冰激桥墩振动室内模型试验研究
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摘要
鉴于模型试验是研究冰激结构振动特点和机理的一种非常有效的方法和手段,以某桥墩为背景,通过一修正的动冰力模型试验相似律设计了一桥墩模型,应用DUT-1模型冰,模拟了不同冰速下冰-桥墩动力相互作用过程,并实测了冰力和桥墩各测点处的响应。进而得到了一些有价值的试验现象和试验结果,这将为寒冷区域实际冰工程的建设提供一定的借鉴意义,同时可为冰激结构振动的发展提供探索性的意义,电能够在一定程度上完善室内冰激振动模型试验。
As model test was an effective method to study the characteristics and mechanism of ice-induced vibration of structures,here,based on a modified similitude law,a laboratory test was performed for the simulation of ice-induced vibrations of a pier structure,where DUT-1 model of ice sheet was driven by a trailer at different velocities.Both the ice sheet time histories and the response of the pier were measured.According to the test phenomenon and measured results,some valuable conclusions were obtained.Therefore,this ice-induced pier vibration model test could provide references for the progress of real ice engineering in cold area,and was a suitable way to study ice-structure interactions and ice-induced vibration.
As model test was an effective method to study the characteristics and mechanism of ice-induced vibration of structures,here,based on a modified similitude law,a laboratory test was performed for the simulation of ice-induced vibrations of a pier structure,where DUT-1 model of ice sheet was driven by a trailer at different velocities.Both the ice sheet time histories and the response of the pier were measured.According to the test phenomenon and measured results,some valuable conclusions were obtained.Therefore,this ice-induced pier vibration model test could provide references for the progress of real ice engineering in cold area,and was a suitable way to study ice-structure interactions and ice-induced vibration.
引文
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[3]王鹤.动冰力模型试验模型律研究[D].天津大学,2003.
[4]黄淼,史清增,宋安.动冰力模型试验模型律研究[J].中国海上油气,2007,19(6):419-423.
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[7]Cornett A M,Timco G W.Ice loads on an elastic model of molikpaq[J].Applied Ocean Reasearch,1998:105-108.
[8]Palmer A,Johnstor I.Ice velocity effects and ice force scaling[C].Proceedings of the IUTAM Symposium,2000, 115-126.
[9]左东启,等.模型试验的理论和方法[M].北京:水利电力出版社,1984.
[10]林皋,朱彤,林蓓.结构动力模型试验的相似技巧[J].大连理工大学学报,2000,40(1):1-8.
[11]高学奎,李辉.近场地震作用下深水桥墩的地震响应分析[J].工程抗震与加固改造,2006,28(3):83-87.
[2]Palmer A C,Goodman D J,Ashby M F,et al.Fracture and its role in determining ice forces on offshore structures[J]. Ann.Glaciology,1983,4(1):216-221.
[3]王鹤.动冰力模型试验模型律研究[D].天津大学,2003.
[4]黄淼,史清增,宋安.动冰力模型试验模型律研究[J].中国海上油气,2007,19(6):419-423.
[5]史庆增,徐继祖,宋安.冰力模型实验[J].冰川冻土, 1990,12(2):117-122.
[6]张运良.冰荷载的识别及冰激振动的实验与数值模拟[D].大连理工大学,2002.
[7]Cornett A M,Timco G W.Ice loads on an elastic model of molikpaq[J].Applied Ocean Reasearch,1998:105-108.
[8]Palmer A,Johnstor I.Ice velocity effects and ice force scaling[C].Proceedings of the IUTAM Symposium,2000, 115-126.
[9]左东启,等.模型试验的理论和方法[M].北京:水利电力出版社,1984.
[10]林皋,朱彤,林蓓.结构动力模型试验的相似技巧[J].大连理工大学学报,2000,40(1):1-8.
[11]高学奎,李辉.近场地震作用下深水桥墩的地震响应分析[J].工程抗震与加固改造,2006,28(3):83-87.
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