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Experimental study on shear mechanical properties of cement mortar specimen with through-step joints under direct shear 直剪贯通缝水泥砂浆试件抗剪力学性能试验研究
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.143025
{"title":"Experimental study on shear mechanical properties of cement mortar specimen with through-step joints under direct shear","authors":"","doi":"10.24425/ace.2022.143025","DOIUrl":"https://doi.org/10.24425/ace.2022.143025","url":null,"abstract":": In this study, direct shear tests were carried out on cement mortar specimens with single-ladder, single-rectangular, and double-rectangular step joints. Consequently, the shear strength, and crack shape of specimens with these through-step joints were analyzed, for understanding the influence ofthethrough-stepjoint’sshapeonthedirectshearmechanicalproperties.Theresultsoftheinvestigation areasfollows:(1)Underthesamenormalstress,anyincreasesintheheight ℎ of the step joint causes an initial-increase-decrease in the shear strengths of specimens with single-ladder and double-rectangular step joints, causing a type-W variation pattern for the specimens with single-rectangular step joint. More essentially, when normal stress and ℎ are constant, the shear strength of specimens with a single-ladder step joint is the greatest, followed by specimens with a double-rectangular step joint, and then specimens with a single-rectangular step joint is the least. (2) Furthermore, given a small ℎ and low normal stress, specimen with a single-ladder step joint mainly experiences shear failure, whereas specimens with single-rectangular and double-rectangular step joints mainly generate extrusion milling in the step joints.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"506 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135637400","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
The Effect of Limit Values of Siliceous Fly Ash Content on the Durability of Concrete Structures in Rela tion to Exposure Classes 硅质粉煤灰掺量限值对不同暴露等级混凝土结构耐久性的影响
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.136463
{"title":"The Effect of Limit Values of Siliceous Fly Ash Content on the Durability of Concrete Structures in Rela tion to Exposure Classes","authors":"","doi":"10.24425/ace.2021.136463","DOIUrl":"https://doi.org/10.24425/ace.2021.136463","url":null,"abstract":"The paper concerns the use of limit value of siliceous fly ash content in concrete structures, with the application of various types of cements based on the current standards and taking into consideration the requirements concerning current exposure classes. The conclusions were based on a review of literature, the results of scientific research, conclusions from expert opinions and buildings and structures supervision reports. In summary, it has been concluded that the use of limit content of siliceous fly ashes may result in negative changes in the properties of composites, which should be ruled out or confirmed by appropriate tests, taking into account the precisely defined composition of concrete, cement and the applied additives and admixtures. It has been emphasised that the problem concerns composites with the increased and limit values of fly ash content, especially as regards cements with the lowered content of clinker and high content of additives and admixtures (affecting the physical and mechanical properties of cement composites). Attention has been drawn to the need to modify the exposure classes, to focus on the requirements concerning the properties of concrete and not the composition in order to achieve the expected durability.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135679841","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
Numerical and theoretical research on spatial shear lag effect of self-anchored suspension bridge steel box girder 自锚式悬索桥钢箱梁空间剪力滞效应的数值与理论研究
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.137189
{"title":"Numerical and theoretical research on spatial shear lag effect of self-anchored suspension bridge steel box girder","authors":"","doi":"10.24425/ace.2021.137189","DOIUrl":"https://doi.org/10.24425/ace.2021.137189","url":null,"abstract":"The shear lag effect of the steel box girder section in a self-anchored suspension bridge was investigated in this study. Finite element analysis software Midas Civil was used to discretize the girder under analysis into space plate elements and establish a plate element model. The law of shear lag in the longitudinal direction of the girder in the construction and completion stages was determined accordingly. The shear lag coefficient appears to change suddenly near the side support, middle support, side cable anchorage area, and near the bridge tower support of the steel box girder under the imposed load. The most severe shear lag effect is located near the side support and near the side cable anchorage area. Steel box girder sections are simulated before and after system conversion to analyze the shear lag coefficient in the bridge construction stage. The results show that the shear lag coefficient markedly differs before versus after system conversion due to the different stress mechanisms. The finite element analysis results were validated by comparison with the results of an analysis via analogous rod method.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"1 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135679853","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
