scholarly journals Comparative Study of Structural Geometric to the Ultimate Strength on Fixed Jacket Platform

2018 ◽  
Vol 177 ◽  
pp. 01007
Author(s):  
Muhammad Alie Zubair Muis ◽  
Obednego Icon Yan Franchover ◽  
Baeda Achmad Yasir ◽  
Taufiqur Rachman ◽  
Juswan

The brace configuration plays an important role to the ultimate strength of fixed jacket platform. The braces against the combined load in vertical and horizontal direction. In the present study, the ultimate strength of the fixed jacket platform is analysed considering the shape of the structural geometric. Four types of brace configuration namely, K, N, X and Y are taken to be assessed. Dimensions of the structure are constant including properties and materials. The boundary conditions are assumed to be fixed at the bottom part. The Non-Linear Finite Element Analysis (NLFEA) is adopted to calculate the ultimate strength of the structure and those results of brace configuration are compared with one another and discussed in the present study.

2021 ◽  
Author(s):  
Nima Atashi

Waterstops are commonly used at cold joints in construction of liquid containing concrete structures. A common issue with application of waterstops, is their conflict with top layer of slab reinforcements. A common solution is to form an upturn part that raises the waterstop clear of the top slab bars. However, effects of these different types of construction joints on the performance of structures have not been investigated. To that end, full-scale wall-slab specimens, each representing a different type of construction joint, are built and tested under different monotonic and cyclic loadings. The performance of these specimens is compared with regards to first cracking, limit state capacity and leakage. Results of the tests show that conventional flat joint, behaves more rigidly compared to other types of joints. A non-linear finite element analysis of a typical wall-slab specimen, is also presented and its results are compared with the results of the experiments.


2021 ◽  
Author(s):  
Nima Atashi

Waterstops are commonly used at cold joints in construction of liquid containing concrete structures. A common issue with application of waterstops, is their conflict with top layer of slab reinforcements. A common solution is to form an upturn part that raises the waterstop clear of the top slab bars. However, effects of these different types of construction joints on the performance of structures have not been investigated. To that end, full-scale wall-slab specimens, each representing a different type of construction joint, are built and tested under different monotonic and cyclic loadings. The performance of these specimens is compared with regards to first cracking, limit state capacity and leakage. Results of the tests show that conventional flat joint, behaves more rigidly compared to other types of joints. A non-linear finite element analysis of a typical wall-slab specimen, is also presented and its results are compared with the results of the experiments.


Author(s):  
Jinju Cui ◽  
Deyu Wang

Container ships are widely used and their strength has always been the concern of designers and engineers. Additionally, container ships for a given size are of similar arrangements and structures because the containers are of same standards worldwide. So investigation into the strength of typical structures is meaningful. This paper focuses on the ultimate strength of typical longitudinal girders with openings locating between double bottoms which are subjected to longitudinal compression and have not been extensively studied yet. On one hand, the ultimate strengths of longitudinal girders with openings are calculated by Nonlinear Finite Element Analysis (NFEA), and effects of opening sizes, opening locations, boundary conditions and initial deflections are studied, and prediction expressions of ultimate strengths are proposed by varying opening sizes based on benchmarks of intact structures. On the other hand, uniform corrosion is introduced into these structures, and its influences on ultimate strength are also investigated. The results are representative and can be of reference values for similar structures.


Author(s):  
Giuseppe Catania ◽  
Silvio Sorrentino

In the Rayleigh-Ritz condensation method the solution of the equation of motion is approximated by a linear combination of shape-functions selected among appropriate sets. Extensive literature dealing with the choice of appropriate basis of shape functions exists, the selection depending on the particular boundary conditions of the structure considered. This paper is aimed at investigating the possibility of adopting a set of eigenfunctions evaluated from a simple stucture as a general basis for the analysis of arbitrary-shaped plates. The results are compared to those available in the literature and using standard finite element analysis.


2012 ◽  
Vol 28 ◽  
pp. e15-e16
Author(s):  
L.H.A. Raposo ◽  
L.C.M. Dantas ◽  
T.A. Xavier ◽  
A.G. Pereira ◽  
A. Versluis ◽  
...  

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