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Publications (38)
This paper presents a comparison of geotechnical soil testing with the use of Piezocone Penetration Test (CPTu) and Dynamic Probing Heavy (DPH) in a uniform coarse-grained medium located in southwest part of Poland. The soil medium was identified in detail. The interpretation of results included both grain-size analysis of samples from drillholes a...
The paper deals with identification of the soil types deposited in overburden heap and approximation of their arrangement in 3D heap model. The method of segmentation of the soil types based on deconvolution of results of CPTu tests performed in heap, is proposed. Two approaches distinguishing constituents of the soil either based on one or two mea...
The paper examines the high and low pass spatial filters used in the Cone Penetration Test (CPT) recordings in the soil and aims to demonstrate their usefulness and effectiveness in the interpretation of CPT measurements. The procedure of low-pass inverse filtration was used to reduce the effects associated with the occurrence of thin layers. High-...
The present paper responds to the challenge of modeling uncertainty in soil strength parameters concerning its spatial variability in a situation of limited soil information. Understanding this uncertainty allows for the management of the risk of geotechnical structure failure. In the present work, this uncertainty is identified based on signals fr...
Assessment And VerificAtion of correlAtions in cPtu testing on the exAmPle of soil from the WroclAW surroundings (PolAnd) the paper presents the results of a series of cone Penetration test cPtu performed near the city of wroclaw (Poland). the tests were carried out in 13 testing points located in close distance to each other. to verify the results...
The article presents both an application and the purpose of the observation method in the control of stacker capacity. It lists the types of the measured (observed) quantities, which serve as a basis for the observation method. It also describes the procedure of the method and discusses its individual steps. It further provides examples of applying...
![SBTn classes defined by Robertson [8] and respective Ic range values.](profile/Wojciech-Pula/publication/351016822/figure/tbl1/AS:1022350984216578@1620758877935/SBTn-classes-defined-by-Robertson-8-and-respective-Ic-range-values_Q320.jpg)
The paper focuses on two-dimensional (2D) analyses of a bridge abutment based on a spatially variable soil. The analysis was carried out to evaluate the settlement of the bridgehead. The numerical model consists of a reinforced concrete support structure, embankment and natural soil. Moreover, frictional contact between the soil and the structure i...
Filtration coefficient is a basic parameter to assess hydrogeological features of foundation soil and also the material to be built into geoenginering structures. It can be determined from laboratory testing, empirical formulae based on simple laboratory tests, and also from direct or indirect field tests. Each of these method may lead to different...
The paper deals with reliability analysis of cantilever sheet pile wall located in non-cohesive soil with random properties. Spatial variability of friction angle has been described using random fields theory. The influence of both vertical as well as horizontal scale of fluctuation on the mechanical response of sheet pile wall is investigated. Def...
The article classifies Polish voivodeships into appropriate groups with a similar level of occupational safety in the construction industry. The basis for the adopted classification was statistical data published by the Central Statistical Office regarding population, employment in the construction industry, the value of construction production and...
The paper deals with application of CPTu test results for the probabilistic modeling of lignite mine waste dump soils. The statistical measures are obtained using the results from four CPTu tests performed in a close range in the lignite mine dumping ground in Bełchatów (Central Poland). Both the tip resistance q c as well as local friction f s are...
The modern recognition of subsoil with the use of CPTu static probes allows to obtain detailed information necessary for the designing. Registered basic two quantities, i.e. cone resistance qc and friction on the sleeve fs, often become direct data, which allow to estimate bearing capacity of the base and the side surface of the pile. Direct method...
In the paper the variability of soil properties has been examined. The variability has been modeled using Random Fields. Both point statistics as well as vertical scales of fluctuation for two chosen correlation model has been obtained using CPTu results from southwestern Poland. Vertical scales of fluctuation have been assessed using two different...
Based on a real-life example, the report presents the methodology and the process of adapting in situ measurements from static CPTu probing for an application in a design process, using direct methods of driven pile capacity estimation. The report discusses two approaches. One of them is based on a real-life original CPTu measurement involving prel...
Potrzeba rekultywacji lub wykorzystania do celów przemysłowych terenów zwałowiskowych [15] rodzi pilną potrzebę opracowania metodologii badań geotechnicznych, klasyfikacji i opisu gruntów zwałowych jako jednej z grupy gruntów antropogenicznych [6]. W przypadku gruntów zwałowych podstawowa trudność polega na silnej zmienności tych ośrodków. Obecnie...
The paper deals with reliability analysis of sheet pile wall located in soil with strong spatial variability of strength properties. The purely frictional soil with the strength governed with Mohr-Coulomb criterion has been considered. Spatial variability of friction has been described using random fields theory. Implementation of Local Average Sub...
The unit weight, as a basic physical feature of soil, is an elementary quantity, and knowledge of this parameter is necessary in each geotechnical and geo-engineering task. Estimation of this quantity can be made with both laboratory and field techniques. The paper comprises a multi-scale evaluation of unit weight of cohesive soil, based on several...
Na przykładzie rzeczywistym prezentowana jest metodyka i proces adaptacji pomiarów in situ sondowania statycznego CPTU do wykorzystania w procesie projektowym (metodami bezpośrednimi oceny nośności) pali
wciskanych. Omówione zostały dwa podejścia. Pierwsze, bazujące na rzeczywistym oryginalnym pomiarze CPTU z wstępnym rozpoznaniem gruntu oraz drugi...
The paper deals with application of CPTu test results for the probabilistic modeling of dumping grounds. The statistical measures use results from 42 CPT test points located in the lignite mine dumping ground from the region of Central Europe. Both the tip resistance qc as well as local friction fs are tested. Based on the mean values and standard...
W pracy przedstawiono analizę oceny stopnia zagęszczenia określonego za pomocą sondowania dynamicznego DPH oraz sondowania statycznego CPTU w gruncie gruboziarnistym. Szczegółowo rozpoznano ośrodek gruntowy uwzględniając wyniki analizy granulometrycznej prób gruntowych otrzymanych z wierceń. Do oceny stopnia zagęszczenia zastosowano zalecenia normo...
Sondowania statyczne CPT stosowane są w geoinżynierii od blisko 50 lat. Na przełomie dziesięcioleci zmieniały się techniki badawcze oraz interpretacyjne. Pierwotnie mechaniczne końcówki sond CPTM, zwane stożkami Be-gemanna, zostały zastąpione elektrycznymi CPTU. Dzięki elektronice i komputeryzacji po-miary stały się precyzyjniejsze, rejestracja do-...
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 d...
The paper presents methods for assessing pile capacity based on the recognition of subsoil by the use of a static CPTU probe. Feasible methods, under real conditions, for direct assessment of the pile bearing capacity made with CFA technology are presented. Calculations were performed for a single pile and referred to the method being in accordance...
