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Annals of Warsaw University of Life Sciences, Land Reclamation最新文献

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Shear strength of clayey soils from the vicinity of Gorlice and Ciężkowice Gorlice和Ciężkowice附近粘土的抗剪强度
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-09-01 DOI: 10.1515/sggw-2015-0027
T. Zydroń, Ewa Prawica
{"title":"Shear strength of clayey soils from the vicinity of Gorlice and Ciężkowice","authors":"T. Zydroń, Ewa Prawica","doi":"10.1515/sggw-2015-0027","DOIUrl":"https://doi.org/10.1515/sggw-2015-0027","url":null,"abstract":"Abstract The work presents results of maximum and residual strength tests of six clayey soils from the landslide areas near Gorlice and Ciężkowice. The tests were carried out in a direct shear apparatus on samples of dimensions 60 × 60 mm that were sheared at least three times. A shearing strain rate was equal 0.1 mm·min–1, and the range of horizontal deformation of the samples was equal 20%. The results of the tests revealed that multiple shearing of the soil caused a significant decrease of its shear strength, resulting in significant changes in cohesion, and the smaller changes in the angle of internal friction. It was shown that the three-time shearing reduced the initial shear strength of about 50%, and further three series of shearing decreased it approximately 15% more. The study also showed that by using a Coulomb-Mohr shear strength linear equation, the analyzed soils had a little residual cohesion. Therefore, to describe the characteristics of the residual strength, there were used two non-linear equations proposed by Mesri and Shanien (2003) and Lade (2010), which led to the same results. It was also shown that the use of non-linear characteristics of the residual strength at low values of the normal stresses gave more unfavourable results of stability calculations in relation to the method based on the linear strength characteristic taking into consideration the presence of the residual cohesion.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125286887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effects of environmental changes and human impact on the functioning of mountain river channels, Carpathians, southern Poland 环境变化和人类对波兰南部喀尔巴阡山脉山区河道功能的影响
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-09-01 DOI: 10.1515/sggw-2015-0029
K. Krzemień, Elżbieta Gorczyca, M. Sobucki, Maciej Liro, M. Łyp
{"title":"Effects of environmental changes and human impact on the functioning of mountain river channels, Carpathians, southern Poland","authors":"K. Krzemień, Elżbieta Gorczyca, M. Sobucki, Maciej Liro, M. Łyp","doi":"10.1515/sggw-2015-0029","DOIUrl":"https://doi.org/10.1515/sggw-2015-0029","url":null,"abstract":"Abstract In the northern slope of the Carpathian Mountains and in their foreland, river and stream channels have been significantly transformed by human impact. These transformations result from changing land use in river basins and direct interference with river channels (alluvia extraction, engineering infrastructure, channel straightening). Anthropogenic impacts cause significant changes in the channel system patterns leading to increased impact of erosion. This mainly leads to the channelling of the fluvial system. This article reviews studies of structure and dynamics of Carpathian river channels conducted based on the methodology of collection of data on channel systems, developed in the Department of Geomorphology of the Institute of Geography and Spatial Management, Jagiellonian University.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129473475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Thermal growing season in Poland calculated by two different methods 用两种不同的方法计算波兰的热生长季节
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-09-01 DOI: 10.1515/sggw-2015-0030
M. Kępińska-Kasprzak, P. Mager
{"title":"Thermal growing season in Poland calculated by two different methods","authors":"M. Kępińska-Kasprzak, P. Mager","doi":"10.1515/sggw-2015-0030","DOIUrl":"https://doi.org/10.1515/sggw-2015-0030","url":null,"abstract":"Abstract Methods of identifying dates of passing determined threshold value are of significant importance in the study of thermal growing seasons. The difficulty to determine dates of beginning and end of growing season in a given year stems from the fact that daily mean air temperature changes irregularly on a day-to-day basis often crossing the threshold value (i.e. 5°C) multiple times. The most frequently used method to identify dates of threshold value crossing is the mathematical or graphical method proposed by Gumiński in 1950 which based on monthly mean air temperature values. In the 1970s, Huculak and Makowiec presented a method using daily mean values of air temperature. It is assumed that both methods give comparative results although calculations of daily mean air temperature render more accurate results. This paper presents the comparison of these two methods. Air temperatures measurements from 1966–2005 taken at 38 weather stations located in various physiographic conditions in Poland were used.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125204237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Experimental and numerical investigation of non-submerged flow under a sluice gate 水闸下非淹没水流试验与数值研究
