架桥车模块化桥节强度分析与拓扑优化  

Strength analysis and topology optimization of the vehicle-launched bridge’s modular bridge

作　　者：胡明[1] 杨泽 吴梅 叶光友 赵德明 邱志强 HU Ming;YANG Ze;WU Mei;YE Guang-you;ZHAO De-ming;QIU Zhi-qiang(Faculty of Mechanical Engineering&Automation,Zhejiang Sci-Tech University,Hangzhou 310018;Hangzhou Zhengqiang Transmission Co.,Ltd.,Hangzhou 311201;Hangzhou Special Purpose Vehicle Co.,Ltd.,Hangzhou 310018)

机构地区：[1]浙江理工大学机械与自动控制学院,浙江杭州310018 [2]杭州正强传动股份有限公司,浙江杭州311201 [3]杭州专用汽车有限公司,浙江杭州310018

出　　处：《机械设计》2021年第5期19-25,共7页Journal of Machine Design

基　　金：国家重点研发计划项目(2018YFB1308100);CAST-BISEE项目(CAST-BISEE2019-001)。

摘　　要：以某型架桥车模块化桥节为研究对象,分别建立模块化桥节单节成桥和双节成桥的有限元计算模型,分析实际使用工况,选取两种代表车型确定加载工况,对桥节结构进行静力分析,得到各工况下应力和位移情况,验证模块化桥节满足承载要求。以桥节结构应变能最小(即结构刚度最大)为优化目标,在保证桥节满足强度要求的约束条件下对模块化桥节进行拓扑优化。结果表明,在最大应力只增大1.42%的情况下,使桥节减重12.5%,实现模块化桥节的轻量化设计,为模块化桥节结构进一步优化设计提供依据。In this article,with the focus on the modular bridge of a certain vehicle-launched bridge,the finite-element calculation models are set up for single-bridged modular and double-bridged modular. The analysis is conducted on the actual working conditions and two representative vehicles are selected in order to identify the loading conditions. The static analysis is performed to work out the stress and displacement under various working conditions,thus verifying that the modular bridge meets the load requirements. With the minimum strain energy( the maximum structural rigidness) as the optimization goal,the modular bridge is subject to topology optimization,while the modular bridge meets the strength requirements. The results show that when the maximum stress increases merely 1. 42%,the weight of the modular bridge reduces 12. 5%. Thus,the lightweight design of the modular bridge has been realized. This provides basis for further optimization of modular bridge structures.

关 键 词：架桥车 模块化桥节 静力分析 拓扑优化 ABAQUS 

分 类 号：U441.4[建筑科学—桥梁与隧道工程]