Study on ultimate bearing capacity of unconventional stepped deck in cruise ship

Yang YU; Hu GUO; Jianxing YU; Fucheng WANG; Lingbo ZHANG; Yefan SU

doi:10.19693/j.issn.1673-3185.02994

Chinese Journal of Ship Research, Volume. 18, Issue 6, 143(2023)

Study on ultimate bearing capacity of unconventional stepped deck in cruise ship

Yang YU^1,2, Hu GUO^1,2, Jianxing YU^1,2, Fucheng WANG^1,2, Lingbo ZHANG^1,2, and Yefan SU^1,2

¹State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, School of Civil Engineering, Tianjin University, Tianjin 300072, China

²Tianjin Key Laboratory of Port and Ocean Engineering, School of Civil Engineering,Tianjin University, Tianjin 300072, China

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Figures & Tables(15)

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Table 1. Results of convergence analysis

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Table 1. Results of convergence analysis

方案	网格数量N						极限承载力/kN	相对误差/%
方案	${N_{{\text{AB}}}}$	${N_{{\text{BN}}}}$	${N_{\text{G}}}$	${N_{{\text{HF}}}}$	${N_{{\text{HM}}}}$	${N_{{\text{SUM}}}}$	极限承载力/kN	相对误差/%
网格1	78	104	2	6	2	22 208	4 318	11.37
网格2	108	104	2	6	2	26 735	4 053	4.54
网格3	108	104	3	9	4	33 492	3 877
网格4	156	104	3	9	4	41 355	3 771	−2.73

Table 2. Comparison of ultimate strength between stepped deck and general deck
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Table 2. Comparison of ultimate strength between stepped deck and general deck
纵向压缩位移/cm 极限承载力/kN 塌陷中心深度/m
阶梯甲板 13.2 3 877 0.62
常规甲板 2.1 20 774 0.37

Table 3. Results of pillar strengthening

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Table 3. Results of pillar strengthening

支柱尺寸/mm	结构总重量/kg	极限承载力/kN	结构总重量增幅/%	极限承载力增幅/%
无支柱（原结构）	25 957	3 877
150×12	26 296	4 030	1.3	3.9
250×12	26 527	4 324	2.2	11.5
350×12	26 760	4 537	3.1	17.0

Table 4. Results of longitudinal girder strengthening

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Table 4. Results of longitudinal girder strengthening

T0层纵桁尺寸/mm	结构总重量/kg	极限承载力/kN	结构总重量增幅/%	极限承载力增幅/%
450×8/150×10（原结构）	25 957	3 877
750×8/300×10	26 379	5 264	1.6	35.8
1000×8/300×10	26 598	4 746	2.5	22.4
1200×8/300×10	26 772	5 034	3.1	29.8

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Yang YU, Hu GUO, Jianxing YU, Fucheng WANG, Lingbo ZHANG, Yefan SU. Study on ultimate bearing capacity of unconventional stepped deck in cruise ship[J]. Chinese Journal of Ship Research, 2023, 18(6): 143

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