Semi-analytical modelling of multilayer continuous systems nonlinear dynamics 多层连续系统非线性动力学的半解析建模
IF 0.7
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ACE.2020.131803
P. Kozioł, R. Pilecki
{"title":"Semi-analytical modelling of multilayer continuous systems nonlinear dynamics","authors":"P. Kozioł, R. Pilecki","doi":"10.24425/ACE.2020.131803","DOIUrl":"https://doi.org/10.24425/ACE.2020.131803","url":null,"abstract":"Problems concerning structures dynamics are being one of most important subjects in recent investigations associated with railways constructions. The need of modelling of such structures and their behaviour prediction leads to necessity of seeking new approaches, mainly due to highly increasing speeds of vehicles and traffic intensity. Comparative studies carried out on experimental data, measurements and theoretical research show that models based on multi-layered approach supported by semi-analytical approximations of solutions can give new insight into undertaken analyses. More detailed consideration of roads components and their physical properties, along with application of effective estimations allowing to avoid numerical instabilities linked with extremal dynamic variations, can be important tools in obtaining new solutions both, theoretical and engineering. This paper briefly presents a number of multilayer railway track models, with special emphasis on nonlinear track properties. Existing analytical and semi-analytical solution methods are presented with main advantages of new approaches. The theoretical double-beam system with two nonlinear layers is solved and computational examples are presented along with possibility of their transition to other multilayer structures analysis.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"66 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68943514","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 relationship between the mechanical properties of aggregates and their geometric parameters on the example of Polish Carpathian sandstones 以波兰喀尔巴阡砂岩为例，研究集料力学性能与几何参数的关系
IF 0.7
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ACE.2020.134393
J. Hydzik-Wiśniewska
{"title":"The relationship between the mechanical properties of aggregates and their geometric parameters on the example of Polish Carpathian sandstones","authors":"J. Hydzik-Wiśniewska","doi":"10.24425/ACE.2020.134393","DOIUrl":"https://doi.org/10.24425/ACE.2020.134393","url":null,"abstract":"","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"66 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68944125","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: 3
Asphalt concrete produced from rejuvenated reclaimed asphalt pavement (RAP) 再生再生沥青路面生产沥青混凝土(RAP)
IF 0.7
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ACE.2020.131812
W. Sorociak, B. Grzesik, J. Bzówka, P. Mieczkowski
{"title":"Asphalt concrete produced from rejuvenated reclaimed asphalt pavement (RAP)","authors":"W. Sorociak, B. Grzesik, J. Bzówka, P. Mieczkowski","doi":"10.24425/ACE.2020.131812","DOIUrl":"https://doi.org/10.24425/ACE.2020.131812","url":null,"abstract":"The problem of recycled materials application in road construction is one of the key issues in contemporary road engineering. This article describes attempts to produce a hot mix asphalt (HMA) mixture entirely from processed reclaimed asphalt pavement (RAP) material. Due to the binder ageing process, rejuvenating agent was a necessary additive to the mixture. The mixture was tested to determine its parameters, including the content of voids, fatigue life, rutting resistance, stiffness and water sensitivity. The test results demonstrated that the rejuvenated RAP mixture is not inferior to fresh produced mixtures in terms of physical and strength parameters. Such results are, however, conditional on appropriate handling of the RAP material.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"66 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68944018","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
Analytical Models Tracing Deformation of Wood-Framed Walls During Vertical Transport 木结构墙体在垂直运输过程中的变形分析模型
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.136465
Jarosław Malesza, Czesław Miedziałowski
{"title":"Analytical Models Tracing Deformation of Wood-Framed Walls During Vertical Transport","authors":"Jarosław Malesza, Czesław Miedziałowski","doi":"10.24425/ace.2021.136465","DOIUrl":"https://doi.org/10.24425/ace.2021.136465","url":null,"abstract":"Vertical transport of wall-panels is a part of the prefabrication process of wood-framed buildings. The total dead weight of a wall is suspended on several lifting slings, pointwise clasping the top plate of the wall. This indicates, that all the weight of a wall is cumulated in sheathing-to-framing fasteners, usually staples. This article presents experimental investigations and analytical models evaluated for the description of light wood-framed walls in the process of lifting. Three different models cover the analytical approach: a model of a simple beam on elastic supports (BSS), a model of assembled beams (ACBS), three-dimensional (3D) spatial FE model of the wall (WFEM). Board-to-beam joint material parameters are determined on the base of experimental results. These connections are converted into two variants in the form of spring elements for 2D analysis, and beam elements for 3D analysis. The numerical results exhibit that the proposed models may correctly represent behavior of a real wall in lifting, applying elastic materials parameters.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"14 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135545597","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
