المؤلفون: Lucija Stepinac, Josip Galić, Hrvoje Vukić, Miljenko Haiman

المصدر: Građevinar, Vol 73, Iss 05., Pp 509-522 (2021)

مصطلحات موضوعية: fire, reinforced-concrete structures, test methods, condition assessment, Engineering (General). Civil engineering (General), TA1-2040

الوصف: Procedures for estimating damage and remaining bearing capacity of RC structures after fire are presented in the paper. The damage to structural RC elements of a column, beam, slab, wall, and connection details, is presented in the paper. Although RC elements are generally considered to be fire resistant, their physical and mechanical characteristics are greatly influenced by temperature, while the bearing capacity before and after fire can be determined through a number of different methods that are presented in the paper. An overview of condition assessment for RC structures after fire is proposed, and methodology for taking further action is presented.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/0350-2465Test; https://doaj.org/toc/1333-9095Test

الوصول الحر: https://doaj.org/article/99f5e9516b324da5840a34da1ac695ebTest

المؤلفون: Miljenko Haiman

المصدر: Prostor, Vol 27, Iss 1(57), Pp 132-139 (2019)

مصطلحات موضوعية: drveni lamelirani nosači, gredni nosači, numerički proračun, optimalno oblikovanje, vlačno naprezanje okomito na vlakanca, Architecture, NA1-9428, Building construction, TH1-9745

الوصف: U radu se analizira šest različitih primjera lameliranih grednih drvenih nosača kojima su dimenzije određene za najveća ista opterećenja na rasponu od 24 m. Cilj analiza bio je određivanje složenog polja naprezanja koja se javljaju u grednim drvenim lijepljenim lameliranim nosačima u ovisnosti o obliku. Oblik bitno utječe na stanje naprezanja u nosačima te stoga ove analize ukazuju na činjenicu njihova povoljnog oblikovanja. Drugi je cilj istraživanja bio sa što manje materijala svladati određeni raspon i tako izvesti jeftiniju konstrukciju.

وصف الملف: electronic resource

العلاقة: https://hrcak.srce.hr/file/323584Test; https://doaj.org/toc/1330-0652Test; https://doaj.org/toc/1333-9117Test

الوصول الحر: https://doaj.org/article/5b11428f397a4e15a1d31df5dbef5551Test

المؤلفون: Krunoslav Pavković, Miljenko Haiman, Mladen Meštrović, Vlatka Rajčić

المصدر: Građevinar, Vol 65, Iss 10., Pp 869-878 (2013)

مصطلحات موضوعية: Engineering (General). Civil engineering (General), TA1-2040

الوصف: A joint with a large diameter fastener for connecting large span truss girder nodes is presented in the paper. The joint strength and slip modulus were analysed by means of experimental testing and the finite element method. The experimental testing was conducted on four truss girders with the proposed joint. The nonlinear truss girder model analysis, was conducted using the Abaqus/CAE software with the UMAT subroutine. The results obtained and analysed according to EN 21512, show that the proposed joint has a large strength and slip modulus, and that it can be used for large-span truss girders. The results also show that the equation for embedding compression strength according to EC5 should be modified.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/0350-2465Test; https://doaj.org/toc/1333-9095Test

الوصول الحر: https://doaj.org/article/678a2195e93244c180fb87ae53c0c67eTest

المؤلفون: Lucija Stepinac, Josip Galić, Hrvoje Vukić, Miljenko Haiman

مصطلحات موضوعية: požar, armirano betonske konstrukcije, metode ispitivanja, procjena stanja

الوصف: Procedures for estimating damage and remaining bearing capacity of RC structures after fire are presented in the paper. The paper describes the effect of fire on structures, the danger it poses for the loss of human lives, and financial losses it may generate. The damage to structural RC elements of a column, beam, slab, wall, and connection details, is presented in the paper. Although RC elements are generally considered to be fire resistant, their physical and mechanical characteristics are greatly influenced by temperature, while the bearing capacity before and after fire can be determined through a number of different methods that are presented in the paper. An overview of condition assessment for RC structures after fire is proposed, and methodology for taking further action is presented.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=57a035e5b1ae::565580322f0dc0b89d6865286571418eTest
https://www.bib.irb.hr/1140669Test

المؤلفون: Miljenko Haiman

المصدر: Prostor : znanstveni časopis za arhitekturu i urbanizam ; ISSN 1330-0652 (Print) ; ISSN 1333-9117 (Online) ; Volume 27 ; Issue 1(57)

مصطلحات موضوعية: drveni lamelirani nosači, gredni nosači, numerički proračun, optimalno oblikovanje, vlačno naprezanje okomito na vlakanca, glulam timber girders, beam girders, numerical analysis, optimal design, tensile stress perpendicular to the fibres, archi, relig

الوصف: This paper presents the analyses of 6 different models of glulam (glued laminated) timber girders whose dimensions are determined for the same maximal stresses on a 24-metre span. The goal is to determine a complex area of stresses that occur in the timber girders depending on their form. The form considerably affects the stresses in the girders. The analyses therefore highlight the importance of an appropriate design. Another goal of this research is to minimize the quantity of the materials needed to control a particular span resulting in a cheaper structure. ; U radu se analizira šest različitih primjera lameliranih grednih drvenih nosača kojima su dimenzije određene za najveća ista opterećenja na rasponu od 24 m. Cilj analiza bio je određivanje složenog polja naprezanja koja se javljaju u grednim drvenim lijepljenim lameliranim nosačima u ovisnosti o obliku. Oblik bitno utječe na stanje naprezanja u nosačima te stoga ove analize ukazuju na činjenicu njihova povoljnog oblikovanja. Drugi je cilj istraživanja bio sa što manje materijala svladati određeni raspon i tako izvesti jeftiniju konstrukciju.

