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    Wyświetlanie 1-8 z 8
    Tytuł:
    Structure in big skew - Gladsaxe case Denmark
    Autorzy:
    Tomala, P.
    Vegerby-Hansen, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/383598.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    buried steel structures
    underpass
    big skew
    Opis:
    This paper presents how to solve the end treatment for buried steel structure designed initially in an incorrect way. Structure VR9 with span of 4.77m and rise of 3.83m was designed with skew of 28 degree with beveled end cut 1:1.5. Due to heavy loads LM1 LL vehicle the cut end would be subjected to huge deformations. The solution of the problem required the designing of: geogrids to reduce the horizontal active pressure and the 3D concrete frame to carry the vertical loads (soil and traffic). Fem 3D analysis and final solution of cut end reinforcement will be presented in this paper.
    Źródło:
    Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 279-286
    1897-4007
    Pojawia się w:
    Archiwum Instytutu Inżynierii Lądowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Construction of pedastrian crossing under electified multitrack railway line
    Autorzy:
    Woch, M.
    Tomala, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/383892.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    buried steel structures
    underpass
    railway line
    infrastructure
    Opis:
    Paper presents an alternative solution to the classic issue - a flexible hurried steel structure as the superstructure of pedestrian underpass at Kapitulna street in Włocławek which provides crossing under the tracks of the electrified railway line Number 18 Kutno-Piła. Underpass was built in 2012 by HUSAR BUDOWNICTWO INŻYNIERYJNE commissioned by Włocławek city. The use of the corrugated steel structure allowed for a very quick execution of the investment, without detriment to aesthetics and functionality of underpass.
    Źródło:
    Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 325-331
    1897-4007
    Pojawia się w:
    Archiwum Instytutu Inżynierii Lądowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Durability of flexible steel corrugated shell structures - theory and practice
    Autorzy:
    Wysokowski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/383408.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    flexible steel structures
    durability
    fatigue
    corrosion
    service life
    Opis:
    The technical issues described in this paper concern the durability aspects of buried flexible steel structures. It is well known that due to the nature of the bridge loads including buried flexible steel structures, they are particularly exposed to fatigue. Fatigue of steel structures - in this case corrugated steel plates - is closely related to such important parameters as safety and durability, and has direct impact on the service life of these structures. As these issues are very important, they are often analyzed by many research centers, with the present author contributing to the work of many of them. Fatigue reveals itself in the critical phase as fatigue cracks in structural steel, or in the joints. In such critical cases this leads to the exclusion of objects from the service. The fatigue of soil structure around the steel corrugated shell in the structures under analysis should also be taken into account. Fatigue in steel structures intensified by the occurrence of corrosion due to the operating conditions of the structures (negative environmental impact of water) is widespread. According to the author, proper construction of buried flexible steel structures and their maintenance undoubtedly increase the safety of users and extend the service life. At the end on the paper the author describes one of the methods of increasing the durability of shell structures by reinforcing the soil using a geotextile geomembrane.
    Źródło:
    Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 347-361
    1897-4007
    Pojawia się w:
    Archiwum Instytutu Inżynierii Lądowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ultracor - 1-st realization in Europe, design, erection, testing
    Autorzy:
    Machelski, C.
    Tomala, P.
    Kunecki, B.
    Korusiewicz, L.
    Williams, K.
    El-Sharnouby, M. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/383508.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    buried steel structures
    underpass
    large span
    full scale test
    Opis:
    This paper presents design, realization and testing process of 1-st UltraCor structure in Europe. The scope of the design and intalation is 25.50 m Span, 9.00 m Rise structural plate structure of 500x237mm corrugation with only 9.5 mm plate thickness. Structure will cary the heavy traffic of S7 express road. It was designed for the highest class of loads acc. to Polish Standard. Under the structure there is a local raod and animal crossing.
    Źródło:
    Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 189-197
    1897-4007
    Pojawia się w:
    Archiwum Instytutu Inżynierii Lądowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Foundation of flexible steel structures - developmental trends
    Autorzy:
    Wysokowski, A.
    Mońka, M.
    Howis, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/383436.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    buried flexible steel structures
    foundation
    developmental trends
    flexible foundations
    laboratory tests
    optimization
    Opis:
    The technical issues described in the paper concern aspects of foundations of buried flexible steel structures. The foundations of these structures are most frequently made as traditional “rigid” structures (which is related to their massiveness - most commonly reinforced concrete), or in the form of properly profiled soil foundations (depending on the shape of the coating). Comparison of the two issues of “vulnerability”, i.e. the bearing structure and the ’’rigidity” of foundations, is the main motivation to carry out testing and conduct an analysis in this area. The problems are discussed in the paper in the context of new developments in the field of “flexible” foundations of the structures in question. Further development analyses are currently in progress , which will be practically implemented in the form of appropriate guidelines. In the authors' opinion, this will help to optimize the design of the in which the foundation of these structures.
    Źródło:
    Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 363-373
    1897-4007
    Pojawia się w:
    Archiwum Instytutu Inżynierii Lądowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Value engineering of buried flexible steel structures
    Autorzy:
    Janusz, L.
    Stachowicz, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/383538.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    life cycle cost (LCC)
    alternatives
    value engineering plan
    maintenance
    value of money in time
    buried flexible steel structures
    Opis:
    This paper presents the implementation of the Value Engineering concept in the area of buried flexible steel structures. A short background of Value Engineering is presented to clarify the concept. Furthermore, its specific application is considered based on a holistic approach incorporating all relevant areas such as design, construction, cost, timing, maintenance, value of money in time, decision maker preferences. A short example showing the practical application is presented and discussed in view of the sensitivity of the results.
    Źródło:
    Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 133-144
    1897-4007
    Pojawia się w:
    Archiwum Instytutu Inżynierii Lądowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Programming of geometry changes during construction of the soil-steel composite bridges
    Autorzy:
    Michalski, J. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/383579.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    soil-steel composite structures
    deformations during backfilling
    geometry changes in the construction stage prestressing of the steel shell
    Opis:
    The paper presents the issue of estimating the geometry changes during construction of soil-steel composite bridges. Author presents the influence of the backfilling process on the geometry of the profile and the means to increase the upward deflection with the use of mechanical tensioning. Also the relations between horizontal and vertical deflections depending on the level of backfill are presented. Based on author’s observations, the paper will address the way to calculate the crown point upward deflection due to backfilling. Paper also elaborates on the consequences of inappropriate upward deflection during backfilling at the service stage of the corrugated structures.
    Źródło:
    Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 199-217
    1897-4007
    Pojawia się w:
    Archiwum Instytutu Inżynierii Lądowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Examination of remaining zinc coating on old corrugated steel culverts under railway
    Autorzy:
    Hansing, L.
    Cederqvist, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/383930.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    remaining zinc coating
    flexible structures
    old corrugated steel culverts
    life time of zinc coating
    atmospheric corrosion
    mass loss
    thickness reduction
    Opis:
    In this paper the authors present measurements of the zinc coating thickness performed on old corrugated steel culverts under railway in Sweden. The measurements were performed in the summer of 2015. The object of the study is to have an indication on how hot dip galvanized corrugated steel culverts withstand real conditions. This information forms an important basis for the decision on possible life time expectancies for those structures.
    Źródło:
    Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 125-131
    1897-4007
    Pojawia się w:
    Archiwum Instytutu Inżynierii Lądowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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