- 摘 要
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(中國建筑西南設計研究院有限公司，成都 610081)
［摘要］常州市體育中心體育場采用了超長混凝土框架結構體系，由于混凝土收縮及溫度下降會在結構中產生拉應力，使結構可能出現有害裂縫。通過對樓板施加無粘結后張預應力來控制結構有害裂縫開展，介紹了如何計算混凝土的收縮應力、溫度應力，以及張拉過程中采用的計算模型及設計方法。
［關鍵詞］超長混凝土結構；框架結構；無粘結后張預應力；收縮應力；溫度應力
Super-length structure prestressed application for the Stadium of Municipal Sport Center in Changzhou
Chen Pingyou, Liu Yifeng(China Southwest Architectural Design and Research Institute Co.,Ltd.，Chengdu 610081，China)
Abstract: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.
Keywords:super-length structure; frame structure; unbonded post-tensioned prestressed; stress of concrete shrinkage;stress of concrete temperature
作者簡介：陳平友，碩士，一級注冊結構工程師，Email：cpucpy@sina.com。
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