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-09-01 DOI: 10.1515/sggw-2015-0024
A. Kiczko, J. Kubrak, E. Kubrak
{"title":"Experimental and numerical investigation of non-submerged flow under a sluice gate","authors":"A. Kiczko, J. Kubrak, E. Kubrak","doi":"10.1515/sggw-2015-0024","DOIUrl":"https://doi.org/10.1515/sggw-2015-0024","url":null,"abstract":"Abstract The problem of sluice gate flow is analyzed using two models: a simplified one, derived according to the concept of the Potential Field (PF), and a more complex form, based on the Reynolds Average Navier-Stokes (RANS) equations. The numerical solution is compared with experimental data, including measurements performed by authors and results acquired from literature. Despite its simplicity, the PF model provides a satisfactory agreement with the measurements. The slightly worse performance of the RANS model comes from an overestimation of energy losses.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124072052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Application of column tests and electrical resistivity methods for leachate transport monitoring 柱试验和电阻率法在渗滤液运移监测中的应用
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-09-01 DOI: 10.1515/sggw-2015-0028
Dorota Wychowaniak, Ł. Zawadzki, M. Lech
{"title":"Application of column tests and electrical resistivity methods for leachate transport monitoring","authors":"Dorota Wychowaniak, Ł. Zawadzki, M. Lech","doi":"10.1515/sggw-2015-0028","DOIUrl":"https://doi.org/10.1515/sggw-2015-0028","url":null,"abstract":"Abstract Development of the human civilization leads to the pollution of environment. One of the contamination which are a real threat to soil and groundwater are leachates from landfills. In this paper the solute transport through soil was considered. For this purpose, the laboratory column tests of chlorides tracer and leachates transport on two soil samples have been carried out. Furthermore, the electrical resistivity method was applied as auxiliary tool to follow the movements of solute through the soil column what allowed to compare between the results obtained with column test method and electrical resistivity measurements. Breakthrough curves obtained by conductivity and resistivity methods represents similar trends which leads to the conclusion about the suitability of electrical resistivity methods for contamination transport monitoring in soil-water systems.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127593996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Capability and limitations in laboratory determination of stiffness parameters of soils 实验室测定土壤刚度参数的能力和局限性
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-06-01 DOI: 10.1515/sggw-2015-0020
M. Lipiński, M. Wdowska
{"title":"Capability and limitations in laboratory determination of stiffness parameters of soils","authors":"M. Lipiński, M. Wdowska","doi":"10.1515/sggw-2015-0020","DOIUrl":"https://doi.org/10.1515/sggw-2015-0020","url":null,"abstract":"Abstract The paper concerns laboratory methods for determination of soil stiffness. Major criterion for selection of analysed equipment is range of strain in which stiffness can be reliably determined. Substantially, various configurations of triaxial apparatus are referred to i.e. with standard cell and with the modified one. Additional system for internal measurement of strain is described and rational (based on test results) for use of it is presented. As to shear wave velocity measurement as a mean to obtain initial stiffness, requirements for proper measurement and interpretation was given. Finally, an approach to determine Poisson’s ratio on the basis of combined results of cyclic triaxial and resonant column tests was presented.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"56 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120863061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Geotechnical investigation and static analysis of deep excavation walls – a case study of metro station construction in Warsaw 深基坑墙的岩土工程勘察与静力分析——以华沙地铁站建设为例
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-06-01 DOI: 10.1515/sggw-2015-0022
M. Mitew-Czajewska
{"title":"Geotechnical investigation and static analysis of deep excavation walls – a case study of metro station construction in Warsaw","authors":"M. Mitew-Czajewska","doi":"10.1515/sggw-2015-0022","DOIUrl":"https://doi.org/10.1515/sggw-2015-0022","url":null,"abstract":"Abstract The paper presents detailed analysis of the case – a construction of deep excavation of metro station in Warsaw. Basing on this example, the great impact of the accuracy of the geotechnical investigation on the static analysis of diaphragm walls is discussed. Geotechnical studies for the construction of the central section of the second metro line were carried out in stages. Basic geotechnical soil investigation took place in the first stage of investment process, e.g. building permit and tender design stages in 2003–2004, 2007 and 2010. In subsequent years, complementary soil investigations have been performed by the contractor, and the results occurred to differ significantly. In the first part of the paper detailed description of the case is introduced. The geological conditions in the area of the station and the interpretation of the results of the three successive stages of geotechnical investigation are presented. As a result, two locations were selected with a great diversity of the soil profile depending on the stage of investigation. For each location, detailed, multiple static analysis of diaphragm walls were performed, taking into account changes in the soil profile. In the paper, one selected location is described in detail. The discussion of calculation results for this location in relation to the changing geotechnical data is presented and final conclusions are provided.