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Determinazione della pressione frontale nelle macchine per tunnel EPB

Determinazione della pressione frontale nelle macchine per tunnel EPB

C. Okay AKSOY / G. Gulsev Uyar Aksoy / H. Eray Yaman

60,52 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2024
Materia
Ciencia: cuestiones generales
ISBN:
9786207224982
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Le alesatrici per tunnel sono le macchine più comunemente utilizzate nello scavo di gallerie urbane. Uno dei rischi più importanti è il danneggiamento delle strutture lungo il percorso del tunnel durante o dopo lo scavo del tunnel. Negli scavi di gallerie urbane, che generalmente vengono scavati in condizioni di terreno debole e difficile, vengono utilizzate macchine che lavorano con il metodo del bilancio della pressione terrestre. Queste macchine impediscono il movimento verso l’interno della facciata del tunnel e controllano la quantità di assestamenti applicando pressione alla facciata del tunnel. La questione più importante qui è determinare la quantità di pressione da applicare alla facciata del tunnel. Esistono molte formule ampiamente accettate utilizzate nel calcolo della pressione frontale e queste formule generalmente cercano di limitare gli assestamenti al suolo utilizzando dei parametri. In questo studio è stata sviluppata una nuova formula. Questa nuova formula calcola la pressione del fronte che deve essere applicata dall’EPB al fronte del tunnel per prevenire danni ad una struttura situata sul tracciato e all’interno dell’area che sarà interessata dallo scavo del tunnel, invece di prevenire solo assestamenti in superficie.

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