Cut-off Yield Line Theory in Minimum Weight Design of Hatch Cover

• Main Authors: Wei-Yu Lu, 盧威宇
• Other Authors: W.H.Wang
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/80121648615230731554

碩士 === 國立海洋大學 === 造船工程學系 === 83 === Recently,the inelastic bending analysis in reinforced concrete slab before collapse has been undertaken extensively by using the yield line theory issued by K. W. Johanson in 1962. The author intends using the self-developed cut-off method to rectangular hatch cover plate so as to induce the stiffeners layout principe for establishing the optimal design algorithm. The sequential unconstrained minimization technique (SUMT) would be used to search the optimal design variables of plate stiffeners combination hatch cover structure , so that a couple of tens percent of the weight of the original hatch cover can be reduced while the original one was designed by classical method. To validate the optimal design results , the comparison of maximum stress and maximum deflection between the originalhatch cover structure and the new designed one under the same prescribed loads would be done by the finite element analyses.