华东交通大学学报2017，Vol.34Issue(6)：60-65,6.
SD型模数式伸缩缝耦合动力学研究
Research on the Coupling Kinetics of SD Modular Expansion Joint
摘要
Abstract
Taking SD modular expansion joint as the research object, this paper studied the vertical and horizon-tal coupling dynamics of SD modular expansion joint by using the finite element analysis software ABAQUS. A complete model of coupling dynamics was established to simulate the vertical and horizontal vibration response characteristics of the center beam of a moving car through the expansion joint. The results show that the vertical vibration displacement and horizontal vibration displacement of the center beam does not influence each other beyond vehicle braking force and speed. Therefore, the study on the vertical and horizontal vibration response of the expansion joints can be studied independently to simplify the research and improve efficiency. The braking force has larger influence on the vibration displacement of the expansion joint. Taking the influence of braking force into consideration, the increase of horizontal vibration displacement would have a negative effect on the ex-pansion joint structure. Without considering the braking force, the maximum value of horizontal vibration dis-placement is 0.235 mm under Germany's specification and the maximum value of horizontal vibration displace-ment nearly approaches zero under China's specification; however, the maximum vertical vibration displacement is 21 percent smaller than that of the analysis under the conditions of China's specification. Under the condition of 80 km/h and 120 km/h, the maximum vertical vibration displacement of the expansion joints obtained by Ger-man specification was 16%and 19%respectively smaller than that of China's specification.关键词
SD型模数式伸缩缝/有限元分析软件/耦合动力学/振动响应特性/制动力/德国规范Key words
SD modular expansion joint/finite element analysis software/coupling dynamics/vibration re-sponse characteristics/braking force/Germany's specification分类
交通工程引用本文复制引用
程海根,梁宝明,占小剑,陈博文..SD型模数式伸缩缝耦合动力学研究[J].华东交通大学学报,2017,34(6):60-65,6.基金项目
国家自然科学基金项目(51068005) （51068005）
