动载荷教学中桥梁基础和支座的案例分析  

CASE STUDY OF FOUNDATIONS AND BEARINGS OF BRIDGES FOR TEACHING DYNAMIC LOADS IN MECHANICS

作　　者：赵俊青 荆宇航[1] ZHAO Junqing;JING Yuhang(Department of Astronautic Science and Mechanics, Harbin Institute of Technology, Harbin 150001)

机构地区：[1]哈尔滨工业大学航天科学与力学系,哈尔滨150001

出　　处：《力学与实践》2019年第1期82-85,共4页Mechanics in Engineering

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 simplified respectively. To the simplified 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.

关 键 词：桥墩 橡胶隔震支座 防撞墩 动载荷 动荷系数 

分 类 号：G642[文化科学—高等教育学]