- 摘 要
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[摘要]介绍了新版《混凝土结构设计规范》中预应力混凝土结构构件设计计算、构造方面修订和新增的内容。要点为预应力作用参与相关荷载组合,预应力新材料,裂缝控制及裂缝宽度验算,考虑内力重分布进行调幅的计算,施工阶段验算要求,改进预应力混凝土收缩、徐变损失值计算,预应力混凝土局部承压间接加强钢筋的配置和防止预制预应力混凝土构件端部裂缝的配筋要求,预应力混凝土结构在地震区的应用及抗震设计,以及新增加无粘结预应力混凝土设计规定等。
[关键词]预应力混凝土结构构件;设计计算;预应力损失;构造;抗震设计
中图分类号:TU318.4文献标识码:A文章编号:1002-848X(2011)10-0146-06
Introduction of revision of Code for design of concrete structures part Ⅷ:Design requirements for structural members of prestressed concrete
Tao Xuekang, Li Dongbin, Wang Xiaofeng, Xu Youlin(China Academy of Building Research, Beijing 100013, China)
Abstract:Some newly revision in the design calculation requirements and detailing for structural members of prestressed concrete in the Code for design of concrete structures are introduced. The main points include the load combination of prestressing action, new materials, crack control and checking method, analysis on redistribution of internal forces, checking for construction situation, improved calculation for shrinkage and creep loss of prestress, bearing design of local anchorage zones and prevention of some cracks of general zones due to bursting and spalling forces, application range of prestressed concrete in seismic areas and seismic design, as well as the new design requirements for unbonded prestressed concrete members, and so on.
Keywords:structural member of prestressed concrete; design calculation; loss of prestress; detailing; seismic design
作者简介:陶学康,研究员,博士生导师;李东彬,研究员,建研科技股份有限公司副总工程师;王晓锋,副研究员;徐有邻,博士,研究员,结构所顾问。
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