常州体育中心体育场超长结构中预应力的应用  

Super-length structure prestressed application for the Stadium of Municipal Sport Center in Changzhou

作　　者：陈平友[1] 刘宜丰[1] 

机构地区：[1]中国建筑西南设计研究院有限公司,成都610081

出　　处：《建筑结构》2009年第9期67-69,90,共4页Building Structure

摘　　要：常州市体育中心体育场采用了超长混凝土框架结构体系,由于混凝土收缩及温度下降会在结构中产生拉应力,使结构可能出现有害裂缝。通过对楼板施加无粘结后张预应力来控制结构有害裂缝开展,介绍了如何计算混凝土的收缩应力、温度应力,以及张拉过程中采用的计算模型及设计方法。The super-length concrete frame structure is adopted for the Stadium of Municipal Sport Center in Changzhou. Because of the shrinkage in the concrete and the fall of temperature, the stress in the concrete structure may appear and it can make the crack in the concrete come forth. The design method of unbonded post-tensioned prestressed in the slabs and beams in the stand which can control the development of crack is introduced. And the stress of shrinkage and temperature in the concrete structure are calculated. The calculating model of the tension prosess of the prestressed structure is introduced.

关 键 词：超长混凝土结构 框架结构 无粘结后张预应力 收缩应力 温度应力 

分 类 号：TU757.14[建筑科学—建筑技术科学] TU755