Design of marine structures with improved safety for environment

Klanac, Alan; Varsta, Petri

doi:10.1016/j.ress.2010.06.016

Cited by 18 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alan Klanac and Petri Varsta [10] in their paper espoused a design approach to marine structures with emphasis on safety for the environment; investment costs; risk spread amongst the maritime stakeholders. They described an optimization approach, the 'Game Theory', where the overall design of a marine structure will 'satisfy the nondominance, efficiency and fairness'.…”

Section: Literature Reviewmentioning

confidence: 99%

Analysis and Design of Steel a Floating Pontoon Jetty for Use in the Coastal Waters of Nigeria

Igwe¹,

Ajoko²

2020

EJERS

View full text Add to dashboard Cite

Floating pontoons are semi-permanently moored structures on a water body to provide boarding access to commuters. The decision to develop such structures was informed by the need to provide berthing access to river crafts that operate on the coastal waters of Bayelsa State, Nigeria. In this project, a floating pontoon, a gangway, and other supporting structures like scantlings and spud pillars, were designed to meet the needs and environmental requirements of the area. Standards consulted are the DNV Rules for the classification of ships; DNV Rules for the classification of Floating Docks; ABS Rules for Building and Classing Steel Barges; and other relevant Nigeria and Imo standards. The pontoon designed has dimensions: 13 x 12 x 4.8 m; gross tonnage of 15 tonnes; 2nos. of dry tanks of capacity 17.2 m³ and 6nos. of manholes of 450 x 550 mm. The strength of materials analysis was limited to the floating pontoon for limitations of space for this paper. The pontoon and scantling design has been done based on the worst condition of design pressure which is for the maximum submersion draft. Normal grade steel of yield strength 235 MPa is chosen for all members except the pontoon girders, frames and pillars. This is to reduce the material scantlings and to ensure higher strength with lesser scantlings. Longitudinal framing is adopted in the pontoons as the pontoon structure needs more strength in the longitudinal direction.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Analysis and Design of Steel a Floating Pontoon Jetty for Use in the Coastal Waters of Nigeria

Igwe¹,

Ajoko²

2020

EJERS

View full text Add to dashboard Cite

show abstract

“…Thus, MADM [23][24][25][26][27] can be introduced to compare and rank a finite number of schemes. Moreover, there are several stakeholders involved in the shipping safety issue, including ship owners and operators, cargo owners, governments, and the public, 28 and their perceptions of shipping risk and appetites on safety investment are always not in the same level. Stakeholders can participate in decision process by means of decision-making committee which consists of representatives of them.…”

Section: Literature Reviewmentioning

confidence: 99%

“…So, the presented problem in this article is a typical MAGDM. [28][29][30] In fact, after shipping investment schemes are put forward, the practical implementation of the schemes may show different states under different external circumstances, like policy environment, financial condition, or evolution of navigational conditions. Look at it this way, this problem is also a risk-based decisionmaking (RBDM).…”

Section: Literature Reviewmentioning

confidence: 99%

“…In order to meet the stochastic dominance rule, an advanced version of prospect theory-CPT was proposed, 34,35 and risk-based decisionmaking based on CPT has been applied in many works. 25,36 According to CPT, by comparing and measuring interval numbers and triangular fuzzy numbers (TFNs) in the same dimension, 27,28 attribute values in hybrid forms are edited as gains or losses relative to reference points in the first stage. In the second stage, the value function and cumulative probability weighting function given by CPT are introduced to calculate prospect values and to fine probabilities associated with ''input'' and ''output'' attributes for schemes, respectively.…”

Section: Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Decision-making of investment in navigation safety improving schemes with application of cumulative prospect theory

Wang

Liu

Yin

2018

Proceedings of the Institution of Mechanical Engineers, Part O:

View full text Add to dashboard Cite

Navigation safety improving investment aims at mitigating risk and improving safety of shipping system, while decisionmakers' attitudes toward the uncertainty of shipping safety possess a characteristic of ''bounded rationality.'' To study the tendency of shipping safety investment decision-making with different risk perception and appetite, a decision-making method based on cumulative prospect theory is proposed in this article. First, we extract the decision attributes through analyzing the factors affecting shipping safety investment. Then, according to cumulative prospect theory, the value function and the probability weighting function for calculating cumulative prospect values of shipping investment attributes are given. Under the risk-based multi-attribute group decision-making framework, linear programming model and projection method are introduced to aggregate the weights of attributes and decision-makers, respectively. Furthermore, through a case study, the proposed methodology is utilized in Three Gorges Dam area, and the desirable safety investment scheme is determined from a set of candidate alternatives. The case study shows not only validity and feasibility of the decision-making approach but also the mechanism of shipping safety investment decision-making with consideration of the behavior characteristics of decision-makers such as reference dependence, risk appetite distortion, and loss aversion.

show abstract

“…Meeting such significant challenges requires the use of a holistic, multi-disciplinary and multi-objective design optimization platform from the earliest design stages in the traditional ship design process. The creation of such a platform was, to some extent, ad-dressed during some former research-based EU-funded projects such as IMPROVE [1] (for examples see [2][3]), and BESST [4] (see [5] for more).…”

Section: Introductionmentioning

confidence: 99%

An integrated framework for ship structural optimisation in contract design phase

Bayatfar

Mishael

Warnotte

et al. 2019

AnnUGalShipBuilding

View full text Add to dashboard Cite

This paper demonstrates the implementation of an integrated workflow for the finite element-based structural assessment/optimization of a 3D midship segment of RoPax vessel within the contract design phase. Commercial software such as AVEVA Marine ® , ANSYS ® and modeFRONTIER ® and newly developed in-house tools/modules have been integrated under an automated iterative routine. The structural optimisation carried out with an aim to reduce the structural weight of the ship with least value for vertical centre of gravity. Constraints implemented in the optimization include relevant BV rules and shipyard requirements.The work is performed within the framework of European Union's HOLISHIP (2016-2020) project.

show abstract

Design of marine structures with improved safety for environment

Cited by 18 publications

References 20 publications

Analysis and Design of Steel a Floating Pontoon Jetty for Use in the Coastal Waters of Nigeria

Analysis and Design of Steel a Floating Pontoon Jetty for Use in the Coastal Waters of Nigeria

Decision-making of investment in navigation safety improving schemes with application of cumulative prospect theory

An integrated framework for ship structural optimisation in contract design phase

Contact Info

Product

Resources

About