摘要
针对大型吊装工程,引入结构应力测试技术,实现实时监测结构应力变化状态,为实际吊装过程提供有力而及时的数据支持.以4000吨履带起重机首次吊装工程为例,对被吊设备的裙座结构进行了加强设计,并通过了有限元分析.在实际吊装过程中,引入应力测试技术,进行了加强部位的应力测试,并与有限元结果对比,相互印证了有限元与测试结果的合理性与可信性,同时对结果进行了讨论,为进一步改善结构与机构提供了数据支持.应力测试技术的引入,将实时获知结构应力的变化状态,为现场指挥者提供了数据支持,便于正确判断指挥.
For heavy lifting constructions, the structural stress testing is proposed for real-time structural stress variation monitoring and timely data supporting. By using the first lifting by a 4000-ton crawler crane as an example, the skirt structure is designed and reinforced via finite element analysis （FEA）. During practical lifting process, the stress testing is applied for the enforced position. With comparison of the results from FEA and testing, the further structural and mechanism improvements are realized via data supporting. The real-time stress variation can assist on-site directors in correct judgment and instruction.
出处
《中国工程机械学报》
北大核心
2016年第1期77-82,共6页
Chinese Journal of Construction Machinery
基金
国家"八六三"高科技计划资助项目(2012AA041804)
关键词
吊装
有限元
应力测试
lifting
finite element
stress testing
