摘要
临时支架在桥梁结构的安装过程中具有重要作用,其拆除顺序对于结构的应力、变形影响很大。使用大型有限元软件建立了某钢桥全桥的整体有限元模型,对于临时支架体系的拆除过程进行了模拟研究,选择最优的拆除方案。分析结果表明:在最优拆除方案下,结构最大应力为169 MPa,最大变形为29.6mm,满足要求;该拆除方案可以保证结构的安全性,相比满堂支架体系降低了工程造价、缩短了工期。
Temporary supports play an important role in the installation process of bridge structure,and the removal sequence has great impact on structural stress and deformation.The overall finite element model of a steel bridge was built by finite element method.The removing process of temporary support system was simulated,and an optimal removing method was selected.The results showed that the maximum stress was 169 MPa,and the maximum deformation was 29.6mm,which could meet regulatory requirements.The proposed removing program could guarantee the safety of the structure,and reduce the project cost and shorten the duration compared to the full framing system.
出处
《钢结构》
北大核心
2015年第12期89-91,79,共4页
Steel Construction
关键词
钢桥
临时支架
施工模拟
拆除方案
有限元分析
steel bridge
temporary supports
construction simulation
removing program
finite element method
