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《Port Engineering Technology》 2012-04
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Numerical Simulation for Stress Concentration Factor at Cross Weld of Steel Pipe Piles in Identical Wall Thickness

Qi Zhaomin1,Li Yi1,Duan Lei2,Zhang Yibo1,Wang Zhaobing1(1.Chongqing Jiaotong University,Chongqing 400074,China;2.Tangshan Caofeidian Ore Harbor Co.,Ltd.,Tangshan Hebei 300222,China)  
Steel pipe piles are widely applied in large marine structure projects.Hoop butt-jointed welds are usually generated during the fabrication and installation of steel piles.The stress concentration at hoop butt-jointed welds caused by socket misalignment is an important factor which affects the hotspot stress evaluation and the safety analysis of fatigue welds.By the approximate analysis method,we research the stress concentration at the butt-jointed weld between the steel pipe piles in identical wall thickness under axial tension or in-plane bending moment,and furthermore develop an approximate formula for the stress concentration factor at the butt-jointed weld between the bending structures in identical wall thickness.According to a trial calculation of steel pipe piles model,the result by the approximate formula is very close to the value by ANSYS finite element numerical simulation,which will provide references for similar projects.
【Fund】: 重庆市科委自然科学基金(CSTC 2010BB7084)
【CateGory Index】: TU473.1
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