Dinamička analiza lučne brane

  • Abdelkrim Benahmed Univerzitetski centar „Nur Bašir”, Odeljenje za nauku i tehnologiju, El Bajad, Narodna Demokratska Republika Alžir https://orcid.org/0009-0009-4822-2810
  • Otbi Bouguenina Univerzitetski centar „Nur Bašir”, Odeljenje za nauku i tehnologiju, El Bajad, Narodna Demokratska Republika Alžir https://orcid.org/0000-0002-5611-140X
  • Ali Meksi Univerzitet „Mustafa Stamboli”, Fakultet nauke i tehnologije, Odsek za građevinarstvo, Laboratorija za ispitivanje strukture i mehanike materijala, Maskara, Narodna Demokratska Republika Alžir https://orcid.org/0009-0009-0320-3704
  • Khaled Benmahdi Univerzitet „Mustafa Stamboli”, Fakultet nauke i tehnologije, Odsek za građevinarstvo, Laboratorija za ispitivanje strukture i mehanike materijala, Maskara, Narodna Demokratska Republika Alžir https://orcid.org/0000-0002-8244-5817
  • Khaled Bendahane Univerzitetski centar „Nur Bašir”, Odeljenje za nauku i tehnologiju, El Bajad, Narodna Demokratska Republika Alžir https://orcid.org/0009-0009-8408-9666
  • Mohamed Sadoun Univerzitet „Mustafa Stamboli”, Fakultet nauke i tehnologije, Odsek za građevinarstvo, Laboratorija za ispitivanje strukture i mehanike materijala, Maskara, Narodna Demokratska Republika Alžir https://orcid.org/0009-0008-2314-9402
DOI: https://doi.org/10.5937/vojtehg72-49173
Ključne reči: dinamičko ponašanje, metod konačnih elemenata, formiranje prslina, brana, spektralna analiza

Sažetak


Uvod/cilj: Dinamička analiza seizmičkog odgovora lučne brane od betona predstavlja složen problem gde predstavljanje ponašanja materijala zahteva neki oblik nelinearnog modela, naročito ako je beton izložen velikom opterećenju temeljne površine. U slučajevima kada dolazi do masivnih pomeranja tla, velike prsline mogu da se formiraju na brani, naročito u njenoj osnovi, kao i u blizini iznenadnih promena u geometriji.

Metode: Ova analiza je zasnovana na numeričkoj simulaciji dinamičkog odgovora. Rad se zasniva na korišćenju metode konačnih elemenata pomoću programa ANSYS 12.1. Brana je modelovana u dve dimenzije. Korišćene su četiri vrste analiza: statička analiza, modalna analiza, seizmička analiza sa pobudom dva akcelerograma (Asnam 1980 i Bumerdes 2003) i spektralna analiza.

Rezultati: Ova analiza ukazala je na ranjivost brane Brezina od zemljotresa jačine onog u Bumerdesu sa velikim opterećenjima na temelj strukture.

Zaključci: Na osnovu ove studije zaključeno je da bi zemljotres veće jačine od onog u Bumerdesu izazvao strukturna oštećenja i prsline na brani Brezina koji bi ugrozili njenu vodonepropusnost i trajnost.

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Objavljeno
2024/09/28
Broj časopisa
Vol. 72 Br. 3 (2024): jul-septembar
Rubrika
Originalni naučni radovi

Sva prava zadržana (c) 2024 Abdelkrim Benahmed, Otbi Bouguenina, Ali Meksi, Khaled Benmahdi, Khaled Bendahane, Mohamed Sadoun

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