基于Midas的大直径独柱盖梁现浇支架优化设计  

Optimization Design of Cast-in-place Support for Large-diameter Single-column Cap Beam Based on Midas

作　　者：段新鸽 DUAN Xinge(The 3rd Construction Company Ltd.of China 16th Corperation,Huzhou 313000,Zhejiang,China)

机构地区：[1]中铁十六局集团第三工程有限公司,浙江湖州313000

出　　处：《建筑施工》2024年第7期1125-1128,共4页Building Construction

基　　金：中国铁建十六局集团有限公司科技研究开发计划(K2015-5B)。

摘　　要：在公路桥梁工程中,盖梁往往具有不同的形式,并有多种支架方案。在使用Midas软件进行整体建模计算时,不同结构层关键连接点需要正确处理才能起到正确的指导作用。以浙江省丽石浦大桥主桥为项目背景,探讨了大直径独柱桥墩接倒梯形体盖梁现浇支架设计问题,详细阐述了钢管桩立柱+贝雷梁+带隅角底模托架组合支架结构形式。采用Midas有限元软件对支架进行了整体建模分析,根据各构件应力状况,对支架杆件进行了优化调整,优化后的支架满足受力要求,经过施工实践检验安全可靠,可为类似结构设计提供参考实例和思路。In highway bridge engineering,bent caps often take various forms and are supported by different types fo brackets.When using Midas software for comprehensive modeling and calculation,the key connection points across different structural layers need to be accurately processed to provide correct guidance.Taking the main bridge of Lishipu Bridge in Zhejiang Province as a case study,the design of cast-in-situ brackets for inverted trapezoidal bent caps connected to large-diameter single-column pier is discussed.The combination of steel pipe pile column,Bailey beam,corner bottom formwork bracket is elabrated in detail.The Midas finite element software is used to carry out the comprehensive modeling and analysis of the bracket.According to the stress condition of each component,the bracket members are optimized and adjusted.The optimized bracket meets the force requirements and has proven to be safe and reliable through construction practice,providing a reference example and thought for similar structural designs.

关 键 词：大直径独柱盖梁 组合支架 优化设计 MIDAS 

分 类 号：TU745.2[建筑科学—建筑技术科学]