摘要
为解决传统先张法预应力混凝土梁固定张拉反力台座建造或改造成本较高的问题,研发了移动式自平衡模板体系,该模板体系由反力装置和模板装置组成。其中,模板装置采用整体拆装式结构,包括底模、外模、内模和端模;反力装置由钢横梁、钢管、开口式横撑组成,使用过程中与预应力钢绞线形成自平衡体系。有限元分析表明:反力装置的钢管强度满足相关规范要求。
In order to solve the problem of high construction or renovation costs for fixed tensioning reaction pedestals of traditional pretensioned concrete beams,a mobile self-balancing mould system is developed,which consists of reaction devices and mould devices.Among them,the mould device adopts an integral disassembly and assembly structure,including bottom mold,outer mold,inner mold,and end mold.The reaction device consists of steel crossbeams,steel pipes,and open cross braces,forming a self-balancing system with prestressed steel strands during using.Finite element analysis shows that the steel pipe strength of the reaction device meets the specification requirements.
作者
刘殿生
吴晨磊
朱敏涛
LIU Diansheng;WU Chenlei;ZHU Mintao(Shanghai Construction Engineering Building Materials Technology Group Co.,Ltd.,Shanghai 200438,China)
出处
《混凝土与水泥制品》
2024年第6期72-74,共3页
China Concrete and Cement Products
基金
上海市科学技术委员会项目(23XD1432400)。
关键词
先张法预应力混凝土梁
张拉台座
移动式
模板
有限元分析
Self-balancing mould system of pretensioned concrete beam
Tensioning reaction pedestal
Mobile
Mould
Finite element analysis
