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    Wyświetlanie 1-4 z 4
    Tytuł:
    On the interpretation of seismic cone penetration test (SCPT) results
    Autorzy:
    Bagińska, I.
    Janecki, W.
    Sobótka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/178824.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    badania sejsmiczne
    fala sejsmiczna
    test sejsmiczny
    SCPTU
    sondowanie CPTU
    penetracja stożka
    testy CPTU
    seismic sounding SCPTU
    cone penetration
    cone penetration tests CPTu
    seismic research
    seismic wave
    seismic tests
    Opis:
    The paper deals with the methodology of performing and interpretation of seismic cone penetration test (SCPT). This type of test is used to determine velocity of the seismic wave in the soil medium. This study is focused on shear wave. The wave is triggered on the ground surface by hitting an anvil with a sledgehammer. Then, vibrations induced at different depths are measured. Based on recorded measurements wave velocity (Vs) and thus also small strain shear modulus Gmax may be calculated. An interpretation of exemplary seismic test results is presented. Crossover and cross-correlation methods are discussed and another, more adequate one is featured and then applied in the interpretation example. Conditions for correct test performance and interpretation are discussed.
    Źródło:
    Studia Geotechnica et Mechanica; 2013, 35, 4; 3-11
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Landslide investigations by static sounding with pore pressure measurements (CPTU), ground penetration radar techniques (GPR) and other chosen methods
    Autorzy:
    Bednarczyk, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1186179.pdf
    Data publikacji:
    2004
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    badanie osuwisk
    testy geotechniczne
    testy in situ
    testy laboratoryjne
    sondowania statyczne CPTU
    badania georadarowe
    pomiary GPS
    landslide investigations
    geotechnical in situ and laboratory tests
    CPTU
    GPR
    GPS
    Opis:
    The main subject of the paper is the practical application of the existing geotechnical and geo-environmental engineering techniques for the purpose of ground characterisation in landslide areas. Special interest is given to the landslide issues in difficult geotechnical and geological conditions and evaluation of soil design parameters by in situ tests. In the paper, usage of CPTU connected with reference laboratory tests, GPR and other monitoring techniques in landslide and potential landslide areas are presented. Research was based on investigations in Polish opencast mines, Carpathian flysch sediments and Norwegian clays. Presented data are based on the exemplar landslide projects. The background of presented CPTU studies is slope stability evaluations of the Polish opencast brown coal mines undertaken during a research stay at the Norwegian University of Science and Technology (NTNU) with support of the Norwegian Research Council and NATO Advanced Fellowship Programme. Landslide investigations by GPR and GPS technique were performed on Carpathian flysch sediments in Lachowice and Wapienne (Poland).
    Źródło:
    Polish Geological Institute Special Papers; 2004, 15; 19-28
    1507-9791
    Pojawia się w:
    Polish Geological Institute Special Papers
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geotechnical and geophysical methods for characterisation of the soil and rock design parameters in mass movements areas
    Autorzy:
    Bednarczyk, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1182865.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    badania gruntów
    testy CPTU
    ruchy masowe
    soil investigations
    CPTU tests
    mass movements risks
    Opis:
    Artykuł oparto na badaniach autora oraz na wnioskach z międzynarodowej konferencji ISC-2, International Site Characterisation Porto 2004, zorganizowanej przez International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), TC-16 in situ Testing, Uniwersytet w Porto (FEUP), International Society of Rock Mechanics (ISRM), International of Association Engineering Geology (IAEG), Geo-Institute of the American Society of Civil Engineers (ASCE), Portuguese Association of Engineers (OE) oraz British Council (BC), w dniach 19-22 września, 2004 w Porto. Konferencja dotyczyła nowych geotechnicznych i geofizycznych metod badań gruntów oraz zagrożeń geodynamicznych, osuwiskowych i sejsmicznych.
    Źródło:
    Polish Geological Institute Special Papers; 2005, 20; 27--34
    1507-9791
    Pojawia się w:
    Polish Geological Institute Special Papers
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka lessów lubelskich jako podłoża budowlanego
    Characteristics of the Lublin loess as a building subsoil
    Autorzy:
    Nepelski, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2076162.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    parametry sondowania
    testy ciśnieniomierzy
    CPTU
    DMT
    typy facji lessowych
    less
    pressuremeter tests
    loess facies types
    loess
    Opis:
    The loess subsoil constitutes over 50% of the Lublin area and determines the geotechnical conditions of the western side of the River Bystrzyca. The paper discusses the geological structure of this part of Lublin and presents an analysis of the results of field research carried out by the author. The research methodology and the method of deriving parameters for the loess subsoil are also proposed. The Lublin loesses were divided into three main facies groups: aeolian (typical loess), aeolian-diluvial and aeolian-alluvial. The basis for the division and parametric characteristics of individual facies were mainly in-situ tests: CPT/CPTU static soundings, DMT/SDMT flat dilatometer tests and PMT Menard pressuremeter tests. The collected data allowed characterizing each of the facies groups and developing a synthetic geological cross-section representing the geological structure of the western part of Lublin. The number of analysed tests allowed stating that the data from CPT/CPTU static soundings are representative for Lublin. Data from DMT/SDMT tests can be considered representative, but further research is needed to refine them and, for example, to separate them by facies. Data from pressuremeter tests should be treated as preliminary. The analyses show that the most common facies in Lublin is silty aeolian one called typical loess, which, according to the author, constitutes approximately 75-80%, and their parameters are of key importance for the design of buildings. The remaining facies groups are about 8-15% for aeolian-diluvial loess and 8-10% for aeolian alluvial loess. Typical loesses are macroscopically homogeneous, but their varying stiffness is reflected in in-situ tests. The basic research method for loess subsoil should be CPT/CPTU static soundings, while the most representative parameter for geotechnical layers is the cone resistance qc. Details of the geological structure and parameters should be performed with DMT, SDMT and PMT tests, as well as laboratory tests, the necessary scope of which can be determined after the development of the subsoil model from the results of CPT tests.
    Źródło:
    Przegląd Geologiczny; 2021, 69, 12; 835--849
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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