船舶结构设计准则和衡准的研究进展.pdf

Research Progress of Design Principles andCriteria of Ship StructuresZHAN Zhi-hu1,3,WU Wen-wei2(1.Shanghai Rules&Research Institute of China Classification Society,Shanghai 200135,China;2.China Ship Scientific Research Center,Wuxi 214082,China;3.Ships and Offshore InstallationsStructural Safety Laboratory,Shanghai 200135,China)Abstract:This paper presents a review of the research progresses in the design principles and criteriaof ships and offshore structures achieved in IACS,IMO and ISO/TC8 in the past several years,withconsideration of the development of new rules and guidelines of IACS members and structural safetyregulations of regional maritime authorities.The influences of digital twin,operation data,reliability,risk assessment,and human factors in the design on the structural design criteria are discussed.Eventually the suggestions on the development direction of future maritime regulations are given.Key words:design principle;design criterion;reliability;risk assessment;human factorCLC number:U661.4Document code:Adoi:10.3969/j.issn.1007-7294.2023.06.0130 IntroductionThe principles and criteria of ship structural design involve the relevant scientific principles,engineering application methods and engineering application scenarios in the whole life cycle ofhull structure design,construction and operation,and have always attracted the attention from themaritime industry.The International Ship&Offshore Structures Congress has specially set up acommittee(ISSC IV.1)to follow up this subject.International Maritime Organization(IMO),International Association of Classification Societies(IACS)and the International Organization for Standardization(ISO)have always had relevant issues and project studies.This paper summarizes the development of rules and regulations on maritime structure sincethe release of ISSC 2018 committee report,mainly focusing on the progresses made by InternationalAssociation of Classification Societies(IACS),International Maritime Organization(IMO),International Organization for Standardization(ISO)and major classification societies of IACS,and covering some current hot topics.1 Latest development in rules and standards1.1 Development of IACS relevant work in design principleStructural rules for ships and offshore installations are developing with the trend of applying第27卷第6期船舶力学Vol.27 No.62023年6月Journal of Ship MechanicsJun.2023Article ID：1007-7294（2023）06-0947-12Received date:2022-12-25Foundation item:Supported by the Project of Ministry of Industry and Information Technology（CB05N20）Biography:ZHAN Zhi-hu(1970-),male,Ph.D.,corresponding author,E-mail:;WU Wen-wei(1969-),male,professor.goal and risk based methods.Common Structural Rules(CSR for BC&OT)was developed by IACSbased on the IMO GBS requirement，and updatedversions1are published annually by the continuous work of CSR maintenance team.In addition,several project teams2-5have been established tofocus on hull structural safety issues,includingwhipping on container ships,wave data investigations,etc.Main project teams in IACS Hull Panelare listed in Tab.1.Although the above research results haven t been published now,they will have a significantimpact on marine industry after they have become the unified requirements or recommendations ofIACS.For example,based on the current PH40 investigations(comparison with directly calculatedresults based on current Rec.34),it can be concluded that for smaller ships the results for the bending moment will on average be in line with the current rule requirements,for larger ships they mightbe higher.This will have an effect on ship structure design criteria.1.2 Development of IMO relevant work in design principleSince 2017,the Maritime Safety Committee(MSC)of IMO has held five sessions6-10,the maintopics of which concern design criteria,including autonomous ships,goal-based new ship construction standards,goal-based standards safety level approach,polar operation manual,formal safetyassessment,ship design and construction etc.IMO takes the first step to address regulatory scopingexercise(RSE)on Maritime Autonomous Surface Ships(MASS),GBS Verification Guideline Revisions,including goal-based Safety Level Approach(SLA),interim guidelines agreed in principleduring MSC 99.During MSC 100,four degrees of autonomy of unmanned MASS in RSE were approved to take into force,and interim guidelines for development and application of the IMO goal-based standards safety level approach was also approved by the Committee11.During MSC 101,therevised generic guidelines for developing IMO goal based standards was approved by the Committee12,the guidance for navigation and communication equipment intended for use on ships operating in polar waters was approved by the Committee,revised guidelines on alternative design and arrangements for SOLAS Chapters II-1 and III and new safe mooring requirements were also adoptedduring MSC 102.The MSC completed RSE for the use of MASS and approved a circular providingthe outcome13.