Reduction of Perpendicular to Grain Stress in Double-Tapered Glulam Beams with the Transverse Reinforcement 横向配筋降低双锥形胶合木梁的垂直应力
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2020.131809
A. Al Sabouni-Zawadzka, W. Gilewski, J. Pełczyński
{"title":"Reduction of Perpendicular to Grain Stress in Double-Tapered Glulam Beams with the Transverse Reinforcement","authors":"A. Al Sabouni-Zawadzka, W. Gilewski, J. Pełczyński","doi":"10.24425/ace.2020.131809","DOIUrl":"https://doi.org/10.24425/ace.2020.131809","url":null,"abstract":"In the present paper tensile stresses perpendicular to the grain in reinforced double-tapered beams made of glued laminated timber are discussed. The beams are analysed using the finite element method within the linear elasticity theory with the influence of orthotropic material properties. The main objective is to assess the influence of transverse reinforcement on the values and distributions of the analysed stresses and to identify the most efficient scheme of reinforcement. The obtained results prove that, with the use of the proposed tools, it is possible to assess the level of stress, including delaminating stress, and to indicate the areas of occurrence of such stress with high precision.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"23 70","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135545874","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
Experimental investigation of sandwich panels supported by thin-walled beams under various load arrangements and number of connectors 薄壁梁夹芯板在不同荷载布置和连接数下的试验研究
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.143045
{"title":"Experimental investigation of sandwich panels supported by thin-walled beams under various load arrangements and number of connectors","authors":"","doi":"10.24425/ace.2022.143045","DOIUrl":"https://doi.org/10.24425/ace.2022.143045","url":null,"abstract":": Inthepapertherethelaboratorytestsofinteractionbetweenthin-walledbeamsofthe 𝑍 cross-section and the sandwich panels with PIR foam core are presented. The different numbers of connectors (0, 4, and 8) were used to connect the sandwich panels with the thin-walled beams. Furthermore, the parallel and perpendicular to the longitudinal axis of the thin-walled beam load arrangement was analysed. The research provides a qualitative and quantitative comparison of the mentioned experiments using the ultimate capacity, the deformation capacity, and the stiffness. In the second part of the paper, the numerical analysis of the thin-walled beam was also performed. The beam was modelled as a shell element and loaded in two ways, which corresponded to the loading scenario during laboratory tests (uniformly distributed and concentrated loads). The results of the numerical calculations of the beam without lateral stabilization were compared with the laboratory results of the beam stabilized by the sandwich panels.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"11 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634477","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
Modelling the impact of electronic auction on the tender procedure for the construction of railway infrastructure with the Bayesian networks 利用贝叶斯网络模拟电子拍卖对铁路基建招标程序的影响
Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.143058
{"title":"Modelling the impact of electronic auction on the tender procedure for the construction of railway infrastructure with the Bayesian networks","authors":"","doi":"10.24425/ace.2022.143058","DOIUrl":"https://doi.org/10.24425/ace.2022.143058","url":null,"abstract":": The numerous overruns of the investor’s budget during tenders for the construction of railway infrastructure in Poland resulted in the widespread use of a new procedure for awarding public contracts –electronicauction.Thisprocedurehasmanyadvantagesandpotentialrisks.Oneofthebiggestbenefitsforaninvestoristhepotentialgainsfromreducingbids.Contractorscompetingagainsteachotherallow fortheachievementofoptimalpricesfortheplannedconstructioninvestment.However,thismaycausetheoriginallycalculatedrisks,shouldtheymaterialize,leadtosignificantbudgetoverruns.This,inturn, mayimplyfurthernegativeconsequences,includingexceedingtheassumedinvestmentdeadlines.Thearticlepresentsamethodofmodelingtheinfluenceofanelectronicauctiononatenderprocedurewith theuseofaBayesiannetwork.DatafromcompletedtenderproceduresannouncedbythePKPPolskieLinieKolejoweS.A.wereusedtobuildthenetwork.Thecreatednetworkwasthenvalidated,verified andcalibratedusingnewdatafrom8tenderprocedures.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":"10 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634492","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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