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  1. 8 Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture
  2. 8 Izolacje
  3. 7 Builder
  4. 7 Civil and Environmental Engineering Reports
  5. 7 Nowoczesne Hale
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  1. 3 2024
  2. 3 2023
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  4. 5 2021
  5. 2 2020
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  1. 8 Urbańska-Galewska E.
  2. 5 Wierzbicki S.
  3. 4 Gordziej-Zagórowska M.
  4. 4 Łukowicz A.
  5. 3 Adamski R.
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1
Content available Thin-walled cross section shape influence on steel member resistance
100%
Urbańska-Galewska E. , Deniziak P. , Gordziej-Zagórowska M. , Łukowicz A.
Advances in Science and Technology. Research Journal
|
2016
|
tom Vol. 10, nr 29
41--45
EN
This work describes why trending thin-walled technology is achieving popularity in steel construction sector. A purpose of this article is to present the influence of the cold-formed element cross-section shape on an axial compression and a bending moment resistance. The authors have considered four different shapes assuming constant section area and thickness. Calculations were based on three different steel grades taking into account local, distortional and overall buckling. The results are presented in a tabular and a graphical way and clearly confirm that cross-section forming distinctly impact the cold-formed member resistance. The authors choose these cross-sections that work better in compression state and the other (those slender and high) that function more efficiently are subjected to bending.
2
Content available Investigating durability time interval of three-dimensional steel frame with angle connections under elevated temprature
100%
Rad H. , Yahyayi M.
Advances in Science and Technology. Research Journal
|
2016
|
tom Vol. 10, nr 29
28--40
EN
During recent years, much attention has been paid to the analysis of fire effect on steel structures because of fire importance and its effect on the stability of steel structures. Considering steel sensitivity to heat and high costs of steel frames retrofitting with the help of thermal covers, accurate behavior analysis of metal frames in elevated tem-peratures is required in order to reduce undesirable effects of temperature increase. To do so and taking into account the high costs of lab tests and their limitations in investigation of numerous parameters during any test, finite element method is used as a powerful and valuable tool in modeling of steel frames under thermal conditions. In this study, the fire effect on steel beams is studied considering the softening of connec-tion and decrease of materials strength. Then, structure durability in fire will be ana-lyzed in the ANSYS software. The analyzed frame is a single span three dimensional one and different conditions including connection type, longitudinal expansion effect, thermal loading and the kind of fire will be analyzed and compared. The obtained computer results will be compared with other researches results.
3
Content available Technological Aspects of Execution of Welded Joints in Hollow Sections
100%
Kuchta K. , Silezin R. , Żwirek P.
Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture
|
2018
|
tom z. 65, nr 2
35--42
EN
Steel structures designed according to Eurocode 3 are executed in accordance with the provisions of the standard PN-EN 1090-2, which is referred to in Eurocode 3. In addition, the standard PN-EN 1090-2 refers to in its content a number of welding standards, e.g. PN-EN ISO 9692-1. These standards provide guidelines for welded connections, which should be applied in the case of joints connecting steel hollow sections. Analysis of above-mentioned provisions revealed that for fillet welds they are simultaneously fulfilled only if the inclination angles of the elements are in the range of 70°-100°. According to recommendations of PN-EN 1993-1-8 and EN 1090-2, the same weld type around the perimeter of the element connected to the chord of lattice structure is possible to execute only for inclination angle lower than 60°. Discrepancies between these standards also exist with regard to the interpretation of the dimension of the flare groove welds in connections of rectangular hollow sections with the same width. In addition, analyses of the recommendations for welding in cold-formed zones indicate that, for steel grades currently used for the production of cold-formed rectangular hollow sections, welding in these zones is not permitted only for profiles with wall thickness equal to 12.5 and 16 mm. The above-mentioned issues point out the need for mutual unification of standards for the design and execution of steel joints in hollow sections.
4
Content available Classification of restraints in the optimization problem of a cold-formed profile
100%
Łukowicz A. , Urbańska-Galewska E. , Deniziak P. , Gordziej-Zagórowska M.
Advances in Science and Technology. Research Journal
|
2015
|
tom Vol. 9, nr 28
61--67
EN
This work describes the restraints in the optimization problem. This is an important and complicated issue because it requires taking into account a vast range of information related to the design and production. In order to describe the relations of a specific optimization problem, it is essential to adopt appropriate criteria and to collect information on all kinds of restraints, i.e. boundary conditions. The following paper verifies the various restraints and defines three subsets: design assumptions, technological limitations and standard conditions. The provided classification was made with reference to the analysis of the construction applicability of the newly patented cold-formed profile.
