地震载荷下核电桥式起重机的减震分析与研究
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摘要
地震可能在厂房未倒塌的情况下,导致桥式起重机"跳车",小车坠落以及连接件破坏等。结合桥式起重机的结构特点及工作形式,根据地震卓越周期及桥式起重机自振频率等参数,提出了适合桥式起重机的减震措施——安装隔震支座,运用时程分析方法对有无减震装置的桥式起重机结构进行地震响应分析。研究结果表明,隔震支座的减震效率高,在竖直载荷作用下,该方案对结构变形的最大减震率达到25%;水平沿大车轨道方向载荷作用下,该方案对结构应力的最大减震率达到30%。
The earthquake may lead to bridge crane"jump",trolley fall and connection damage when the factory building is not collapsed. According to the structural characteristics and working form of bridge crane and to the parameters such as the excellent period of earthquake and the natural frequency of bridge crane,the shock absorption measures suitable for bridge crane,the installation of isolation support,are taken. The seismic response of bridge crane structure with or without shock absorber is analyzed by using time history analysis method. Through the analysis and study,it is concluded that the way of mounting the isolation support is more efficient. Under vertical load,the maximum damping rate of the deformation of the structure is up to 25%,and under the action of horizontal load along the track direction of the vehicle,the maximum damping rate of the stress of the structure is up to 30%.
The earthquake may lead to bridge crane"jump",trolley fall and connection damage when the factory building is not collapsed. According to the structural characteristics and working form of bridge crane and to the parameters such as the excellent period of earthquake and the natural frequency of bridge crane,the shock absorption measures suitable for bridge crane,the installation of isolation support,are taken. The seismic response of bridge crane structure with or without shock absorber is analyzed by using time history analysis method. Through the analysis and study,it is concluded that the way of mounting the isolation support is more efficient. Under vertical load,the maximum damping rate of the deformation of the structure is up to 25%,and under the action of horizontal load along the track direction of the vehicle,the maximum damping rate of the stress of the structure is up to 30%.
引文
[1]杜晶.核电厂厂房结构地震反应分析[D].北京:中国地震局工程力学研究所,2015.
[2]尹训强,金煜皓,王桂萱.考虑土-结构相互作用效应和土质地基非线性的核岛厂房结构地震响应分析[J].岩土力学,2017,38(4):1114-1120.
[3]戴颖楠,闫维明,陈适才.某核电站结构-设备相互作用的地震反应分析[J].震灾防御技术,2017,12(3):655-666.
[4]郭耀杰,陈焰周,翟伟,等.新型轻钢房屋体系楼盖梁试验及有限元分析[J].武汉理工大学学报,2008(7):49-52.
[5] Lazzari Paula Manica,Filho Américo Campos,etc. Analyzing Reinforced Concrete Beams by Usingthe UPF Features of ANSYS[C]. Japan:International Structural Engineering and Construction Conference,2017.
[6]左维琦.基于ANSYS的大吨位双回转铁路起重机底架的优化设计及研究[J].机械制造与自动化,2016,45(5):140-141,182.
[7]Wei G,Yu Z,Wang Y. Response Spectrum Method for Seismic Response Calculation of Pipeline System Multiply Supported on Structures[J]. Journal of Civil Architectural&Environmental Engineering,2013,35(3):42-50,125.
[8]张节,沈建新.基于有限元法的装配工装离散化与优化设计[J].机械制造与自动化,2017,46(5):89-92,125.
[9]姜春环.高阻尼橡胶支座力学性能及其应用研究[D].北京:北京工业大学,2016.
[10]赵亮.橡胶隔震支座在实际工程中的应用[D].南京:东南大学,2017.
[11]孙新阳,杨维国,王萌.新型橡胶隔震支座临界行为理论模型研究[J].振动与冲击,2017,36(10):7-12,18.
[2]尹训强,金煜皓,王桂萱.考虑土-结构相互作用效应和土质地基非线性的核岛厂房结构地震响应分析[J].岩土力学,2017,38(4):1114-1120.
[3]戴颖楠,闫维明,陈适才.某核电站结构-设备相互作用的地震反应分析[J].震灾防御技术,2017,12(3):655-666.
[4]郭耀杰,陈焰周,翟伟,等.新型轻钢房屋体系楼盖梁试验及有限元分析[J].武汉理工大学学报,2008(7):49-52.
[5] Lazzari Paula Manica,Filho Américo Campos,etc. Analyzing Reinforced Concrete Beams by Usingthe UPF Features of ANSYS[C]. Japan:International Structural Engineering and Construction Conference,2017.
[6]左维琦.基于ANSYS的大吨位双回转铁路起重机底架的优化设计及研究[J].机械制造与自动化,2016,45(5):140-141,182.
[7]Wei G,Yu Z,Wang Y. Response Spectrum Method for Seismic Response Calculation of Pipeline System Multiply Supported on Structures[J]. Journal of Civil Architectural&Environmental Engineering,2013,35(3):42-50,125.
[8]张节,沈建新.基于有限元法的装配工装离散化与优化设计[J].机械制造与自动化,2017,46(5):89-92,125.
[9]姜春环.高阻尼橡胶支座力学性能及其应用研究[D].北京:北京工业大学,2016.
[10]赵亮.橡胶隔震支座在实际工程中的应用[D].南京:东南大学,2017.
[11]孙新阳,杨维国,王萌.新型橡胶隔震支座临界行为理论模型研究[J].振动与冲击,2017,36(10):7-12,18.