| 转体桥施工阶段球铰平动-转动耦合摩擦运动理论研究 |
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| 引用本文： | 胡同旭,张拥军,赵敏,贾伟.转体桥施工阶段球铰平动-转动耦合摩擦运动理论研究[J].低温建筑技术,2019,41(9):64-67. |
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| 作者姓名： | 胡同旭 张拥军 赵敏 贾伟 |
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| 作者单位： | 青岛理工大学土木工程学院,山东青岛,266033;中铁二十局集团第二工程有限公司,北京,100142 |
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| 摘 要： | 针对动荷载作用下转体桥球铰连接曲面刚度薄弱导致桥梁结构易失稳问题,利用解析方法,对球铰面接触点平动-水平转动空间位置关系、不同摩阻力偶计算公式进行推导,进行了球铰结构关键部位在动力荷载作用下的摩擦运动理论研究。得出了转体桥球铰在动荷载作用下运动形式为双转动耦合问题,同时总结了平动与转动不同摩阻系数计算方法并推导出桥梁多质点模型的运动矩阵公式。
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| 关 键 词： | 转体结构 平动-转动 耦合运动 多质点 运动方程 |
THEORETICAL STUDY ON THE TRANSLATIONAL FRICTIONAL MOTION OF BALL JOINTS IN THE CONSTRUCTION STAGE OF A SWIVEL BRIDGE |
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| HU Tongxu,ZHANG Yongjun,ZHAO Min,JIA Wei.THEORETICAL STUDY ON THE TRANSLATIONAL FRICTIONAL MOTION OF BALL JOINTS IN THE CONSTRUCTION STAGE OF A SWIVEL BRIDGE[J].Low Temperature Architecture Technology,2019,41(9):64-67. |
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| Authors: | HU Tongxu ZHANG Yongjun ZHAO Min JIA Wei |
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| Affiliation: | (Qingdao University ofTechnology, School of Civil Engineering, Shandong Qingdao 266033, China;China Railway 20th Bureau Group Second Engineering Co., Ltd., Beijing 100142, China) |
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| Abstract: | Aiming at the weak stiffness of the bridge joint of the rotating bridge under the dynamic load, the bridge structure is easy to lose stability. This paper uses the analytical method to derive the positional relationship of the translational-horizontal rotation of the ball joint surface and the calculation formula of different frictional resistance. The theoretical study on the frictional motion of the key parts of the ball joint structure under dynamic loading is carried out. The motion form of the swivel bridge ball joint under the dynamic load is a double-rotation coupling problem. At the same time, the calculation method of different friction coefficient of translation and rotation is summarized and the motion matrix formula of the bridge multi-mass model is derived. |
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| Keywords: | swivel structure translation-rotation coupled motion multi-particle motion equation |
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