Temat: obciążenie wybuchem - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Resistance of columns
Autorzy:: Eamon, C.
Alsendi, A.
Powiązania:: https://bibliotekanauki.pl/articles/129235.pdf
Data publikacji:: 2017
Wydawca:: PWB MEDIA Zdziebłowski
Tematy:: podpora betonowa
most
analiza elementów skończonych
obciążenie wybuchem
podmuch
concrete column
bridge
finite element analysis
explosive load
blast
Opis:: A large strain, large displacement finite element model that allows element separation and failure is constructed and validated based on existing results of reinforced concrete columns subjected to blast loads. In this approach, concrete is represented with the Johnson-Holmquist-Cook model while a plastic-kinematic relationship describes steel behavior. The model is used to predict the capacity of typical reinforced concrete bridge columns to resist an assumed blast load scenario, where changes in concrete strength, steel reinforcement ratio, and axial force on the column are considered. The effectiveness of a method of column protection is investigated, where existing columns are wrapped with a relatively inexpensive steel fiber reinforced polymer (SFRP) jacket. It was found that the use of SFRP can significantly enhance the resistance of the columns.
Źródło:: Builder; 2017, 21, 12; 66-69
1896-0642
Pojawia się w:: Builder
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of the structural response of Beirut port concrete silos under blast loading
Autorzy:: Ismail, Sahar Ali
Raphael, Wassim
Durand, Emmanuel
Kaddah, Fouad
Geara, Fadi
Powiązania:: https://bibliotekanauki.pl/articles/1852380.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: obciążenie wybuchem
uszkodzenie
analiza elementów skończonych
interakcja grunt-konstrukcja-fundament
silos betonowy
blast loading
failure
finite element analysis
soil-structure-foundation interaction
concrete silo
Opis:: Several months after August 4, 2020, Lebanon is still recovering from the enormous explosion at the port of Beirut that killed more than 200 people and injured more than 7500. This explosion ripped the city to shreds and significantly damaged the Beirut port silos. Saint Joseph University of Beirut “the school of engineering ESIB” in collaboration with “Amann” Engineering performed a 3D scan of the Beirut port silos to assess the silos’ level of damage. The obtained data was then compared to the numerical modelling results, obtained from Abaqus explicit, in order to estimate the blast magnitude and to check if the pile foundation can be reused in building new silos at the same place due to the limited space available at the port of Beirut while considering the soil-foundation-structure interaction effect. In addition, the silos’ structural response against the filling of the silos at the time of explosion was investigated. The displacement of the silos and the amount of silos’ damage obtained from the fixed and flexible numerical models indicate that a blast magnitude of 0.44 kt TNT (approximately 1100 tons of Ammonium Nitrate) best estimates the 20 to 30 cm silos’ tilting in the direction of the blast. In addition, the soil and the foundation played a positive role by absorbing part while dissipating less amount of the blast energy. Also, the grains at the time of the event did not affect the silos’ deformation and damage amount. Noting that the displacement of the pile foundation exceeded all limits set by design codes, indicating that the pile foundation cannot be reused to build new silos at the same place.
Źródło:: Archives of Civil Engineering; 2021, 67, 3; 619-638
1230-2945
Pojawia się w:: Archives of Civil Engineering
Dostawca treści:: Biblioteka Nauki

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