桥用液压悬挂系统的疲劳分析-井冈山大学学报.PDF

第36 卷第3 期 Vol.36 No.3 冈山大学学报( 自然科学版) 2015 年5 月 May. 2015 Journal of Jinggangshan University (Natural Science) 6 6 冈山大学学报( 自然科学版) 章编号：1674-8085(20 15)03-0006-07 桥用液压悬挂系统的疲劳分析 * 李安虎，兰强强，卞永明，刘广军 （同济大学机械与能源工程学院，上海 201804 ） 摘 要：根据某双层开启桥的综合性能要求，设计了一种液压悬挂系统。通过模拟某沿海地区的风载历程及悬挂 系统竖直载荷，并基于 workbench 及 Fe-safe 软件对悬挂系统做了二轴疲劳分析。分析结果表明，悬挂系统能承 7 受的最小载荷谱块数为 1×10 ＞36500 块 （100 年），满足疲劳要求。它采用workbench 及Fe-safe 联合仿真对液 压悬挂系统进行疲劳分析，为类似多轴疲劳问题分析提供了思路。 关键词：双层开启桥；悬挂系统；载荷历程；多轴疲劳 中图分类号：U463.33 献标识码：A DOI:10.3969/j.issn.1674-8085.2015.03.002 THE FATIGUE ANALYSIS OF A HYDRAULIC SUSPENSION SYSTEM USED FOR A BRIDGE LI An-hu，LAN Qiang-qiang，BIAN Yong-ming，LIU Guang-jun （School of Mechanical and Energy Engineering, Tongji University, Shanghai 201804, China ） Abstract: A hydraulic suspension system was designed according to the overall performance requirements of a double bascule bridge. Two shaft fatigue analysis of the hydraulic suspension system was performed based on workbench and Fe-safe after the wind load history of certain coastal area and the vertical load of the suspension system were successfully simulated. The result shows that the suspension can bear load spectrum blocks 1 ×107 pieces which is bigger than the number of load spectrum blocks of the design lifetime 36500 pieces of 100 years ）. The workbench and Fe-safe were used to perform the fatigue analysis of the hydraulic suspension system which can provide ideas for the analysis of similar multiaxial fatigue problems. Key words: double bascule bridge; suspension system; load history; multiaxial fatigue 生