市政技术2023，Vol.41Issue(12)：1-11,11.DOI:10.19922/j.1009-7767.2023.12.001
轻型化装配式盖梁构造设计与计算方法研究进展
Research on the Design and Calculation of Lightweight Assembly Bent Caps
摘要
Abstract
Overlong and overweight prefabricated bent have made higher requirements on transportation and lifting equipment and hindered the technical development and engineering promotion of fully assembled bridges,which has become a key problem to be solved urgently.The development of lightweight and high performance prefabricated bent caps with reasonable structure is an alternative solution to the above problems,which is worth paying attention to.In this paper,the key technologies and typical engineering applications of light weight bent caps are systemati-cally reviewed;Secondly,the research progress of the mechanical properties is discussed in detail.The future re-search direction is expounded as well;Finally,the calculation method and flow of flexural and shear capacity are summarized.The results show that when the prefabricated mold shell and the core concrete bonding strength is higher,the mechanical properties and failure mode of the prefabricated shell cover beam are similar to the destruction mode.UHPC hollow thin-bent cap has strong shear and crack resistance.However,the promotion of lightweight bent caps engineering still faces the problems such as the internal mold fixation and demolition,design and construction tech-nology standard formulation,lightweight pier node reliability connection and its seismic performance,which ur-gently need the improvement and breakthrough.关键词
轻型化盖梁/空心盖梁/组合盖梁/抗剪承载力/抗弯承载力Key words
lightweight bent cap/hollow cap beam/composite cap beam/shear capacity/bending capacity分类
交通运输引用本文复制引用
刘慈军,霍龙飞,贾俊峰,刘浩,方春平,吕文舒..轻型化装配式盖梁构造设计与计算方法研究进展[J].市政技术,2023,41(12):1-11,11.基金项目
国家自然科学基金项目(51778024) （51778024）
国家重点研发计划"交通基础设施"重点专项(2021YFB2600404) （2021YFB2600404）
北京市自然科学基金项目(8202002) （8202002）
