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Reduction-Based Model Updating of a Scaled Offshore Platform Structure
Li, Hui1; Ding, Hua2
AbstractThis paper attempts to develop a reduction-based model updating technique for jacket offshore platform structure. A reduced model is used instead of the direct finite-element model of the real structure in order to circumvent such difficulties as huge degrees of freedom and incomplete experimental data that are usually civil engineers' trouble during the model updating. The whole process consists of three steps: reduction of FE model, the first model updating to minimize the reduction error, and the second model updating to minimize the modeling error of the reduced model and the real structure. According to the performance of jacket platforms, a local-rigidity assumption is employed to obtain the reduced model. The technique is applied in a downscale model of a four-legged offshore platform where its effectiveness is well proven. Furthermore, a comparison between the real structure and its numerical models in the following model validation shows that the updated models have good approximation to the real structure. Besides, some difficulties in the field of model updating are also discussed.
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WOS IDWOS:000273673500001
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Li, Hui,Ding, Hua. Reduction-Based Model Updating of a Scaled Offshore Platform Structure[J]. JOURNAL OF ENGINEERING MECHANICS-ASCE,2010,136(2):131-142.
APA Li, Hui,&Ding, Hua.(2010).Reduction-Based Model Updating of a Scaled Offshore Platform Structure.JOURNAL OF ENGINEERING MECHANICS-ASCE,136(2),131-142.
MLA Li, Hui,et al."Reduction-Based Model Updating of a Scaled Offshore Platform Structure".JOURNAL OF ENGINEERING MECHANICS-ASCE 136.2(2010):131-142.
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