（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; 3 上海市城市建设设计研究总院(集团)， 上海 200125; 4 中铁二十四局集团有限公司， 上海 200071;）

［摘要］为降低对城市地面道路、管线、建(构)筑物的影响，管幕工艺逐渐成为在复杂环境下修筑地下结构的首选，通过40余年的工程实践，形成了不同的施工方法。其中的预应力管幕（PCR）工法通过对管幕纵向及环向施加预应力，达到减小构件尺寸、提高整体刚度、方便施工等效果。就PCR工法的主要结构形式、适用范围、特点、施工方式、未来发展等方面做简单综述。

［关键词］预应力； 预应力管幕(PCR)； 施工方法； 设计方法

中图分类号：TU378-8文献标识码：A文章编号：1002-848X(2018)08-0091-07

Study on technology and design method of prestressed concrete roof

Xiong Xueyu1,2, Gao Xinyu1, Wang Shousheng3,  Xu Jun4, Du Wei4

(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; 3 Shanghai Urban Construction Design ＆ Ｒesearch Institute(Group) Co．, Ltd．， Shanghai 200125， China;4 China Railway Twenty\|four Bureau Group Co., Ltd.， Shanghai 200071， China）

Abstract:In order to reduce the influence on the roads, pipelines and buildings, the tubular roof method has gradually become the first choice of the construction of underground structure in complex environment nowadays. After more than 40 years practice in engineering, there are various construction methods. The prestressed tubular roof(PCR) method exerts prestress to the tubular roof  in the longitudinal and annular directions to minimize component size, improve overall stiffness and create convenient construction. A brief review was conducted  for PCR method on the main structural form, scope of application, characteristic, construction method and the future development.

Keywords:prestress; prestressed concrete roof(PCR); construction method; design method

*上海市科学技术委员会科研计划项目 (16DZ1201600)。

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