5
Content available remote Influence of sulphur on high temperature degradation of steel structures in the refinery industry
100%
Hucińska J.
Advances in Materials Science
|
2006
|
tom Vol. 6, nr 1
16-25
EN
This paper reviews sulphidation behaviour of steel structures in the refinery industry. The data presented are related to two aspects of the corrosion. One aspect refers to external degradation of the structures due to formation of sulphide scales on the steel surface and metal losses; another is connected with internal degradation, i.e. changes of steel microstructure and formation of internal corrosion products. The so-called modified McConomy curves, and the Couper-Gorman curves used to predict corrosion rates of steels in hydrogen-free refinery streams, and hydrogen-containing environments are shown. Decreased stability of carbides in steel due to the presence of sulphur on the steel surface is considered, and a role of hydrogen in this process is outlined.
6
Content available Local vertical compressive stress in the crane runway beam web
100%
Polus Ł. , Chybiński M. , Kurzawa Z.
Budownictwo i Architektura
|
2022
|
tom Vol. 21, no 4
51--66
EN
In this paper, the authors analysed several variants of connections between a block rail (60 mm × 60 mm) and a crane runway beam (IKS 800-6). They compared local vertical compressive stress in the crane runway beam web, calculated using an analytical approach and numerical simulations. In the case of the continuous block rail rigidly fixed to the beam flange, satisfactory convergence was obtained. For the remaining types of connections the results based on the analytical method were different from the results of the numerical simulations. The difference resulted from the fact that the analytical method did not take into account the crane rail joint. Furthermore, the impact of the elastomeric bearing pad on the local stress value was taken into account in a simplified manner in the analytical method by increasing the effective length by approximately 30%. The local vertical compressive stress in the crane runway beam web was significantly affected by the connection between the rail and the crane runway beam, the crane rail joint type, the use of the elastomeric bearing pad, the length of the elastomeric bearing pad, and the crane rail wear.
7
Content available Energoaktywne segmenty dylatacyjne hal z przekryciem strukturalnym
100%
Kowal Z. , Piotrowski R.
Budownictwo i Architektura
|
2013
|
tom Vol. 12, nr 2
221--228
PL
W pracy pokazano wyniki opracowania ekonomicznej koncepcji energoaktywnych segmentów dylatacyjnych wielkopowierzchniowych hal, w których: 1) zastosowano przekrycia strukturalne, 2) zmniejszono wpływy termiczne na siły i przemieszczenia do konwencjonalnych wielkości normowych [1], 3) zachowano nośność i niezawodność powyżej zalecanej w klasie RC2 [2], 4) dobrano schemat statyczny hali tak, aby awaryjne wpływy termiczne nie wpływały na niezawodność segmentów dylatacyjnych hali. Ten efekt uzyskano przez rozdzielenie belkowych i przechyłowych kinematycznie dopuszczalnych mechanizmów zniszczenia wydzielonych energoaktywnych segmentów dylatacyjnych hali.
EN
The paper presents the results of developing a concept of economical energy-active expansion segments for large-volume halls, in which: 1) structural coverings were used, 2) thermal impacts on forces and displacements were reduced to conventional values stated in the code [1], 3) load bearing capacity and reliability, greater than those recommended for RC2 class structures, were maintained [2], 4) the static scheme was selected in such a way so that failure-causing thermal impacts would not affect the reliability of the hall expansion segments. The effect was obtained by detaching the beam kinematically admissible failure mechanism from the tilt kinematically admissible failure mechanism of separate energy-active expansion segments of the hall.
8
Content available Resistance of Steel Fasteners Subjected to Shear at Public Arenas in Normal and Fire Temperatures - Probabilistic Approach
100%
Domański T.
Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture
|
2018
|
tom z. 65, nr 2
17--24
EN
The buildings with great grandstands are the public places where consequences of failure are very high. For this reason, according to EN 1990 they belong to CC3 class consequence of failure. The reliability class RC3 is associated with the consequences class CC3 [7, 8] and is defined by the β = 4.3 reliability index with probability of failure pf ≈ 8.54·10-6. Shear connections have to transfer forces between structural members – steel body and bolts with adequate degree of safety. The load-carrying mechanism of bolted shear connections is complex and analytical methods for predicting the shear resistance are not applicable. Instead the resistance of the connections may be determined using empirical formulas. The distributions of horizontal and shear resistance within steel body - bolts will be described depending on material characteristics of steel body and bolts components. The characteristic resistance of steel shear connection is obtained as minimum of two variables: bolds resistance and steel body resistance. Probability function of this minima will be defined and described in this paper. Laboratory tests provide the only practicable basis for specifying safety margins for ultimate strength connections. The determination of partial safety factors within shear connections will be presented according to EN1990. Design value of such resistance is specified as suitable fractile of log- normal probability distribution, calculated with the assumption that the acceptable probability of down-crossing is not greater than pf,ult ≈ 2.91·10-4. It means that the target reliability index, defined for the resistance, is taken as βR.req = 3.44, in accordance with the European recommendations (EN 1990).
9
Content available Błędy wykonawcze podczas realizacji konstrukcji stalowych
100%
Litwin M. , Górecki M.
Budownictwo i Architektura
|
2009
|
tom vol. 4, nr 1
63-72
PL
Konstrukcje stalowe posiadają wiele zalet, które często przesądzają o ich zastosowaniu w realizowanych obiektach. Jednocześnie wymagają one dużej dokładności zarówno w zakresie projektowania jak i wykonania. Niezbędna precyzja jest często przyczyną błędów projektowych i wykonawczych. W niniejszym artykule opisano błędy wykonawcze, które najczęściej występują podczas realizacji konstrukcji stalowych. Artykuł wzbogacony jest o fotografie z realizacji obiektów, w których materiałem konstrukcyjnym jest stal. Przedstawione są najczęściej popełniane błędy.
EN
Steel structures have plenty of advantages, which decide on their usage in many buildings. At the same time require they great precision in the design stage as well as during the building phase. Indispensable precision is oft a reason for design and assembly mistakes. In the paper there are presented the assembly mistakes, which occur the most often during the realisation stage.
10
Content available Analysis of the load-carrying capacity of a steel frame under fire conditions
88%
Bilko P. , Sawczynski S.
Scientific Journal of the Military University of Land Forces
|
2018
|
tom Vol. 50, No. 1(187)
129--139
EN
This article aims at presenting the basic principles of designing steel structures according to Eurocode PN-EN 1993-1-2, i.e. with respect to ensuring the appropriate level of safety for such structures in case of a fire developing into flashover. The load-carrying capacity of a steel structure, serving as an example, was assessed on the basis of a static strain-stress analysis. The analysis was conducted regarding changes in the temperature of structural members, both the exposed and the fireproof protected ones, under fire conditions.
11
Content available Analysis of the load-carrying capacity of a steel frame under fire conditions
88%
Bilko P. , Sawczynski S.
Scientific Journal of the Military University of Land Forces
|
2018
|
tom 50
|
nr 1(187)
129-139
EN
This article aims at presenting the basic principles of designing steel structures according to Eurocode PN-EN 1993-1-2, i.e. with respect to ensuring the appropriate level of safety for such structures in case of a fire developing into flashover. The load-carrying capacity of a steel structure, serving as an example, was assessed on the basis of a static strain-stress analysis. The analysis was conducted regarding changes in the temperature of structural members, both the exposed and the fireproof protected ones, under fire conditions.
12
Content available Execution and Inspection of Steel Hollow Sections Welded Joint
88%
Kuchta K. , Silezin R. , Żwirek P.
Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture
|
2018
|
tom z. 65, nr 2
69--80
EN
The hollow section welded joints require a number of actions before starting welding and appropriate supervision during this operation to achieve joints with adequate quality level, which should be confirmed by the post-completion tests. The execution of hollow section joints is associated not only with welding, but also with cutting and additional machining of edges. In some cases, weld surfacing is also applied to correct sections fit-up. Weld surfacing and thermal cutting can cause local hardening of connected elements. The welding has to be preceded by an assessment of the previous technological processes. The welded joints can be only executed on the basis of detailed Welding Procedure Specifications (WPS). It is advisable to manufacture - in accordance with previously prepared WPS - pre-production joints for testing, proving the ability of the welding personnel to execute welded joints with specified quality, using the available equipment. The quality of welded joints is proved by testing. A type of conducted tests, thus scope and type of welding defects possible to detect, depends on the weld type, wall thickness of connected elements and joint geometry. The authors’ experience indicates that the proper execution of the welded joint of hollow sections is difficult task, which often requires pre-production quality testing of the joints.
