缓黏结预应力在公交立体停车库中的设计与分析  

Design and Analysis of Retard-Bonded Prestressed in Bus Parking Structure

作　　者：孙丰 SUNFeng(Shanghai Pudong Architectural Design&Research Institute Co.Ltd.,Shanghai 201206,China)

机构地区：[1]上海浦东建筑设计研究院有限公司,上海201206

出　　处：《工程建设与设计》2024年第17期12-16,共5页Construction & Design for Engineering

摘　　要：缓黏结预应力技术改善了有黏结预应力存在的灌浆孔洞、预应力筋锈蚀等问题,具有广泛的应用范围。论文结合国内首个采用缓黏结预应力技术的大型重载、超长、装配式公交立体停车库项目,介绍了缓黏结预应力技术在项目中的应用、计算分析和施工,以及超长结构温度作用、混凝土收缩和徐变的计算方法。结果证明,缓黏结预应力技术适用于大跨度、大荷载、超长的混凝土结构。The retard-bonded prestressed technique improves the problems of grouting holes and prestressed bars for corrosion that exist in bonded prestressed technique,and has a wide range of applications.Starting from the first retard-bonded prestressed technique project of large-span,large-load and over-long bus parking structure in China,this paper introduces the application,calculation analysis and construction of retard-bonded prestressed technique in this project,as well as the calculation methods of temperature effect,concrete shrinkage and creep of over-long structures.The results show that the retard-bonded prestressed technique is suitable for large-span,large-load and over-long concrete structures.

关 键 词：缓黏结预应力 预应力度 等效温差 等效荷载 

分 类 号：TU378[建筑科学—结构工程]