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Trwałość konstrukcji gruntowo-stalowych

100%

Bęben D.

Roczniki Inżynierii Budowlanej

2009

tom z. 9

17--20

The paper presents the description of soil-soil structures as well as the introduction to solving the problem of durability of this type of structure. Durability of such structures should be understood as the service life strength of the soil-steel system with respect of resistance on the external factors, e.g. chemical and electrochemical corrosion, abrasion. In order to evaluate the durability of soil-steel objects made from flexible steel structures, Miner’s method, usually used to traditional steel bridges is proposed.

Zagadnienia projektowe i błędy wykonawcze mostowych konstrukcji gruntowo-stalowych

84%

Bęben D.

Drogownictwo

2013

tom nr 3

74-79

Powłoki stalowe wykonywane z elementów blach falistych współpracujące z otaczającym je gruntem są coraz częściej wykorzystywane do budowy obiektów mostowych na ważnych drogach i liniach kolejowych. W wielu przypadkach dochodzi jednak do popełniania przez projektantów i wykonawców tych obiektów błędów przy ich projektowaniu i budowie. Przedstawiono najczęstsze błędy projektowe i wykonawcze obniżające, niekiedy w dość istotny sposób, trwałość tych obiektów. Podano wymagania normowe i technologiczne oraz sposoby montażu tego rodzaju konstrukcji.

The steel shells made of corrugated plate elements cooperating with the surrounding soil are increasingly being used for construction of bridges on major roads and railway lines. In many cases the designers and contractors commit faults in design and construction of these structures. The paper presents the most common design and construction faults which lead to lower durability of these structures. The standards and technical requirements as well as the assembly methods of this structure type are also given.

Rational steel mesh layout influence on plate utilization of large span corrugated steel structure

67%

Bareikis N.

tom Vol. 70, nr 3

561--578

Corrugated steel structures buried in the surrounding soil are currently used worldwide in road and railway engineering as culverts, pedestrian and animal crossings, tunnels and bridges. The need of large span corrugated steel structures is rapidly growing however their behavior analysis is still understudied. There is also a lack of discussion about the impact of additional strengthening elements for the behavior of corrugated steel structures. This study analyses the influence of rational steel mesh layout on the behavior of a large span deepest corrugation steel structure. The numerical two-dimensional model of two-radius 17.5 m span profile with corrugation of 237 mm depth and 500 mm pitch was developed to replicate the ongoing project in Lithuania. Originally the stiffness of the structure from both sides was increased by six layers of steel meshes as lateral support. Nevertheless, the current study was looking for rational steel mesh layout. Also, the influence of different layouts of steel mesh on corrugated steel plate utilization to buckling failure in the peaking, dead load and in the most unfavorable live load location phase was analyzed. The finite element model results indicated that steel meshes could be used to control structure deformations and internal reactions. Vertical displacement of the crown of the structure could be reduced by 45% in the peaking phase when using proper steel meshes layout. Furthermore, steel meshes could be a decisive factor for the bearing capacity of corrugated steel structure in a positive sense.