13
Content available Modelling S235JRG2 steel load-carrying capacity and micro-damage development for static and quasi-static loads
88%
Wcislik W.
Challenges of Modern Technology
|
2011
|
tom Vol. 2, no. 3
58--61
EN
This paper deals with the analysis of plastic deformation and damage development in S235JRG2 steel in complex stress states and at different rates of loading. The material Gurson Tvergaard Needleman (GTN) model was applied. The analysis was performed for notched bars subjected to tension. An attempt was made to investigate the impact of load conditions on the value of critical void volume fraction (fc) in the GTN model. Numerical computations carried out with the use of GTN model made it possible to identify the sites of ductile fracture initiation.
14
Content available Preload monitoring in a bolted joint using Lamb wave energy
88%
Kędra R. , Rucka M.
Bulletin of the Polish Academy of Sciences. Technical Sciences
|
2019
|
tom Vol. 67, nr 6
1161--1169
EN
The knowledge of the load in prestressed bolted connections is essential for the proper operation and safety of engineering structures. Recently, bolted joints have become an area of intensive research associated with non-destructive diagnostics, in particular in the context of wave propagation techniques. In this paper, a novel procedure of bolt load estimation based on the energy of Lamb wave signals was proposed. Experimental tests were performed on a single lap joint of two steel plates. Ultrasonic waves were excited and registered by means of piezo-electric transducers, while precise measurement of the bolt load was obtained by means of using the force washer transducer. Experimental tests were supported by the finite element method analysis based on Schoenberg’s concept. The results showed that the relationship between the bolt load and signal energy was strongly nonlinear and it depended on the location of acquisition points.
15
Content available Przebudowy konstrukcji stalowych. Część 2 – analiza stali
75%
Gierczak J.
Builder
|
2016
|
tom R.20, nr 7
88--91
PL
Przydatność stali do modernizacji i przebudowy wymaga indywidualnych analiz pracy konstrukcji z uwzględnieniem danych historii obiektu.
EN
The problem of reconstruction of existing steel buildings will be presented in an article series, which will describe aspects and issues that are important from the point of view of a correctly and rationally led building reconstruction, according to the currently binding law and to the author’s personal experience.
16
Content available remote Zgrać stalowy szkielet
75%
Krasoń G.
Geodeta : magazyn geoinformacyjny
|
2020
|
tom nr 3
40--42
17
Content available remote Ochrona katodowa jako jeden ze sposobów ochrony antykorozyjnej dla konstrukcji stalowych
75%
Sawicki J. , Ciarka W.
Izolacje
|
2023
|
tom T. 28, nr 10
98--103
PL
Artykuł prezentuje metodę ochrony katodowej stosowaną do zabezpieczenia powierzchni konstrukcji stalowych przed korozją. Przedstawiono w nim zarys teorii ochrony katodowej, zakres i kryteria jej stosowania oraz uwarunkowania doboru odpowiednich systemów sprawdzalnych w eksploatacji.
EN
The article presents a cathodic protection method used to protect the surfaces of steel structures against corrosion. It presents an outline of the theory of cathodic protection, the scope and criteria of its application, and the conditions for selecting appropriate systems verifiable in operation.
18
Powłoki metalowe w ochronie antykorozyjnej konstrukcji stalowych
75%
Milewski W. , Olbrycht A. , Grądkiewicz Ł.
Mosty
|
2013
|
tom nr 5
48--49
PL
W niniejszym artykule autorzy prezentują zalety stosowania powłok metalowych w ochronie antykorozyjnej obiektów mostowych. Wskazują przede wszystkim na długoletnią trwałość takiego systemu ochronnego, dzięki czemu obiekty zabezpieczone za pomocą powłok metalowych nie wymagają tak często remontów, przez co koszty ich eksploatacji są znacznie niższe.
EN
In the article the authors present the advantages of metal coatings in the anticorrosive protection of bridges. They primarily highlight the long-term durability of such a protective system, therefore the structures protected with the metal coatings do not require frequent renovations and their maintenance costs are much lower.
19
Content available Analiza technologiczności rozwiązań projektowych obiektów budowlanych o konstrukcji stalowej
75%
Bizon-Górecka J. , Matuszczak M.
Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture
|
2017
|
tom z. 64, nr 2/II
227--234
PL
Celem artykułu jest wskazanie możliwości oceny jakości rozwiązań konstrukcyjno- materiałowych poprzez analizę ich technologiczności, formułowanej też jako jakość technologiczna. Pojęcie technologiczności obiektu budowlanego zdefiniowano jako przystosowanie zastosowanych rozwiązań do łatwego i uzasadnionego ekonomicznie wykonania, zapewniającego spełnienie wymagań stawianych obiektowi w całym cyklu jego życia. Cykl życia obiektu budowlanego rozpoczyna artykułowanie potrzeb budowlanych, następnie pojawia się koncepcja i studium wykonalności przedsięwzięcia, po czym występuje projektowanie obiektu i procesów wykonawczych. Kolejne fazy cyklu życia obiektu to realizacja procesów logistycznych i budowlanych, które kończy oddanie do użytkowania. Dalej rozpoczyna się eksploatacja zakończona likwidacją. Podjęto próbę specyfikacji kryteriów oceny jakości technologicznej obiektów wznoszonych w konstrukcji stalowej z uwzględnieniem poszczególnych faz cyklu istnienia obiektów. Dociekania przeprowadzono na podstawie dostępnej literatury oraz praktycznych doświadczeń autorów opracowania. Wskazano potrzebę rozważań konstrukcyjno-materiałowych i metody wznoszenia obiektu jako grupy kryteriów ogólnych. Podkreślono, niezauważaną dotychczas, konieczność uwzględnienia w ocenie technologiczności perspektywy podmiotowej. Wynika to ze specyficznych wymagań stawianych obiektom budowlanym przez poszczególnych interesariuszy budowlanych projektów inwestycyjnych. Z uwagi na fakt, że procesy kształtowania obiektu w fazie programowej, projektowej i realizacyjnej są związane z procesami eksploatacyjnymi i fazą likwidacyjną, podkreślono, że każdy z interesariuszy winien postrzegać wszystkie etapy cyklu życia obiektu.
EN
A purpose of the article is to point out a possibility of assessing the quality of construction and material solutions by analyzing their manufacturability, understood as a technological quality. A concept of manufacturability of buildings is defined as an adaptation of the solutions to get an easy and economically viable performance, ensuring a fulfillment of all requirements imposed on a building throughout its life cycle. An objective and needs are identified in the beginning of the building life cycle of the construction. Then there is a conceptual design and a feasibility study followed by a detailed design and creating a documentation. After that there are construction processes along with construction logistics and building commissioning in the end. Next an operation and a maintenance are followed by a demolition. It was made an attempt to specify some factors of assessing the technological quality of steel frame buildings especially in each phase of the building life cycle. Studies were carried out on the basis of the available literature and practical experience of the authors. It was indicated that a need for considering the construction and material solutions is very important. A so-far-neglected need for taking into consideration a stakeholder perspective in a manufacturability assessment was emphasized in the article. It results from some specific requirements of the building given by project stakeholders. Due to the fact that shaping an object in a concept-design-construction phase is related to building operations-maintenancedemolition phase, each stakeholder should consider all stages of the building life cycle.
20
Content available remote Decrease of negative impact of transport infrastructure investments on natural migration of the wild animals
75%
Wysokowski A. , Staszczuk A. , Bednarek B.
Archiwum Instytutu Inżynierii Lądowej
|
2007
|
tom Nr 1
287-295
EN
Fast growth of roads and traffic has very important impact on wildlife. General information about the harmful effect of transportation investments connected with migration of the animals is presented. A classification of typical passages for animals together with descriptions is included. Practical examples of different applications of corrugated steel structures to construct animal passings prove that such structures can be used to create aesthetic and environmental friendly crossings.
PL
Szybkie powstawanie dróg oraz rosnący ruch samochodowy wywierają, duży wpływ na" przyrodę. W referacie przedstawione zostały informacje ogólne dotyczące szkodliwego wpływu inwestycji związanych z transportem, które kolidują z szlakami migracji zwierząt. Referat zawiera klasyfikację i opis typowych przejść dla zwierząt. Praktyczne przykłady różnych zastosowań karbowanych konstrukcji stalowych do budowy przejść dla zwierząt udowadniają, że tego typu konstrukcje mogą być używane do stworzenia przejść estetycznych i przyjaznych środowisku.
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