车辆甲板次要构件多轮印载荷等效与简化方法  

Equivalence and simplification of multi-wheel loading on secondary member of vehicle deck

作　　者：武卓威 刘俊[1] 王浩 张文强 WU Zhuowei;LIU Jun;WANG Hao;ZHANG Wenqiang(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Nansha Survey Office,Guangzhou Branch,China Classification Society,Guangzhou 511458,China;Lianyungang Maritime Safety Administration of P.R.C.,Lianyungang 222042,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]中国船级社广州分社南沙检验处,广东广州511458 [3]中华人民共和国连云港海事局,江苏连云港222042

出　　处：《中国舰船研究》2024年第5期166-171,共6页Chinese Journal of Ship Research

摘　　要：[目的]滚装船车辆甲板承载的轮印载荷数量、作用范围以及与甲板构件的位置关系均不固定,对该类结构进行的分析通常较为繁琐,因此有必要对该类载荷的合理等效和简化进行研究。[方法]以车辆甲板次要构件为研究对象,基于多跨梁模型,分别以局部分布力和等效集中力模拟轮印载荷,对多种结构响应进行对比和分析;随后,将同时作用的多个轮印载荷均转化为集中力时的结构响应变化情况进行分析。[结果]结果表明,对于常见尺寸的车辆甲板,典型轮印载荷的上述等效简化偏安全,且不会引起结构响应的显著变化。[结论]从工程应用角度提出了一种多轮印载荷的合理等效方法,对简化车辆甲板结构设计和校核工作具有积极意义。[Objectives]As wheel loading on the vehicle decks of ro-ro ships may introduce difficulties for structural analysis due to the uncertainty of their quantities,ranges,and positions,it is necessary to study the equivalence and simplification of such loads.[Methods]Using a multi-span beam model as an idealized vehicle deck secondary member,wheel loading is simulated by distributed load and concentrated force respectively,and several structural responses are compared and analyzed.Furthermore,an analysis is made of the change in structural response after multiple wheel loadings have been simultaneously transformed into concentrated force.[Results]The calculation results suggest that for vehicle decks with an ordinary arrangement,such equivalence and simplification tends to be safer and will not bring significant changes to the structural response.[Conclusions]Based on the above conclusions,a reasonable equivalent multi-wheel loading method is provided for engineering application,thus contributing to the design simplification and strength verification of vehicle decks.

关 键 词：车辆甲板 多轮印载荷 次要构件 结构响应 

分 类 号：U663.6[交通运输工程—船舶及航道工程]