基于振动台试验的岸桥地震动态特性研究
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摘要
岸边集装箱起重机(岸桥)的大型化使其更易遭受自然灾害,研究大型岸桥结构地震响应特征和破坏形式是当前急需解决的问题。受试验条件限制,目前还无法对岸桥原型进行地震动力学试验,有限元仿真分析是目前使用最广泛的方法,但其结果的可靠性还有待商榷。针对某一大型岸桥结构进行有限元建模并进行一系列不同地震载荷工况下的时程分析,结合缩尺模型振动台地震模拟试验,综合分析岸桥结构的地震动态特性。试验结果分析能为岸桥的抗震研究及减隔振处理、模型试验提供参考依据。
The size increasing of container cranes has resulted in vulnerability to seismic loads. To explore the response characteristics and failure mode of large container cranes under earthquake loads is one of the problems needed to be solved urgently. Currently, due to the limitation of test conditions, it is impossible to conduct seismic dynamic test for the prototype of the container cranes. Finite element simulation analysis is the most widely used method, but the reliability of this method and its results remains to be discussed. In this paper, finite element modeling of a large container crane structure is carried out, and a series of time-history analyses under different seismic load conditions is performed. Based on the shaking table seismic simulation tests for the scaled model, the seismic dynamic characteristics of the container crane structure are comprehensively analyzed. The analysis of test results can provide a reference for seismic research, vibration reduction and isolation treatment and model test of container cranes.
The size increasing of container cranes has resulted in vulnerability to seismic loads. To explore the response characteristics and failure mode of large container cranes under earthquake loads is one of the problems needed to be solved urgently. Currently, due to the limitation of test conditions, it is impossible to conduct seismic dynamic test for the prototype of the container cranes. Finite element simulation analysis is the most widely used method, but the reliability of this method and its results remains to be discussed. In this paper, finite element modeling of a large container crane structure is carried out, and a series of time-history analyses under different seismic load conditions is performed. Based on the shaking table seismic simulation tests for the scaled model, the seismic dynamic characteristics of the container crane structure are comprehensively analyzed. The analysis of test results can provide a reference for seismic research, vibration reduction and isolation treatment and model test of container cranes.
引文
[1]李哲,胡吉全,王东.地震载荷作用下岸桥结构单参数畸变相似模型研究[J].振动与冲击动与冲击,2014,33(20):164-169.
[2]李哲,王贡献,胡吉全,等.基于惯性半径相似岸桥模型的地震试验[J].振动、测试与诊断测试与诊断,2016,36(5):972-978.
[3] AZELOGLU C O, SAGIRLI A. Active vibration control of container cranes against earthquake by the use of LMI Based Mixed H2/H∞State-Feedback Controller[J]. Shock and Vibration, 2015, Article ID 589289, 2015:1-13.
[4] JACOBS L, KOSBAB B D, LEON R, et al. Seismic behavior of a jumbo container crane including uplift[J].Earthquake Spectra, 2011, 3(27):745-773.
[5]李哲,王贡献.基于振动台的岸桥地震跳轨行为研究[J].武汉理工大学学报,2018,40(1):25-29.
[6]李哲,王贡献,胡吉全,等.大型岸桥地震反应分析中阻尼模型的讨论[J].噪声与振动控制,2015,35(2):15-18.
[6]金玉龙,吴天行.集装箱码头岸桥结构的动力相似分析与试验验证[J].上海交通大学学报,2012,46(10):1609-1615.
[7] JIN Y L, WU T X, LI Z G. Shaking table tests and numerical analysis for vertical seismic response of quayside container crane[J]. International Journal of Structural Stability and Dynamics, 2012, 12(5):1250034(1)-1250034(21).
[8] JIN Y L, LI Z G. Theoretical design and experimental verification of a 1/50 scale model of a quayside container crane[J]. Proceedings of the Institution of Mechanical Engineers, Part C:Journal of Mechanical Engineering Science, 2012, 226(6):1644-1662.
[9] Shimizu Construction Co. Ltd. Institute of Technology.1995 Earthquake Research Report on the South of Hyogo in Japan:1995.
[2]李哲,王贡献,胡吉全,等.基于惯性半径相似岸桥模型的地震试验[J].振动、测试与诊断测试与诊断,2016,36(5):972-978.
[3] AZELOGLU C O, SAGIRLI A. Active vibration control of container cranes against earthquake by the use of LMI Based Mixed H2/H∞State-Feedback Controller[J]. Shock and Vibration, 2015, Article ID 589289, 2015:1-13.
[4] JACOBS L, KOSBAB B D, LEON R, et al. Seismic behavior of a jumbo container crane including uplift[J].Earthquake Spectra, 2011, 3(27):745-773.
[5]李哲,王贡献.基于振动台的岸桥地震跳轨行为研究[J].武汉理工大学学报,2018,40(1):25-29.
[6]李哲,王贡献,胡吉全,等.大型岸桥地震反应分析中阻尼模型的讨论[J].噪声与振动控制,2015,35(2):15-18.
[6]金玉龙,吴天行.集装箱码头岸桥结构的动力相似分析与试验验证[J].上海交通大学学报,2012,46(10):1609-1615.
[7] JIN Y L, WU T X, LI Z G. Shaking table tests and numerical analysis for vertical seismic response of quayside container crane[J]. International Journal of Structural Stability and Dynamics, 2012, 12(5):1250034(1)-1250034(21).
[8] JIN Y L, LI Z G. Theoretical design and experimental verification of a 1/50 scale model of a quayside container crane[J]. Proceedings of the Institution of Mechanical Engineers, Part C:Journal of Mechanical Engineering Science, 2012, 226(6):1644-1662.
[9] Shimizu Construction Co. Ltd. Institute of Technology.1995 Earthquake Research Report on the South of Hyogo in Japan:1995.