动载荷教学中桥梁基础和支座的案例分析
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摘要
将力学概念与实际相结合,引入工程案例来讲解有关知识点,可提升学生的学习兴趣,并提高学生理论与实践相结合的能力。简介了桥梁、桥梁支座与基础,对桥墩受竖向冲击与水平冲击时的力学模型分别进行了简化。针对简化的桥墩模型,对比分析在动载荷作用下桥墩未加与施加橡胶隔震支座、未加与施加防撞墩前后的变形、动荷系数,据能量守恒原理分析讨论相关问题,提高学生对相关力学概念的理解能力。
Combining the concept of mechanics with practices, introducing engineering cases to explain relevant knowledge points can enhance students' interest in learning and improve the ability of students utilizing theory in practices. Bridge, bridge supports and foundations is described. The mechanical models of the pier that suffered vertical impact and horizontal impact are simpli?ed respectively. To the simpli?ed pier model, with and without the rubber isolation bearing, or the anti-collision pier, comparative analysis is carried on the deformation and dynamic load coefficient of the pier. According to the conservation of energy, the related problems are analyzed and discussed, and improve the understanding ability of students to related mechanics concept.
Combining the concept of mechanics with practices, introducing engineering cases to explain relevant knowledge points can enhance students' interest in learning and improve the ability of students utilizing theory in practices. Bridge, bridge supports and foundations is described. The mechanical models of the pier that suffered vertical impact and horizontal impact are simpli?ed respectively. To the simpli?ed pier model, with and without the rubber isolation bearing, or the anti-collision pier, comparative analysis is carried on the deformation and dynamic load coefficient of the pier. According to the conservation of energy, the related problems are analyzed and discussed, and improve the understanding ability of students to related mechanics concept.
引文
1 Apaydin NM,Bas S,Harmandar E.Response of the Fatih Sultan Mehmet Suspension Bridge under spatially varying multi-point earthquake excitations.Soil Dynamics and Earthquake Engineering,2016,84:44-54
2 Tang MC.Forms and aesthetics of bridges.Engineering,2018,4:267-276
3闫聚考,李建中,彭天波等.大跨度悬索桥主引桥碰撞效应振动台试验及数值研究.振动与冲击,2017,7(36):234-240Yan Jukao,Li Jianzhong,Peng Tianbo,et al.Shaking table tests and numerical analysis for pounding effect between main span and approach span of long-span suspension bridges.Journal of Vibration and Shock,2017,7(36):234-240(in Chinese)
4王文斌,赵小霞,陈玉元.建筑物基础隔震技术的进展.内陆地震,2006,20(2):172-177Wang Wenbin,Zhao Xiaoxia,Chen Yuyuan.The evolvement of basic technique of separation earthquake of building.Inland Earthquake,2006,20(2):172-177(in Chinese)
5刘延芳,叶爱君.减隔震技术在桥梁结构中的应用.世界地震工程,2008,24(2):131-137Liu Yanfang,Ye Aijun.Seismic isolation in bridge engineering.World Earthquake Engineering,2008,24(2):131-137(in Chinese)
6 Discovery:伟大工程巡礼-金门大桥建造工程Discovery:Great Engineering Tour Golden Gate Bridge Construction(in Chinese)
7孙训方,方孝淑,关来泰.材料力学.北京:高等教育出版社,2009Sun xunfang,Fang xiaoshu,Guan laitai.Material Mechanics.Beijing:Higher Education Press,2009(in Chinese)
8李雨阁,袁秀霞,张新中.建筑结构基础隔震技术及其应用.甘肃科技,2007,23(5):150-154Li yuge,Yuan xiuxia,Zhang xinzhong.Building structure base seismic isolation technology and its application.Gansu Science and Technology,2007,23(5):150-154(in Chinese)
9龚思礼等.建筑抗震设计.北京:中国建筑工业出版社,1994Gong Sili,et al.Seismic Design of Buildings.Beijing:China Building Industry Press,1994(in Chinese)
10何雪华.城市桥梁防撞设计研究.桥梁工程,2016,34(4):51-56He Xuehua.On urban bridge anti-collision design.Bridge Engineering,2016,34(4):51-56(in Chinese)
11秦进,魏东海.浅谈内河通航桥梁桥墩防撞设计.北方交通,2011,7:33-36Qin Jin,Wei Donghai.Brief discussion on anti-collision design of piers of navigable bridges in inland rivers.North Traffic,2011,7:33-36(in Chinese)
2 Tang MC.Forms and aesthetics of bridges.Engineering,2018,4:267-276
3闫聚考,李建中,彭天波等.大跨度悬索桥主引桥碰撞效应振动台试验及数值研究.振动与冲击,2017,7(36):234-240Yan Jukao,Li Jianzhong,Peng Tianbo,et al.Shaking table tests and numerical analysis for pounding effect between main span and approach span of long-span suspension bridges.Journal of Vibration and Shock,2017,7(36):234-240(in Chinese)
4王文斌,赵小霞,陈玉元.建筑物基础隔震技术的进展.内陆地震,2006,20(2):172-177Wang Wenbin,Zhao Xiaoxia,Chen Yuyuan.The evolvement of basic technique of separation earthquake of building.Inland Earthquake,2006,20(2):172-177(in Chinese)
5刘延芳,叶爱君.减隔震技术在桥梁结构中的应用.世界地震工程,2008,24(2):131-137Liu Yanfang,Ye Aijun.Seismic isolation in bridge engineering.World Earthquake Engineering,2008,24(2):131-137(in Chinese)
6 Discovery:伟大工程巡礼-金门大桥建造工程Discovery:Great Engineering Tour Golden Gate Bridge Construction(in Chinese)
7孙训方,方孝淑,关来泰.材料力学.北京:高等教育出版社,2009Sun xunfang,Fang xiaoshu,Guan laitai.Material Mechanics.Beijing:Higher Education Press,2009(in Chinese)
8李雨阁,袁秀霞,张新中.建筑结构基础隔震技术及其应用.甘肃科技,2007,23(5):150-154Li yuge,Yuan xiuxia,Zhang xinzhong.Building structure base seismic isolation technology and its application.Gansu Science and Technology,2007,23(5):150-154(in Chinese)
9龚思礼等.建筑抗震设计.北京:中国建筑工业出版社,1994Gong Sili,et al.Seismic Design of Buildings.Beijing:China Building Industry Press,1994(in Chinese)
10何雪华.城市桥梁防撞设计研究.桥梁工程,2016,34(4):51-56He Xuehua.On urban bridge anti-collision design.Bridge Engineering,2016,34(4):51-56(in Chinese)
11秦进,魏东海.浅谈内河通航桥梁桥墩防撞设计.北方交通,2011,7:33-36Qin Jin,Wei Donghai.Brief discussion on anti-collision design of piers of navigable bridges in inland rivers.North Traffic,2011,7:33-36(in Chinese)