Simplified method of bridge durability determination

Zobel, Henryk; Alkhafaji, Th; Wróbel, Mateusz

doi:10.1201/b17063-16

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…13) [11][12][13][14]. The footbridge in the Pieniny mountains was built in 2006 and was designed as a large-span, cable-stayed structure made of glued-laminated wood [15], whereas the footbridge in Jadwisin was designed in 2005 and constructed in 2008 as an arch, steel structure with decks made of reinforced concrete. Coupling of Robot Millennium software with Matlab programming and numeric computing platform was an uncommon and innovative design idea in those times.…”

Section: Discussionmentioning

confidence: 99%

Archives of Civil Engineering

Hawryszków,

Czaplewski

2022

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Mathematical package Matlab is a very convenient programming language, used for calculations in the field of linear algebra for scientists and engineers. Its main advantage for civil engineers is the simplicity of the language and the wide range of application in the field of linear statics. This mathematical platform was used for programming of static calculations of multi-span, continuous, beam bridge structures. In the formulated theoretical approach, the internal forces were calculated using the method of forces. Knowing the influence matrix and load values in the unit states, the envelope of internal forces can be determined. The first step is entering the vector of loads and the second is calculating an envelope using special function. Obtaining the results from individual loads in a variety of operating conditions, it is possible to calculate the global envelope of internal forces and proceed with modifications of the model. The theoretical approach was computationally tested on the example of an alternative design concept of the MA-46 bridge along the A4 motorway. One of the biggest advantages of the discussed computational approach is the wide access to the results of intermediate calculations.Another benefits of working with mathematical packages are improving insight in the field of static calculations and getting used to working with code like in some programs for structural analysis (e.g. SOFiSTiK). The discussed computational approach is a good way to pre-design due to the little time required to compare several variants of solution, so it can be helpful in optimizing the structure.

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Section: Discussionmentioning

confidence: 99%

Archives of Civil Engineering

Hawryszków,

Czaplewski

2022

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“…by measuring corrosion losses) should be determined. These inspections should include checking the layout of the structure and the actual parameters of embedded materials [10,11]. Comprehensive assessment of the degree of degradation and determining causes of defects and damage allows to decide properly about the further use of the object.…”

Section: Introductionmentioning

confidence: 99%

Analysis of technical condition of footbridges over the railways in danger of collapse

Chmielewski

Bąk

2019

MATEC Web Conf.

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The article presents issues related to the maintenance of small engineering structures, such as footbridges over railways. These types of objects, usually are simple both in structure and construction. Design and construction errors usually, do not endanger the safety of the structure, although unrepaired ones may shorten the usability of the object. Particular attention should be paid to the elements of drainage, because effective rainwater management has significant influence to engineering structures usability. Regular inspections should ensure the operation of facilities that allow to avoid excessive deterioration of functional properties or maintaining objects in a proper technical and aesthetic condition. Structural collapses, that took place between 2014 and 2017 constitute only 2.85% [3], which indicates the improvement of quality of both design and implementation. However, it should be noted that maintenance errors are the second cause of structural failures. Therefore, it is necessary to emphasize crucial role of people performing periodic inspections of buildings, whose recommendations should be adhered and implemented by facility managers. The article presents examples of two footbridges over railways, that due to improper maintenance were excluded from use. Further operation of these footbridges threatened with construction collapse.

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“…At present, the endeavour for improvement of the diagnostic tools [3] as well as the development of a system for assessing the degree of degradation of bridges over time can be noted. These tools would have supported the assessment of the current technical condition and would have allowed the forecasting the durability of bridge structures [4][5][6][7][8][9][10][11][12][13][14]. Properly carried out diagnostics of bridge structures and proper interpretation of the causes of damage and irregularities allows for the development and implementation of new structural solutions in bridge engineering [15] and innovative construction materials [16].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the technical condition of a railway bridge at risk of failure

Piechota

Rogojsz

2019

MATEC Web Conf.

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The paper presents an analysis of the technical condition of a railway bridge structure with a span structure in the form of welded girders. Static diagram of the structure consists of two simply supported beams. The theoretical span of the spans is 2 x 14.50 m, their overall length is 14.90 m, and the total length of the crossing is 30.6 m. The reasons for the formation and development of bridge degradation were analysed. In addition, the actual load capacity of the structure was determined and the possibility of its further operation was evaluated. Particular attention was given to the quality of workmanship and the degradation progress of welded joints, which led to the exclusion of the object from use. The main purpose of the presented analyses is to formulate general recommendations, whose implementation in a direct or indirect form may contribute to reducing the degradation process of railway steel bridge structures. When inspecting welded railway bridges, particular attention should be paid to the condition of welds and to control and prevent the structure from cracking.

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Simplified method of bridge durability determination

Cited by 3 publications

References 1 publication

Archives of Civil Engineering

Archives of Civil Engineering

Analysis of technical condition of footbridges over the railways in danger of collapse

Analysis of the technical condition of a railway bridge at risk of failure

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