Effects of sudden failure of shoring elements in concrete building structures under construction

Buitrago, Manuel; Sagaseta, Juan; Adam, José M.

doi:10.1016/j.engstruct.2018.06.052

Cited by 22 publications

(9 citation statements)

References 24 publications

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“…This is a shift from traditional views in design practice in which local failures in construction works were generally assumed to have less serious consequences than permanent works, so that a collapse due to an accidental event would be acceptable if agreed to by the client or relevant authority. The only study to date on the progressive collapse of a building under construction attributable to the failure of temporary structures was carried out by Buitrago et al [286], so that much more work needs to be done on this topic. j) Punching in flat slabs.…”

Section: Conclusion and Needsmentioning

confidence: 99%

Research and practice on progressive collapse and robustness of building structures in the 21st century

Adams

Parisi

Sagaseta

et al. 2018

Engineering Structures

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393

136

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Section: Conclusion and Needsmentioning

confidence: 99%

Research and practice on progressive collapse and robustness of building structures in the 21st century

Adams

Parisi

Sagaseta

et al. 2018

Engineering Structures

Self Cite

393

136

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“…Robustness against possible failure of elements in the bridge's main latticework was also studied by recreating artificially failures in the main trusses. The aim was thus, not to determine the causes of possible crack initiation and propagation, but to determine the consequences of a local element failure, known as the scenario-independent approach [7][8][9][10], widely used to study progressive or disproportionate structural collapse after a local failure. This method can evaluate structural robustness understood as insensitivity to or propagation of a local failure.…”

Section: Robustness: Experimental and Numerical Approachmentioning

confidence: 99%

Fatigue Assessment of Old Riveted Railway Bridges: Laboratory Testing of a Real Bridge

Adam¹,

Calderón²,

Buitrago³

et al. 2021

12th International Conference on Structural Analysis of Historical Constructions

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The bridge over the Quisi Ravine in Alicante Province (Spain), built between 1913 and 1915, consists of six 22-22-42-42-22-22 m long steel Pratt truss spans, the lateral spans being isostatic and the central spans continuous. All the joints between the steel elements are riveted. As the bridge has been carrying railway traffic for more than 100 years, its condition needed to be assessed before carrying out the necessary repairsreinforcement to extend its service life. One of the most interesting tasks on the bridge involved a study of its fatigue behaviour to estimate its remaining useful life. Only a few kilometres away there happened to be another bridge with identical geometry over the Ferrandet Ravine, which had recently been dismantled and taken out of service and had carried the same railway traffic as the one over the Quisi Ravine. Advantage was therefore taken of this unique opportunity to test one of its isostatic spans in order to extrapolate the results to the Quisi Bridge. These tests were carried out at the ICITECH laboratories at the Universitat Politècnica de València in two different scenarios: 1) one test on a 22 m span, and 2) another on one of its girders, in both of which simulated railway traffic cyclical loads were applied. The results allowed us to estimate the number of trains that could pass over the bridge and its remaining service life, and also to define a monitoring method to help in decision making in case of possible failures of its component parts. The study also included an analysis of the bridge's robustness in local failures of some of its elements, which led to a further bridge cyclical loading test with a deliberately damaged component. Even though other researchers had previously carried out fatigue tests on full-scale riveted bridge elements, the ICITECH study is unique in that it is the first time a full-scale bridge has been subjected to fatigue tests. This work was accompanied by advanced numerical modelling studies considering the fracture mechanics theory.

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“…In 2015 Buitrago et al [33] introduced the concept of a load limiter on shores. The load limiter concept arose from the need to reduce the safety problems that occurred when buildings were being constructed [7,34]. When fitted to shores, these devices keep the load on the shore below its allowable load.…”

Section: Load Transmission Without Considering Temperature Creep or mentioning

confidence: 99%

Load transmission between slabs and shores during the construction of RC building structures – A review

Buitrago

Adam

Moragues

et al. 2018

Engineering Structures

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Shoring successive floors is at present the most frequently used technique when constructing reinforced concrete (RC) building structures. This technique allows the recently poured slabs to be supported by the lower slabs by means of shores. Considering the particular characteristics of shoring successive floors, it is very important to be able to estimate how loads are transmitted between shores and slabs in order to maintain adequate structural safety and avoid situations of risk or even collapse in buildings under construction. The transmission of loads from shores to slabs during all the construction stages is a complex phenomenon and has been the subject of numerous studies, especially in recent years. The research carried out to date has included experiments on full-scale buildings and the development of advanced numerical models, the estimation of the loads acting on slabs during construction, the definition of simplified calculation methods to estimate loads on slabs and shores during building construction and estimating the appropriate construction times taking into account the evolution of the mechanical properties of early-age concrete. This paper was conceived in order to give an answer to: 1) advances in the field of constructing RC building structures, 2) the growing interest of the scientific community, and 3) the need for the structural and construction engineering sector to have the tools available to increase the safety and design of building construction processes. The paper is unique in the field of RC building structures in that it is the widest, most complete and most ambitious review carried out to date and includes the most important advances in the study of slab-shore load transmissions. This work will be of interest 2 to researchers who wish to go deeper into the field of building construction, and to more experienced professionals who require all the up-to-date information in a single document. However, engineers, architects and builders could also find the paper an excellent guide that will help them to improve their daily work in the field of designing and constructing buildings.

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Effects of sudden failure of shoring elements in concrete building structures under construction

Cited by 22 publications

References 24 publications

Research and practice on progressive collapse and robustness of building structures in the 21st century

Research and practice on progressive collapse and robustness of building structures in the 21st century

Fatigue Assessment of Old Riveted Railway Bridges: Laboratory Testing of a Real Bridge

Load transmission between slabs and shores during the construction of RC building structures – A review

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