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浅谈火车振动对龙茜工程供水管道的影响
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作者 李敏达 《中国农村水利水电》 北大核心 2008年第5期47-48,52,共3页
通过检查龙茜供水工程广深铁路(平湖)段PCP供水管道管节间偏转角及轴向缝隙,评估管道运行的安全性;对典型断面列车运行引起的人地振动速度、加速度、位移及频率进行监测,监测结果表明,火车振动相当于烈度为4-5度条件下的天然地震作用... 通过检查龙茜供水工程广深铁路(平湖)段PCP供水管道管节间偏转角及轴向缝隙,评估管道运行的安全性;对典型断面列车运行引起的人地振动速度、加速度、位移及频率进行监测,监测结果表明,火车振动相当于烈度为4-5度条件下的天然地震作用;根据监测数据,计算管节间轴向位移及管道接口偏转角与实测管节间轴向位移及偏转角对比,计算结果表明火车振动对管道安全运行直接影响很小,但长期振动易引发地基不均匀沉降,加速了管段事故的发生,可能是事故发生的“导火线”。 展开更多
关键词 PCP管 火车振动 振动监测
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公铁两用桥公路桥面在火车运行振动下现浇钢筋混凝土试验研究 被引量:4
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作者 王春福 殷殿有 《混凝土》 CAS CSCD 北大核心 1999年第3期45-50,共6页
关键词 公路路两用桥 桥面板 钢筋混凝土 火车运行振动
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Launching and Travelling Dynamic Analysis of Rocket Launcher System ──The Study of a Unified Model
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作者 王春峰 宋廷伦 《Journal of Beijing Institute of Technology》 EI CAS 1995年第2期221+215-221,共8页
A unified model which is used to study the launching and travelling dynamic properties of a rlcket/launcher system is established. In this model, the rocket, the launcher,and the launching vehicle are considered as a... A unified model which is used to study the launching and travelling dynamic properties of a rlcket/launcher system is established. In this model, the rocket, the launcher,and the launching vehicle are considered as an interacting dynamic system in order to study the dynamic interaction between the various parts of the system and the optimal parameter matching among the above mentioned parts. The following random factors are taken into account in this paper. road surface excitation. rocket mass center misalignment, thrust misalignment, dynamic of the rocket, and the cross wind. Based on this unified model, a computer simulation software is developed, some simulation work has been carried out, and certain beneficial results have been achieved. 展开更多
关键词 simulation dispersion analysis/travelling vibration multiple rocket
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