899
26 64 899-9042020 10 AIJ J. Technol. Des. Vol. 26, No.64, 899-904, Oct., 2020
DOI https://doi.org/10.3130/aijt.26.899

BUCKLING STRENGTH OF LATTICED DOMES OF GRID-PURLIN WITH BEAMS
1 2 3 4 5

Keywords: Space structure, Lattice Domes, Grid-purlin, Buckling
Yuki TERAZAWA 1 Koichi SUMA 2 Masanobu IWANAGA 3 Satoshi MAEHARA 4 Toru TAKEUCHI 5
Grid-purlin system composed of RHS members are known to be effective to prevent buckling of the welded beams. In this paper, lattice dome composed of radial beams and welded grid purlins (Grid purlin shell dome) are studied. The linear, elastic, and elasto-plastic buckling strength of Grid purlin shell domes are analyzed using detailed FEM analyses. Their results are compared with the shell theory with continuum analogy and easy design approaches are investigated.
*1 152-8550 2-12-1 *2 *3 *4 SDP *5
*1 Assistant Prof., Dept. Arch. & Build. Eng., Tokyo Institute of Technology, Dr. Eng.
*2 Graduate Student, Dept. of Arch. & Building. Eng., Tokyo Institute of Technology *3 Kyushu Daiichi Kogyo Co., Ltd. *4 Frontier SDP Co., Ltd. *5 Prof., Dept. Arch. & Build. Eng., Tokyo Institute of Technology, Dr. Eng.

1 4 2 5 3 Keywords: Space structure, Lattice Domes, Grid-purlin, Buckling
Yuki TERAZAWA 1 Koichi SUMA 2 Masanobu IWANAGA 3 Satoshi MAEHARA 4 Toru Takeuchi 5 Grid-purlin system composed of RHS members are known to be effective to prevent buckling of the welded beams. In this paper, lattice dome composed of radial beams and welded grid purlins (Grid purlin shell dome) are studied. The linear, elastic, and elasto-plastic buckling strength of Grid purlin shell domes are analyzed using detailed FEM analyses. Their results are compared with the shell theory with continuum analogy and easy design approaches are investigated.

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2 3
30 m 4 m
4) 1)


PB1-modelPB1-model
PBR1-model 4
-125×75×2.3 ()
PB-model +
PB1-model +()
PBR1-model +()
PB-S75-model -75×75×2.3 PB-S125-model -125×75×2.3 PB-S150-model -150×75×2.3


152-8550 2-12-1
*1 Assist Professor, Dept. Arch. & Build. Eng., Tokyo Institute of Technology, Dr. Eng. (O-okayama 2-12-1, Meguro-ku, Tokyo 152-8550)
*2 *2 Graduate Student, Dept of Arch. And Building. Eng., Tokyo Institute of Technology *3 *3 Kyushu Daiichi Kogyo Co., Ltd. *4 SDP *4 Frontier SDP Co., Ltd. *5 () *5 Professor, Dept. Arch. & Build. Eng., Tokyo Institute of Technology, Dr. Eng.
BUCKLING STRENGTH OF LATTICED DOMES OF GRID-PURLIN WITH BEAMS
900

y F 1.1
258.5 N/mm2u 1.1 440 N/mm2
3
3.1
0
2
3.2
N


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6 (a) P-model (b) PB-model (c) PB1-model (d) PBR1-model











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190
-(c)(d)(PB-S125-
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0
10
20
30
40
50
60

f ( kN
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15
p

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1
2
3
4
5
6
7
8

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0.2
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1


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B-model
PBR1-model


kANA
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0.9


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f ( kN
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(mm)
flin
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per eig rev

f ( kN
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flin
(mm)

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(12)

M y/M
904


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Ny
2
fcrS
pla pla S
1 1.29 0.6
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H 1
()pp.1077-1080 2019.
2) 4 pp.35-602016. 3) ABAQUS/Standard 2017 4) http://ksdi.jp/ropponmatsufukugouaccessed 2020.3.25 5) 3 pp.232-2362010. 6) 2 pp.21-23 5 pp.139-141
5 pp.149-1512018.
25
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