摘要
针对多体耦合的长大弯曲型过江管道沉放系统进行沉放施工时,过多的履带吊和驳船数量会大幅度增加施工难度、提高施工成本的问题,提出一种基于全耦合的时域分析方法,结合管道、Winch、6Dbuoy和Shape等理论,利用大型水动力分析软件OrcaFlex建立各沉放方案在沉放过程中的数值分析模型:首先利用现场实测结果与现场施工沉放方案的数值模拟结果进行对比,验证了本数值模拟方法的准确性;然后对现场施工沉放方案和两种优化方案进行方案比选,对比各方案在沉放过程中管道的动力响应、应力分布、锚索和吊缆张力,并进行各方案关键参数敏感性对比分析;最后提出了相应的施工建议。
The excessive numbers of crawler cranes and barges will greatly increase the construction difficulty and cost during the sinking construction.Based on the fully coupled time domain analysis method,Pipeline theory,and 6D buoytheory,etc.,the numerical analysis model(including the site construction model and two optimization models)of the pipeline immersion system was established via the large hydrodynamic analysis software OrcaFlex.The results of field measurement and numerical simulation were compared,and the comparison results were very well,all verifhing the accuracy of the numerical simulation method.The dynamic response and stress distribution of the pipeline,and the tension of the cables were investigated,and the sensitivity of key parameters was discussed.
作者
肖扬洋
巫志文
牟礼旺
林平均
丁迪
姚启联
XIAO Yang-yang;WU Zhi-wen;MOU Li-wang;LIN Ping-jun;Ding Di;YAO Qi-lian(School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education,Guangxi University,Nanning 530004,China;Guangdong Key Laboratory of Marine Civil Engineering,Sun Yat-sen University,Guangzhou 510275,China;School of Civil Engineering,Sun Yat-sen University,Guangzhou 510275,China;Guangxi Construction Engineering Group Construction General Contractor Co.,Ltd.,Nanning 530012,China)
出处
《桂林理工大学学报》
CAS
北大核心
2022年第4期878-886,共9页
Journal of Guilin University of Technology
基金
国家自然科学基金项目(51808136,51708136,515781640)
广西自然科学基金项目(2018JJB160058)
广西科技基地和人才专项基金项目(2019AC20264)。
关键词
方案对比分析
长大弯曲型过江管道
沉放系统
多体耦合
现场实测
动力响应
scheme comparison analysis
long-large-curved river-crossing pipeline
immersion system
coupled multi-body
field measurement
dynamic response