Construction is a continuously evolving field. Offshore construction is a representative example of the change made by human. It goes without saying offshore construction unlocked a completely new field with great challenges. Offshore construction covers a wide spectrum of facilities built away from the shore. Constructions are made on the shore and transported to the site and placed into their final position with use of cranes. Likewise living quarters with helideck are manufactured on the shore unlike the normal onshore construction it has to be made with special requirements from the Norwegian codes such as NORSOK, DNV and ISO. The aim of this work, starting from an existing design, is to re-engineering the LQ to compare different models in terms of functionality, weight and cost effectiveness. This work is carried out with specific focus to the different external walls (blast and fire resistant); additionally, this design shall take into consideration the environmental conditions such as wind, snow, ice and earthquake (if effective) and provide the safety, security and comfort for workers. Living quarter is modelled in finite element program SAP2000, basic model is created without helideck for three different external walls. Model with less displacement, low weight and low cost is selected for further analysis. Helideck is positioned on the selected model and analysis are repeated. All the beams and columns passed the stress capacity check under ULS, SLS and ALS load combinations according to NORSOK N-004. Lifting analysis is performed to ensure the safety of the module during the lifting and positioning on platform. After the verification of the model, evaluation matrix is made to show the difference in performances of the materials installed on the LQ. Selected living quarter is a possible light weight structure, low cost module with high performances of materials against fire and blast loading.
Il settore delle costruzioni è un campo in continua evoluzione e le strutture offshore ne sono un tipico esempio. Inutile dire che le costruzioni offshore abbiano sbloccato un campo completamente nuovo definito da grandi sfide, ricoprendo un ampio spettro di strutture costruite lontano dalla terra ferma. Le strutture vengono costruite a riva, poi trasportate al sito e collocate nella loro posizione finale tramite gru. Allo stesso modo, le abitazioni con eliporto sono fabbricate sulla terra ferma, ma a differenza delle normali costruzioni, devono essere realizzate con requisiti speciali dettati da codici norvegesi ed internazionali come NORSOK, DNV e ISO. Lo scopo di questo lavoro, partendo da un progetto esistente, è di reingegnerizzare il modulo abitativo (LQ)per confrontare diversi modelli in termini di funzionalità, peso ed economicità. Questo lavoro viene svolto con particolare attenzione verso le chiusure verticali (resistenti all'abrasione ed al fuoco); inoltre, questo progetto deve tenere in considerazione fattori ambientali come vento, neve, ghiaccio e terremoto (se richiesto) garantendo la sicurezza ed il comfort per i lavoratori. L’LQ è modellato tramite SAP2000, il modello base è definito senza piattaforma d’atterraggio per l’elicottero e tiene conto dell’impiego di tre diversi tipi di pareti esterne. Il modello con minor spostamento, peso e costo è selezionato per ulteriori analisi. La piattaforma d’atterraggio è posizionata sul modello selezionato e l'analisi viene ripetuta. Tutte le travi e le colonne hanno superato il controllo delle sollecitazioni massime sotto le combinazioni di carico ULS, SLS e ALS secondo NORSOK N-004. L'analisi di sollevamento viene eseguita per garantire la sicurezza del modulo durante il sollevamento e il posizionamento sulla piattaforma. Dopo la verifica del modello, viene creata una matrice di valutazione per mostrare la differenza nelle prestazioni dei materiali installati sul LQ. Il quartiere abitativo selezionato è una possibile struttura leggera, un modulo a basso costo con elevate prestazioni di materiali contro il fuoco e il carico esplosivo.
Living quarters for offshore application
VELAYUDHAM, PUVIYARASAN
2017/2018
Abstract
Construction is a continuously evolving field. Offshore construction is a representative example of the change made by human. It goes without saying offshore construction unlocked a completely new field with great challenges. Offshore construction covers a wide spectrum of facilities built away from the shore. Constructions are made on the shore and transported to the site and placed into their final position with use of cranes. Likewise living quarters with helideck are manufactured on the shore unlike the normal onshore construction it has to be made with special requirements from the Norwegian codes such as NORSOK, DNV and ISO. The aim of this work, starting from an existing design, is to re-engineering the LQ to compare different models in terms of functionality, weight and cost effectiveness. This work is carried out with specific focus to the different external walls (blast and fire resistant); additionally, this design shall take into consideration the environmental conditions such as wind, snow, ice and earthquake (if effective) and provide the safety, security and comfort for workers. Living quarter is modelled in finite element program SAP2000, basic model is created without helideck for three different external walls. Model with less displacement, low weight and low cost is selected for further analysis. Helideck is positioned on the selected model and analysis are repeated. All the beams and columns passed the stress capacity check under ULS, SLS and ALS load combinations according to NORSOK N-004. Lifting analysis is performed to ensure the safety of the module during the lifting and positioning on platform. After the verification of the model, evaluation matrix is made to show the difference in performances of the materials installed on the LQ. Selected living quarter is a possible light weight structure, low cost module with high performances of materials against fire and blast loading.| File | Dimensione | Formato | |
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2018_4_Velayudham_Puviyarasan.pdf
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https://hdl.handle.net/10589/140494