（1 同济大学预应力研究所， 上海 200092; 2 同济大学先进土木工程材料教育部重点实验室， 上海 200092）

［摘要］结合国家行业标准《预应力混凝土结构设计规范》（JGJ 369—2016）、上海市《预应力混凝土结构设计规程》（DGJ 0869—2015）以及相关研究内容，从新理论、新结构、新工艺及新材料等方面，对近十多年来我国预应力混凝土结构领域的一些进展进行介绍和分析。国家规范中强调了对次内力的全面考虑，并根据有限元分析结果，指出了复杂结构中考虑空间次内力的必要性。介绍了预应力型钢混凝土结构、体外预应力结构、预应力叠合构件等结构形式的设计方法，并指出了存在的不足及有待改进之处。阐述了环境温度对缓粘结技术施工的重要影响及设计、施工阶段的注意事项，宜避开高温季节作业。

［关键词］预应力混凝土结构； 设计规范； 次内力； 缓粘结技术

中图分类号：TU378, TU318 文献标识码：A文章编号：1002-848X(2018)08-0001-04

Research progress and design theory of modern prestressed concrete structure

Xiong Xueyu1,2, Yao Gangfeng1

(1 Institute of Prestressed Structures,  Tongji University, Shanghai 200092, China; 2 Key Laboratory of Advanced Civil Engineering  Materials（Tongji University）, Ministry of Education， Shanghai 200092, China)

Abstract:According to the national industry standard Code for design of prestressed concrete structures (JGJ 369—2016), Code for design of prestressed concrete structures of Shanghai (DGJ 08-69—2015) and the related research contents, some progress in China′s prestressed concrete structure design field in the past more than ten years were introduced and analyzed from the aspects of new theory, new structure, new technology and new materials. The general consideration of secondary internal forces was emphasized in the national code, and the necessity of considering the secondary internal forces in complex structures was pointed out according to the results of finite element analysis. Design methods of prestressed steel reinforced concrete structures, external prestressed structures and prestressed composite structures were introduced, and the shortcomings the areas for improvement were pointed out. The important influence of ambient temperature on the construction of delayed bonding technology and the matters needing attention in design and construction stages were discussed. It should avoid operation in high temperature season.

Keywords:prestressed concrete structure; design code; secondary internal force; delayed bonding technology

*国家自然科学基金资助项目（５１１７８３２８，５５７８４００），住房城乡建设部研究开发项目（２０１６-Ｋ５-０２０），上海市科学技术委员会科研计划项目（１６ＤＺ１２０１６００），上海市住房和城乡建设管理委员会科研项目（２０１６-００１-００３）。

作者简介：熊学玉，博士，教授，博士生导师，Email：xueyu@tongji.edu.cn。