GradevinarPub Date : 2021-02-10DOI: 10.14256/jce.3039.2020
S. Lakušić
{"title":"Testing noncohesive geogrid-reinforced soil in triaxial shear apparatus under cyclic loading","authors":"S. Lakušić","doi":"10.14256/jce.3039.2020","DOIUrl":"https://doi.org/10.14256/jce.3039.2020","url":null,"abstract":"In road base layers, geogrids assume the reinforcement or stabilization function where good interaction between geogrid and unbound base material is important. The cyclic triaxial test can be used for analysing interaction between geogrid and unbound base material. The paper includes an overview of research where cyclic triaxial test is primarily used for assessing the influence of parameters such as geogrid stiffness, geometry and aperture size, position and number of geogrid layers, on the interaction with the base layer material. The cyclic triaxial test can be used to determine contribution the geogrid application in non-cohesive materials has on the reduction of permanent deformations.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66968642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GradevinarPub Date : 2021-01-01DOI: 10.14256/jce.3055.2020
Petar Mrakužić, Hrvoje Meaški
{"title":"Evaluation of remotely sensed precipitation product in a hydrological model of the Bednja watershed","authors":"Petar Mrakužić, Hrvoje Meaški","doi":"10.14256/jce.3055.2020","DOIUrl":"https://doi.org/10.14256/jce.3055.2020","url":null,"abstract":"In this paper, a statistical and spatial analysis of precipitation for the period 2000-2018 for the Bednja basin was performed, were the measured data from meteorological and/or rainfall stations of Croatian Meteorological and Hydrological Service (DHMZ) were compared with the data in form of remotely sensed precipitation product - CHIRPS (Climate Hazards Group InfraRed Precipitation with Station). The results of the analysis in the form of the annual sum, monthly distribution within the year and the spatial distribution and input data ratio over the basin show a good correlation between the measured and remotely sensed precipitation. In order to further evaluate the quality of the remotely sensed product, a SWAT hydrological runoff model was created.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66968914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GradevinarPub Date : 2021-01-01DOI: 10.14256/jce.2627.2019
I. Curkovic, Vorgefertigte Aluminiumhallen, Davor Skejić, Domagoj Orehovec
{"title":"Prefabricated aluminium halls","authors":"I. Curkovic, Vorgefertigte Aluminiumhallen, Davor Skejić, Domagoj Orehovec","doi":"10.14256/jce.2627.2019","DOIUrl":"https://doi.org/10.14256/jce.2627.2019","url":null,"abstract":"Prefabricated aluminium halls are usually temporary structures with multiple uses. Their biggest advantage is low weight resulting in lower transport costs and allowing for quick assembly. Today, there is a growing demand for aluminium halls to become permanent structures, and therefore, in meeting the requirements of EN 199x norm series, it is necessary to optimize the calculation aspect of conventional structural systems with reinforced bolted joints. An overview of the most common structural systems, typical aluminium profiles and joints with steel reinforcements, as well as a common approach for design and assembly, is presented in the paper.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66966712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GradevinarPub Date : 2021-01-01DOI: 10.14256/jce.2876.2020
Engin Gücüyen, Erkan Kantar, R. T. Erdem, M. B. Alıcıoğlu
{"title":"Experimental and Numerical Investigation of Steel Sections under Impact Effect","authors":"Engin Gücüyen, Erkan Kantar, R. T. Erdem, M. B. Alıcıoğlu","doi":"10.14256/jce.2876.2020","DOIUrl":"https://doi.org/10.14256/jce.2876.2020","url":null,"abstract":"Experimental and numerical behaviour of steel test specimens with various types of joints is investigated in this study. A drop weight test setup with necessary test equipment is used for this purpose. The mass and drop height of the hammer is taken to be constant so that the same impact energy can be applied on test specimens. The acceleration, displacement, impact load, drop numbers and drop durations, are obtained through experimental study. In addition, development of damage to test specimens is observed during tests. Numerical analyses of behaviour of test specimens under impact load are also conducted to verify test results using the Abaqus software, and a comparison of results is made.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66967815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GradevinarPub Date : 2020-12-01DOI: 10.14256/jce.2848.2019
Ümit Gökkuş
{"title":"Comparative analysis of tripod offshore structure","authors":"Ümit Gökkuş","doi":"10.14256/jce.2848.2019","DOIUrl":"https://doi.org/10.14256/jce.2848.2019","url":null,"abstract":"Marine structures are nowadays used in a variety of ways. The analysis of a tripod-type offshore structure sixty m in total height is performed in this study. In addition to operation-related loads, the structure is also under the effect of wind and wave loads. While the Eurocode velocity profile is used to calculate wind forces, the Airy wave velocity profile is utilized to determine wave forces. The model is created by a finite elements analysis program, and is composed of fluid and structural parts. The interaction of the parts is ensured by Coupled Eulerian Lagrangian (CEL) technique.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66967675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GradevinarPub Date : 2020-12-01DOI: 10.14256/jce.2892.2020