العلاقة: https://hrcak.srce.hr/221659Test

الإتاحة: https://hrcak.srce.hr/221659Test

المؤلفون: Miljenko Haiman

المصدر: Prostor : znanstveni časopis za arhitekturu i urbanizam
Volume 27
Issue 2(58)

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=od_______951::8b9cbee4a20f75b17ead1c1e9386974eTest
https://hrcak.srce.hr/231005Test

المؤلفون: Miljenko Haiman

المصدر: Prostor : znanstveni časopis za arhitekturu i urbanizam ; ISSN 1330-0652 (Print) ; ISSN 1333-9117 (Online) ; Volume 26 ; Issue 2(56)

مصطلحات موضوعية: hisphilso, hist

العلاقة: https://hrcak.srce.hr/213774Test

الإتاحة: https://hrcak.srce.hr/213774Test

المؤلفون: Nenad Turčić, Miljenko Haiman

المصدر: Materials Science Forum. :486-491

مصطلحات موضوعية: Engineering, Aggregate (composite), business.industry, Mechanical Engineering, Composite number, Structural engineering, Flange, Condensed Matter Physics, Mechanics of Materials, Girder, Glued laminated timber, Slab, General Materials Science, Expanded clay aggregate, business, Beam (structure)

الوصف: Nowadays, composite structures based on wood are frequently used. In civil engineering, mostly timber-concrete composite structures are used, particularly in reconstruction of old timber girder floor structures or manufacture of new ones at the reconstruction of old buildings in areas exposed to frequent earthquakes. In new buildings it is mainly glued laminated timber or lumber, while in reconstruction square timber is used. A timber beam is coupled with a concrete slab made either of conventional or a lightweight concrete. Best results are achieved by coupling timber with lightweight aggregate concrete that has all the properties similar to the timber except for its strength that is much higher and comparable to that of conventional concrete. This paper analyzes a composite timber-lightweight aggregate concrete structure. The basic girder is a T-cross section, with the web made of glulam, and flange made of lightweight concrete with expanded clay aggregate (Liapor). The two materials are coupled by means of mechanical fasteners, allowing joint action of the composite section. Quality of coupling has been determined by experimental tests carried out at the Laboratory of the Technical Mechanics Institute, Faculty of Civil Engineering in Zagreb. Finite element method was used for modelling of composite structures using ABAQUS software. The aim of this study was to determine the advantages of using timber-lightweight aggregate concrete composite structure, compared to solutions in which timber-conventional concrete composite structure or reinforced concrete slab are used.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::6a29138b042151b556c5d4554a1bea61Test
https://doi.org/10.4028/www.scientific.net/msf.730-732.486Test

المؤلفون: Vlatka Rajčić, Krunoslav Pavković, Miljenko Haiman

مصطلحات موضوعية: business.product_category, Materials science, Textile, business.industry, Glass fiber, Structural engineering, Fastener, Finite element method, Large diameter fastener, Reinforced timber, Edge distance, Load perpendicular to grain, Splitting strength, Timber joint, Three-dimensional model, Cohesive interaction, UMAT subroutine, Perpendicular, Adhesive, Composite material, business, Layer (electronics), Joint (geology), Civil and Structural Engineering

الوصف: The research deals with a 49.0 mm in diameter mechanical fastener to which load perpendicular to grain is applied. The experimental research was divided in two series: the first series was carried out with locally reinforced, and the second with non-reinforced timber specimens. The local reinforcement of timber elements with textile sheets between lamellas in a layer of adhesive was made in the production process. Furthermore, research on finite element models using Abaqus/CEA software package was carried out. UMAT subroutine and cohesive contact between surfaces were used for modelling complex timber mechanical properties and cracks opening. The research results have shown that glass fiber textile placed between lamellas in adhesive layer effectively increases the resistance and splitting capacity of timber joint. Analytical approach has been proposed for predicting the splitting capacity of the reinforced joint.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7faa3022f57521bcbe27879a9946f8f5Test
https://doi.org/10.1016/j.engstruct.2014.05.046Test

المؤلفون: Miljenko Haiman, Krunoslav Pavković

المصدر: Građevinar
Volume 62
Issue 12.

مصطلحات موضوعية: okvirna konstrukcija, nadstrešna konstrukcija, čelična konstrukcija, prečka, hibridni sustav, lamelirano drvo, frame structure, shed structure, steel structure, cross beam, hybrid system, laminated wood

الوصف: Opisan je projekt nadstrešne konstrukcije koja je prvotno bila zamišljena kao čelična konstrukcija, a potom je izmijenjena. Izmjene se odnose na zamjenu prečke okvira hibridnim sustavom i uvođenje lameliranog drva u dio konstrukcije. Prikazani su detaljni proračuni i numerički modeli izvedeni programskim podrškama STAAD i COSMOSM. Izvedena konstrukcija prema numeričkim analizama prikazanim u ovom radu daleko je povoljnija, racionalnija i elegantnija, od prvotno projektirane.
Design of a shed structure, initially conceived as a steel structure, and subsequently modified, is described. The modifications concern replacement of the frame cross beam by a hybrid system, and introduction of laminated wood into a part of the structure. Detailed analyses and numerical models derived by means of the STAAD and COSMOSM software are presented. The structure derived according to numerical analyses presented in this paper is much more favourable, rational and elegant, when compared with the initially designed structure.

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=od_______951::6760344cf0117afb6ab69c85a8037263Test
https://hrcak.srce.hr/file/94685Test