（天津大学建筑工程学院，天津 300072）

［摘要］以传统的钢筋混凝土屋面板为基础，结合弦支结构（如张弦梁结构），提出了一种新型的预应力钢-混凝土复合屋面结构，即弦支混凝土集成屋盖结构。在对弦支混凝土集成屋盖结构进行较为系统的研究分析后，给出了详细构成及实现方法，提出了预应力设计方法，还给出了其中的预制钢筋混凝土板宜采用的形式和设计方法；弦支混凝土集成屋盖结构的自振频率分布相对较为密集，基频相对较小；在动力作用下的变形以上下振动为主，较少出现扭转等复杂变形。

［关键词］张弦梁；预应力；复合屋面结构；弦支混凝土集成屋盖结构

Analysis on basic characteristics of cable supported concrete roof structure

Chen Zhihua, Qiao Wentao

(School of Civil Engineering, Tianjin University, Tianjin 300072, China)

Abstract:Based on the traditional reinforced concrete roof slab and the cable supported structures such as the beam string structure, a new-style prestressed compound steel-concrete roof structure, cable supported concrete roof structure, was put forward. The systemic research on cable supported concrete roof structure was carried out. The detailed fabrication, the realization method and the prestressed design method of cable supported concrete roof structure were put forward. The proper pattern and design method of the precast reinforced concrete slab were suggested. The results indicate that the natural frequencies of cable supported concrete roof structure are close to one another, and the first naturad frequency is low under dynamic force. The deformation of the structure are mainly global vibration up and down, and the complex deformation such as torsion hardly occurs.

Keywords:beam string structure; prestress; compound roof structure; cable supported concrete roof structure  

新世纪优秀人才支持计划（NCET）。

作者简介：陈志华，教授，博士生导师，Email：zhchen@tju.edu.cn。

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