| 钢管桁架结构在系缆力作用下的疲劳寿命分析 |
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| 引用本文： | 李元青,王安华,王秋忆.钢管桁架结构在系缆力作用下的疲劳寿命分析[J].水运工程,2016(10):80-85. |
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| 作者姓名： | 李元青 王安华 王秋忆 |
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| 作者单位： | 中交水运规划设计院有限公司,北京 100007,中交水运规划设计院有限公司,北京 100007,中交水运规划设计院有限公司,北京 100007 |
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| 摘 要： | 外海开敞大型原油码头系缆墩采用全钢钢管桁架结构时，利用计算系缆力研究其疲劳寿命，往往使计算疲劳寿命偏短，与实际情况偏离较大。目前对实测系缆力的分析研究较少，无规律可循。对日照港岚山港区30万吨级原油码头扩建工程的实测系缆力数据进行分析研究，找出系缆力的分布规律，并根据系缆力的概率分布分析系缆墩管节点的疲劳损伤。分析结果表明：结构疲劳损伤最大的为中层管节点，系缆力对系缆墩疲劳损伤影响较小，仅为10-4数量级。
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| 关 键 词： | 实测系缆力 全钢钢管桁架结构 疲劳损伤 疲劳寿命 |
Analysis of fatigue life for steel tubular frame marine structure by the mooring load |
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| LI Yuan-qing,WANG An-hua and WANG Qiu-yi.Analysis of fatigue life for steel tubular frame marine structure by the mooring load[J].Port & Waterway Engineering,2016(10):80-85. |
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| Authors: | LI Yuan-qing WANG An-hua and WANG Qiu-yi |
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| Institution: | CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China,CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China and CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China |
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| Abstract: | For all-steel tubular frame mooring structure of large offshore oil wharf,the calculated fatigue life using calculated mooring load will be short and be deviated from the actual situation.Currently there are fewer researches on the analysis of the measured mooring load,and they are disorder.This paper analyzes actual measuring mooring load of 300 000 DWT crude oil wharf expansion project in Ri-zhao port Lan-shan harbor,and finds out the probability law of distribution for mooring load and analyzes the fatigue damage of the tubular nodes.The analysis results show that the worst fatigue damage nodes are middle tube nodes,and mooring load has little influence on fatigue damage to all-steel tubular mooring pier,only 10-4 orders of magnitude. |
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