|Table of Contents|

Study on Force Mechanism and Numerical Simulation of Overall Stability of Stiffened Panel with Plate Rib(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年06期
Page:
64-73
Research Field:
结构工程
Publishing date:

Info

Title:
Study on Force Mechanism and Numerical Simulation of Overall Stability of Stiffened Panel with Plate Rib
Author(s):
ZHAO Qiu1;  CHEN Peng1;  LIN Zhi-ping2; 3;  ZHANG Jun-chao4
(1. College of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China; 2. Fujian Provincial Expressway Technology Consulting Co., Ltd., Fuzhou 350001, Fujian, China; 3. Fujian Provincial Key Laboratory of Expressway Engineering, Xiamen 361001, Fujian, China; 4. Fuzhou Planning & Design Research Insititute Group Co., Ltd., Fuzhou 350108, Fujian, China)
Keywords:
stiffened panel with plate rib;  overall stability;  numerical simulation;  failure mode;  stress-displacement curve;  force mechanism
PACS:
TU311
DOI:
10.19815/j.jace.2021.08087
Abstract:
The finite element model for the overall stability analysis of the stiffened panel with plate rib under compression was established by using beam element and shell element respectively. The initial geometric defects and welding residual stress were considered and verified by the corresponding test results, and then the overall stability simulation difference of the stiffened panel with plate rib under compression between the beam and shell element was obtained. Using the verified numerical simulation method, the force mechanism of stiffened panel with plate rib in different bending instability directions was studied. The results show that the shell element can better restore the overall stability of the stiffened panel with plate rib. The maximum relative error between the shell finite element model and the test specimen is 4.2%, and the average relative error is 1.48%. The maximum bearing capacity relative error between the beam element model and the long(medium long)column test specimen is 5.4%, the average relative error is 1.92%. Although the bearing capacity relative error between the beam element model and the short column test specimen is only 0.7%, the fitting of the stress-displacement curve is relatively poor because the plastic instability of the plate can not be considered. The failure characteristics for the overall stability of stiffened panels with different bending instability directions are different. For the overall stable members of stiffened panel with bending on the side of the plate rib, when the edge of the stiffened panel is pressed to the material yield strength and the edge of the plate rib is pulled to the yield strength, the whole member reaches its bearing limit. For the overall stable member bending on the side of the stiffened panel, when the edge of the stiffened panel reaches the material yield strength, the whole member reaches its bearing limit. For the stiffened panel with ribs constituting the top plate of steel box girder in practical engineering, the deformation towards the side of plate ribs should be avoided in fabrication.

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Last Update: 2022-12-20