现浇梁内模支撑优化设计

宋效忠

中铁十四局集团第四工程有限公司，山东 济南  250000

摘要：为解决现浇梁跨度大、荷载大、内箱模板高、难以保证内模支撑稳定的问题，采用槽钢桁架内模支撑方案，工前利用Midas优化支撑结构设计，确定3种设计方案，合理布置槽钢支撑，减少材料用量，满足内模支撑稳定性要求。结果表明：3种现浇梁内模支撑结构方案均满足安全技术要求，通过经济性对比，确定了占用箱内空间少，用材最节省的最优方案。

关键词：现浇梁；内模支撑；优化设计；槽钢桁架

Optimization design of internal formwork support of cast-in-situ girder

SONG Xiaozhong

China Railway 14th Bureau Group 4th Engineering Co.,Ltd.，Jinan 250000，China

Abstract:To solve the problem of the large span, large load, and the high internal formwork of the cast-in-situ girder, which makes it difficult to ensure the stability of the inner formwork support, the internal formwork support scheme of channel steel truss is adopted. Midas is used to optimize the support design before construction and three design schemes are determined to make the reasonable layout of channel steel support and reduce the material consumption, which can meet the stability requirements of internal formwork support. The result show that the three schemes of the castinsitu girder all meet the safety technical requirements, but through the economic comparison, the optimal scheme with less space in the box and the least material consumption is determined.

Keywords:cast-in-situ girder；internal formwork support; optimization design; channel steel truss