先张法预应力简支空心板反拱度理论与施工因素的研究  

Research on Theory for Inverted Camber of Voidded Slab Prestressed by Pretensioning Method and Simply-Supported Along with on Factors for Construction

作　　者：于波[1] 

机构地区：[1]河北省交通规划设计院,石家庄050011

出　　处：《北方交通》2009年第4期81-84,共4页Northern Communications

摘　　要：通过检测张石高速公路中先张法预应力混凝土简支空心板梁的施工,对空心板的反拱度进行了理论计算与实际测量,并根据施工因素的影响,分析了引起反拱度偏差的各种原因,为先张法空心板反拱度的施工控制提供参考。Around construciton of simply - supported voidded slab girder of concrete prestressed by pretensioning method in detection of Zhang - Shi Freeway, the paper makes theoretical calculation and actual measurement of inverted camber of voidded slab, and analyzes varieties of reasons bringing about deviation of inverted camber, which provide reference for control of construcion of inverted camber of voidded slab prestressed b pretensioning method.

关 键 词：反拱度 收缩 徐变 控制应力 

分 类 号：U445[建筑科学—桥梁与隧道工程]