摘要
某游泳馆为较复杂的多层框架结构,其采用后张法预应力混凝土梁作为屋面结构体系,满足了游泳馆内部大跨度的空间要求,以及屋面兼作室外运动场的功能要求。文章从必要性、合理性,以及泳池潮湿环境对耐久性的影响3个方面论证了预应力混凝土结构在本工程中的应用是最为有效的方法,同时通过正截面、斜截面承载力计算,以及从最为关键的挠度控制、裂缝计算等层面阐述了预应力混凝土梁的主要设计方法和设计过程。本文对预应力混凝土结构施工的难点做了简要说明,并对预应力混凝土结构未来的发展加以展望。
The natatorium is a complex frame structure.It uses post-tensioning prestressed concrete as the roof structure system,which properly solves the requirements of large internal span and the roof being a playground outside.The application of prestressed concrete structure in this project is proved to be the most effective method from necessity,rationality and the influence of the humid environment of the swimming pool on durability.Meanwhile,the main design methods and design process of prestressed concrete beams are explained through the calculation of the bearing capacity of the normal section and the oblique section,as well as the most critical deflection control and crack calculation.This paper briefly explains the difficulties in the construction of prestressed concrete structures,and looks forward to the future development of prestressed concrete structures.
作者
王卫东
Wang Weidong(PLA 92403 Logistics Department,Fuzhou Fujian 350007,China)
出处
《城市建筑》
2020年第27期55-57,137,共4页
Urbanism and Architecture
关键词
预应力混凝土结构
大跨度建筑
裂缝
挠度
prestressed concrete structure
long—span building
crack
deflection
