集中载荷作用下悬索跨越管道的应变响应
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摘要
为了研究悬索跨越管道受集中载荷作用时的响应情况,通过相似实验和有限元仿真相互验证的方法,搭建了悬索跨越管道相似实验平台,建立了悬索跨越管道有限元仿真模型,进行了无集中载荷、集中载荷作用在管道不同位置处的应变数据实验测试和仿真模拟,分析了每种状态下管道上方的应变分布规律,结果表明:无集中载荷时,整个悬索跨越管道上方的应变呈"W"状分布,两端应变数值最大;集中载荷作用在管道两端时,对整个管道上方的应变分布规律影响不大;集中载荷作用在管道1/4、1/2和3/4位置处时,会导致整个管道的应变发生较大变化。
In order to study the response of suspension pipeline under concentrated load,through the mutual verification method of the similar experiment and the finite element simulation,the similar experiment platform for suspension pipeline was built,and the finite element simulation model of suspension pipeline was established,then the strain data of experimental tests and simulations were carried out under no concentrated load and concentrated load at different positions of the suspension pipeline,and the strain distribution of the pipeline in each state was analyzed. The results show that when there is no concentrated load,the strain of the whole suspension pipeline is distributed in a "W"shape,and the strain value at both ends of the pipeline is the maximum; when the concentrated load acts on both ends of the pipeline,it has little influence on the strain distribution of the entire pipeline; when the concentrated load acts on 1/4,1/2 and 3/4 positions of the pipeline,the strain of the whole pipeline will change greatly.
In order to study the response of suspension pipeline under concentrated load,through the mutual verification method of the similar experiment and the finite element simulation,the similar experiment platform for suspension pipeline was built,and the finite element simulation model of suspension pipeline was established,then the strain data of experimental tests and simulations were carried out under no concentrated load and concentrated load at different positions of the suspension pipeline,and the strain distribution of the pipeline in each state was analyzed. The results show that when there is no concentrated load,the strain of the whole suspension pipeline is distributed in a "W"shape,and the strain value at both ends of the pipeline is the maximum; when the concentrated load acts on both ends of the pipeline,it has little influence on the strain distribution of the entire pipeline; when the concentrated load acts on 1/4,1/2 and 3/4 positions of the pipeline,the strain of the whole pipeline will change greatly.
引文
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10 陈同彦,贾春磊.Ansys程序有限元结构分析方法在悬索式管桥体系中的应用[J].石油工程建设,2005,31(2):25-26Chen Tongyan,Jia Chunlei.Discussion on structural analysis with finite element analysis program ANSYS for suspension pipe bridge system[J].Petroleum Engineering Construction,2005,31(2):25-26
2 Yau J D,Yang Y B.Vibration of a suspension bridge installed with a water pipeline and subjected to moving trains[J].Engineering Structures,2008,30(3):632-642
3 高健,王德国,何仁洋.基于应变的悬空管道性能分析[J].管道技术与设备,2011(6):13-16Gao Jian,Wang Deguo,He Renyang.Performance analysis of the suspended pipeline based on strain[J].Pipeline Technique and Equipment,2011(6):13-16
4 王圣世,张宏.大跨度悬索式管桥风振响应分析[J].油气储运,2003,22(1):27-29Wang Shengshi,Zhang Hong.Wind vibration response analysis of long-span suspension pipeline bridge[J].Oil&Gas Storage and Transportation,2003,22(1):27-29
5 Cavdar O,Bayraktar A,Adanur S.Stochastic finite element analysis of a cable-stayed bridge system with varying material properties[J].Probabilistic Engineering Mechanics,2010,25(2):279-289
6 彭星煜,梁光川,张鹏,等.人工爆破地震作用下输气管道动力响应分析[J].天然气工业,2012,32(11):81-84Peng Xingyu,Liang Guangchuan,Zhang Peng,et al.Dynamic response analysis of gas pipeline under the artificial blasting earthquake effect[J].Natural Gas Industry,2012,32(11):81-84
7 李茂华,石磊彬,钟威,等.内外压热应力影响下西气东输二线长输管道变形的有限元分析[J].天然气工业,2013,33(8):119-124Li Maohua,Shi Leibin,Zhong Wei,et al.The finite element analysis and calculation of pipeline stress and strain under the effect of heat stress and internal or external pressure in the West-to-East China gas pipelineⅡ[J].Natural Gas Industry,2013,33(8):119-124
8 陈星烨,马晓燕,宋建中.大型结构试验模型相似理论分析与推导[J].长沙交通学院学报,2004,20(1):11-14Chen Xingye,Ma Xiaoyan,Song Jianzhong.Similar theoretical analysis and derivation of large-scale structural testing model[J].Journal of Chang-sha Communications University,2004,20(1):11-14
9 Hong A L,Ubertini F,Betti R.Wind analysis of a suspension bridge:Identification and finite-element model simulation[J].Journal of Structural Engineering-ASCE,2011,137(1):133-142
10 陈同彦,贾春磊.Ansys程序有限元结构分析方法在悬索式管桥体系中的应用[J].石油工程建设,2005,31(2):25-26Chen Tongyan,Jia Chunlei.Discussion on structural analysis with finite element analysis program ANSYS for suspension pipe bridge system[J].Petroleum Engineering Construction,2005,31(2):25-26