| 等壁厚钢管桩横向焊缝应力集中系数的数值模拟 |
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| 引用本文： | 齐赵敏,李怡,段磊,张一博,王召兵. 等壁厚钢管桩横向焊缝应力集中系数的数值模拟[J]. 港工技术, 2012, 49(4): 23-26,37 |
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| 作者姓名： | 齐赵敏 李怡 段磊 张一博 王召兵 |
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| 作者单位： | 1. 重庆交通大学,重庆,400074
2. 唐山曹妃甸矿石码头有限公司,河北唐山,063200 |
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| 基金项目： | 基金项目：重庆市科委自然科学基金（CSTC2010BB7084） |
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| 摘 要： | 大型海洋工程结构多常用钢管桩,在钢管桩的制作和安装过程中通常会产生环向对接焊缝,由管节偏位引起的环向焊缝应力集中现象是焊缝疲劳热点应力评估和焊缝疲劳安全分析的重要影响因素.通过实用近似分析方法,研究在轴向拉力和平面内弯矩单独作用下等壁厚对接焊缝应力集中间题,得出等壁厚拉弯构件对接焊缝应力集中系数的近似计算公式；根据对钢...
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| 关 键 词： | 钢管桩 横向焊缝 管节偏位 应力集中系数 热点应力 有限元方法 平面内弯矩 轴向拉力 |
Numerical Simulation for Stress Concentration Factor at Cross Weld of Steel Pipe Piles in Identical Wall Thickness |
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| Qi Zhaomin , Li Yi , Duan Lei , Zhang Yibo , Wang Zhaobing. Numerical Simulation for Stress Concentration Factor at Cross Weld of Steel Pipe Piles in Identical Wall Thickness[J]. Port Engineering Technology, 2012, 49(4): 23-26,37 |
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| Authors: | Qi Zhaomin Li Yi Duan Lei Zhang Yibo Wang Zhaobing |
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| Affiliation: | 1.Chongqing Jiaotong University, Chongqing 400074, China; 2. Tangshan Caofeidian Ore Harbor Co., Ltd., Tangshan Hebei 300222, China} |
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| Abstract: | 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. |
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| Keywords: | steel pipe pile cross weld socket misalignment stress concentration factor hotspot stress finite element method in-plane bending moment axial tension |
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