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"116 24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113934978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
A simplified algorithm for the design of piled raft foundations applied for the case study of a building erected within Żoliborz-Szczęśliwice glacial tunnel valley 以Żoliborz-Szczęśliwice冰川隧道谷内建筑为例，提出了一种简化的桩筏基础设计算法
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-06-01 DOI: 10.1515/sggw-2015-0018
Grzegorz Kacprzak, K. Mazurek, T. Daktera
{"title":"A simplified algorithm for the design of piled raft foundations applied for the case study of a building erected within Żoliborz-Szczęśliwice glacial tunnel valley","authors":"Grzegorz Kacprzak, K. Mazurek, T. Daktera","doi":"10.1515/sggw-2015-0018","DOIUrl":"https://doi.org/10.1515/sggw-2015-0018","url":null,"abstract":"Abstract A common engineering solution for excessive settlement with raft foundation (s) is the use of piles in order to reduce the vertical displacements, in this method, the whole structural load is transferred to the piles. This is an overly cautious approach, and there remains a need to find an optimal design method for a building’s foundations. Such a solution may be the piled raft foundation, which allows a reduction of the number of piles due to the integration of the raft in the bearing capacity of the foundation. The aim of the article is to estimate the contribution of foundation elements such as the raft and the piles in the bearing capacity of a residential building located in Warsaw, where the geological conditions are characterized by organic soil layers, principally of gyttja.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127124635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stabilization of bottom sediments from Rzeszowski Reservoir Rzeszowski水库底部沉积物的稳定
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-06-01 DOI: 10.1515/sggw-2015-0019
K. Koś, E. Zawisza
{"title":"Stabilization of bottom sediments from Rzeszowski Reservoir","authors":"K. Koś, E. Zawisza","doi":"10.1515/sggw-2015-0019","DOIUrl":"https://doi.org/10.1515/sggw-2015-0019","url":null,"abstract":"Abstract The paper presents results of stabilization of bottom sediments from Rzeszowski Reservoir. Based on the geotechnical characteristics of the tested sediments it was stated they do not fulfill all the criteria set for soils in earth embankments. Therefore, an attempt to improve their parameters was made by using two additives – cement and lime. An unconfined compressive strength, shear strength, bearing ratio and pH reaction were determined on samples after different time of curing. Based on the carried out tests it was stated that the obtained values of unconfined compressive strength of sediments stabilized with cement were relatively low and they did not fulfill the requirements set by the Polish standard, which concerns materials in road engineering. In case of lime stabilization it was stated that the tested sediments with 6% addition of the additive can be used for the bottom layers of the improved road base.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123909987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The influence of curing time on the shear strength of fluidized fly ash 固化时间对流化粉煤灰抗剪强度的影响
Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-06-01 DOI: 10.1515/sggw-2015-0017
A. Gruchot
{"title":"The influence of curing time on the shear strength of fluidized fly ash","authors":"A. Gruchot","doi":"10.1515/sggw-2015-0017","DOIUrl":"https://doi.org/10.1515/sggw-2015-0017","url":null,"abstract":"Abstract The paper presents results of research on the influence of compaction and air and water curing on angle of internal friction and cohesion of fluidized fly ash from “Połaniec” Power Plant. It was stated that the increase in compaction resulted in an insignificant increase of the angle of internal friction and a quite significant increase of cohesion. While the type and time of curing had a great influence on the angle of internal friction and cohesion. The highest values of angle of internal friction were obtained in the air curing, and the lowest in the water curing whereas in case of cohesion there was an inverse relation. The rise of curing time resulted in largely increased cohesion and small changes of angle of internal friction.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125876014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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