By Zoltan Agocs, Jan Brodniansky, Josef Vican, Jerzy Ziolko
The cloth houses, spatial configuration and edition within the building of metal constructions potential they typically have the potential of reconstruction. This ebook offers civil engineers with the mandatory details to method tasks of reconstruction and reinforcement of metal buildings reminiscent of structures, masts, towers, chimneys, garage tanks and bridges.The ebook analyses the reasons of mess ups, provides updated info at the technique and gear used for analysis of mess ups, and features a survey of fix and reconstruction thoughts. The tools defined are illustrated through examples of winning real-life case experiences, and proper codes are tested the place appropriate.Assessment and Refurbishment of metal constructions is a entire blend of either conception and perform, and is a vital reference for engineers engaged within the modernisation and service of civil engineering metal buildings.
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Additional resources for Assessment and Refurbishment of Steel Structures
Sample text
By evaluation of an existing bridge structure is understood a complex assessment based on processing all available information, so that it is possible to reach the optimum most economic decision on the strategy for further maintenance, repairs and reconstruction of the bridge. From this perspective, the evaluation has a key Introduction 21 position in the overall system of bridge management. That is why it should be as unbiased as possible, considering the current technical condition of the bridge on a scientific basis as well as on the basis of present knowledge and scientific standards to do with bridge structures.
Reinforcement of the structure An adaptation intended to recover operational features of a structure or to increase the increasing loading capacity, reliability and serviceability of the structure Direct reinforcement The reinforced and reinforcing parts that constitute one loadbearing element Indirect reinforcement An arrangement in which the reinforced and reinforcing parts of the structure are constituted by separate load-bearing elements Structure securing A temporary arrangement to secure the reliability of a structure Renovation An arrangement of structural parts or the structure as a whole after extraordinary events and accidents Extension (of a superstructure and additional building) An extension of an existing section of the structure Replacement An arrangement that replaces the original structure or a section of it by a new structure linked to an existing layout Relocation A part of the original or the entire original structure are moved Special arrangements include: • Indirect reinforcing • Changes to the static system Assessment and refurbishment of steel structures 4 • Prestressing • Reinstallation of the structure for other uses.
The fundamental quantitative and qualitative parameter in reliability-based evaluation of existing bridge structure is its live-load rating factor. The live-load rating factor is generally understood as the amount of bridge capacity used by a variable short-term traffic load. Therefore it is expressed via the level of effect of an appropriate variable short-term traffic load, either road or railway traffic, which in practical calculations is simulated by ideal load models. Loading capacity is established for separate elements of the bridge structure as a marginal condition of reliability of the relevant limit state.