倒T形预制截面预应力混凝土叠合梁正截面抗裂验算  

Calculation of Normal Section Crack Resistance of Prestressed Concrete Composite Beams with Invertible T-shaped Precast Beam

作　　者：曾垂军[1] 吴方伯[1] 郑伦存[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《湖南工程学院学报（自然科学版）》2004年第4期92-94,共3页Journal of Hunan Institute of Engineering(Natural Science Edition)

摘　　要：提出一种新型叠合梁结构———倒T形预制截面预应力混凝土叠合梁,阐述了其结构特点;在分析预制梁制作、运输吊装阶段和叠合梁使用阶段开裂前的截面应力应变的基础上,按弹性理论给出了相应阶段的正截面抗裂验算方法,为以后的试验研究及推广应用提供部分理论依据.a new kind of composite beam, prestressed concrete composite beam with invertible T-shaped precast beam, is presented and its structural characters are explained.Based on the analysis of stress and strain on precast beam section at manufacturing, transporting and assembling stages and composite beam section at using stage, calculating methods of normal section crack resistance at corresponding stage are presented by usng the elastic theory, which lays a foundation for subsequent experimental study and application.

关 键 词：叠合梁 倒T形预制梁 预应力混凝土 正截面抗裂 

分 类 号：TU37[建筑科学—结构工程]