Kerem Şerifaki, Elif Uğurlu Sağın, H. Böke
{"title":"Microstructural characteristics of mortars prepared by hot lime mix","authors":"Kerem Şerifaki, Elif Uğurlu Sağın, H. Böke","doi":"10.14256/jce.2892.2020","DOIUrl":"https://doi.org/10.14256/jce.2892.2020","url":null,"abstract":"The effect of lime characteristics and hot lime mix method on hydraulic, microstructural and mechanical properties of mortars is determined by producing mortars from quicklimes of two different marbles and two limestones. Results of SEM-EDS, XRD and TGA analyses reveal that the porous microstructure of mortars and spongy texture of calcite crystals are the indicators of the hot lime mix method. This study shows that characteristics of limestones used for the production of limes, as well as the preparation method, directly affect hydraulic, mechanical and microstructural properties of mortars.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66967961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GradevinarPub Date : 2020-12-01DOI: 10.14256/jce.2784.2019
Emir Maslak, D. Stojić, D. Drenić, E. Mešić, R. Cvetković
{"title":"Strengthening timber-concrete composite girders with prestressed reinforcement","authors":"Emir Maslak, D. Stojić, D. Drenić, E. Mešić, R. Cvetković","doi":"10.14256/jce.2784.2019","DOIUrl":"https://doi.org/10.14256/jce.2784.2019","url":null,"abstract":"Timber-concrete composite girders are a modern type of structure. They are formed by composite connection of a timber and concrete girder. They are designed in such a way that the concrete part of the girder is placed in the compression zone and the timber part of the girder in the tension zone. Various types of shear connectors are used for establishing this connection: from mechanical ones (bolts, nails, perforated plates, parts of steel sections, etc.) to chemical ones (various types of glue). The possibility of active strengthening of such girders with prestressed reinforcement is investigated in this paper. One possibility of applying external prestressing force is presented. Some strengthened-girder test results are presented and compared with results for similar girders but without strengthening.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66967570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GradevinarPub Date : 2020-12-01DOI: 10.3929/ETHZ-B-000467401
P. Blagojević, N. Blagojević, D. Kukaras, D. Živković, Aleksandar Šutanovac
{"title":"Mechanical flexural properties of concrete with melt-extract stainless steel fibres","authors":"P. Blagojević, N. Blagojević, D. Kukaras, D. Živković, Aleksandar Šutanovac","doi":"10.3929/ETHZ-B-000467401","DOIUrl":"https://doi.org/10.3929/ETHZ-B-000467401","url":null,"abstract":"An experimental study is performed to evaluate the effect of melt-extract stainless steel fibres on mechanical and flexural properties of concrete. A total of seventy-two specimens are used to determine an optimum fibre dosage and mechanical properties of plain and steel fibre reinforced concrete. Twelve full-scale beam specimens are then exposed to four-point bending tests. The effect of melt-extract stainless steel fibres on flexural behaviour of beams is quantified in this testing. A beam specimen is exposed to four-point bending, after being subjected to 15000 cycles of fatigue load. Pre- and post-fatigue flexural properties of beams with melt-extract steel fibres are compared and discussed.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70175333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GradevinarPub Date : 2020-12-01DOI: 10.14256/jce.2427.2018
S. Lakušić
{"title":"Making the asphalt paving process explicit - A fundamental step for quality improvement","authors":"S. Lakušić","doi":"10.14256/jce.2427.2018","DOIUrl":"https://doi.org/10.14256/jce.2427.2018","url":null,"abstract":"The objective of the paper is to make explicit the paving operations, the related asphalt temperature and density data, and the logistic process, as a fundamental step to identify improvement opportunities. For that, temperature data, roller compactor trajectories, asphalt density, paver speed, and trucks logistics, were collected. The results, analysis, and feedback received, point to specific opportunities for improvement, including avoiding the paver start-stop cycles, uniform compaction of the entire pavement surface, and definition of roller compaction strategy.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66966426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GradevinarPub Date : 2020-10-19DOI: 10.14256/jce.2755.2019
I. Rouaz, N. Bourahla, Smail Kechidi
{"title":"Effect of openings on cold formed steel shear wall panels","authors":"I. Rouaz, N. Bourahla, Smail Kechidi","doi":"10.14256/jce.2755.2019","DOIUrl":"https://doi.org/10.14256/jce.2755.2019","url":null,"abstract":"In this paper, the effect of openings on global performance of Cold Formed Steel Shear Wall Panels is investigated numerically using the ABAQUS software. A benchmark model is first validated in terms of lateral shear capacity and nonlinear behaviour of the CFS-SWP. The failure mode of the CFS-SWP with opening is identified and validated. Subsequently, a parametric study on the effect of size and position of openings is conducted, in which the opening position is found to have a significant impact on the CFS-SWP performance. The benchmark model can be used for design purposes to evaluate with good accuracy the reduced ultimate strength of individual CFS-SWPs for any size and position of openings.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47476034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}