angular and linear surveys, photogrammetric techniques, gravimetric measurements, GNSS satellite techniques and satellite imaging. Those measurements were applied in glaciological, geological, geodynamic, botanical researches as well as in cartographic studies. Often they were used in activities aiming to ensure continuous functioning of Polish research stations on both hemispheres. This study is a short overview of thematic scope and selected research results conducted by our employees and students.

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Geodeci wspierają badania polarne

Pasik M., Gotlib D.

Geodeta : magazyn geoinformacyjny

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2016

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nr 6

28--29

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Monitoring technical conditions of engineering structures using the terrestrial laser scanning technology

Zaczek-Peplinska J., Pasik M., Adamek A., Adamek A., Kołakowska M., Łapiński S.

Reports on Geodesy and Geoinformatics

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2013

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Vol. 95

1--10

EN

The laser scanning technology offers quite new possibilities in the field of the existing monitoring of engineering structures. The basic advantage of the laser scanning technology is huge amount of measuring observations and practically complete geometric and spectral information about the measured structures, which may be required within the short time. In the context of detection of threatens related to deformations and displacements of building structures, the surface - quasi-continuous distribution of measuring points is one of the most important factors. which ensure the possibility to perform correct evaluation of safety conditions of investigated structures. The proposed technological solution offers a series of new possibilities and the resulting methodology of determination of deformations and displacements of various structures, will considerably increase the scope of possible works and analyses. This will also create the new segment of data, which will result in delivery of additional information concerning conditions of the structure to experts from various fields, such as, among others, civil engineering, construction or geotechnique, who monitor the given structure.

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Analiza zachowania gruntu i obiektów budowlanych w rejonie realizacji inwestycji o różnym charakterze oddziaływań

Zaczek-Peplinska J., Pasik M., Popielski P., Łapiński S.

Archiwum Instytutu Inżynierii Lądowej

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2013

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Nr 15

99--117

PL

Artykuł przedstawia poligony badawcze oraz wyniki badań zachowania gruntu i obiektów budowlanych w bliskim sąsiedztwie kilku inwestycji o różnym charakterze oddziaływań takich jak: głębokie wykopy, drążenie tuneli metra tarczami mechanicznymi oraz wznoszenie budynków. Monitorowany teren znajduje się w ścisłym centrum Warszawy. Badania obejmują pomiary geodezyjne przemieszczeń i deformacji monitorowanych obiektów przy wykorzystaniu takich technik jak: niwelacja precyzyjna, precyzyjne pomiary kątowo-liniowe, skanowanie laserowe, badanie zmian nachyleń za pomocą pochyłomierzy. W analizowanym rejonie wykonano kilka modeli numerycznych dotyczących oddziaływania na obiekty sąsiednie, które zostały wykalibrowane na podstawie rezultatów pomiarów przeprowadzonych przed i w trakcie realizacji kolejnych inwestycji. Parametry gruntowe zostały potwierdzone za pomocą metody sejsmiki powierzchniowej z wykorzystaniem autorskiego współczynnika redukcyjnego. W zakresie analizy oddziaływań nowych inwestycji na istniejące obiekty porównano wyniki monitoringu z wynikami prognoz numerycznych wynikających z przygotowanych modeli. Wykorzystanie omówionych w artykule poligonów badawczych zaplanowane jest na okres wieloletni obejmujący realizacje kilku inwestycji obejmujących wyburzanie istniejących a wznoszenie nowych budynków.

EN

The paper presents a research sites and results of analysis of behaviour of the ground and structures located within the close neighbourhood of several investment units, characterised by diversified impacts, including: deep excavations, mining the underground railway tunnels using tunnel boring machines and construction of buildings. The monitored site is located within the inner centre of Warsaw. Performed analysis covers geodetic surveys of displacements and deformations of particular objects, using such techniques, as: precise levelling, precise angular and linear surveys, laser scanning, investigations of variations of inclinations with the use of inclinometers. Several numerical models have been developed for the analysed area, concerning the impacts on neighbouring objects; those models were calibrated basing on results of surveys performed before and in the course of implementation of particular investment units. Ground parameters were confirmed by means of the surface seismic method, with the use of the reduction coefficient, developed by the authors. In the field of analysis of impacts of new investments on existing structures, results of monitoring were compared with results of numerical predictions, resulted from developed models. Utilisation of the research sites, discussed in the paper, is planned for many years, covering implementation of several investment units, including demolition of the existing and construction of new buildings.

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Evaluation of the usefulness of the "millimeter GPS" system for determination of elevations of points in topographic surveys

Malarski R., Pasik M.

Reports on Geodesy

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2011

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z. 1/90

279--286

EN

Commencement of the ASG-EUPOS national network in 2008 resulted in rapid development of utilisation of satellite technologies for topographic surveys. Surveying experiments, performed in 2008 and 2009 at the chair of Engineering Geodesy and Topographic Surveys pointed to high usefulness of the RTK technology for topographic surveys. Research works, carried out at the surveying test site close to Grybów at the Nowy Sącz District, performed with the use of NAWGEO services of the ASG-EUPOS network proved that the expected maximum mean errors of horizontal locations and the ellipsoidal elevation of points, may be of the order of approximately 0.04m and 0.06 m, respectively (Malarski et al., 2010). Considering additional errors of the quasigeoid model, the issue is to obtain the centimetre accuracy in the system of normal elevations, which is required for topographic surveys. It seems that the proposal of Topcon company, concerning the mmGPS technology (Millimeter GPS) may meet those requirements.

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Historia rozwoju technologii w pomiarach sytuacyjno-wysokościowych, Cz. 1

Łapiński S., Pasik M.

Przegląd Geodezyjny

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2011

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R. 83, nr 10

13-17

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Historia rozwoju technologii w pomiarach sytuacyjno-wysokościowych, Cz. 2

Łapiński S., Pasik M.

Przegląd Geodezyjny

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2011

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R. 83, nr 12

7-14

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Integracja polskich osnów podstawowych z osnowami europejskimi

Pasik M.

Przegląd Geodezyjny

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2005

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R. 77, nr 4

19-25

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Pomiary gradientometryczne w systemach wysokości

Pasik M.

Geodeta : magazyn geoinformacyjny

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2000

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nr 6

30--33

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Z wizytą w Europie

Pasik M.

Geodeta : magazyn geoinformacyjny

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1999

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nr 11

76--77