高桩码头超长结构温度应力控制措施与实践
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摘要
随着港工技术的发展,不设或少设伸缩缝的超长混凝土结构在越来越多大型工程得以应用。超长混凝土结构降低了施工难度,减少伸缩缝对结构抗震等的不利影响,但其因混凝土材料收缩和温度变化引起的变形较为严重。本文结合某高桩码头工程,分析超长混凝土结构在施工和运营期间中可能存在的温度应力,采取多种温控措施,减小结构变形,限制裂缝开展,满足结构安全、可靠、耐久性等要求。
With the development of port technology, the super-long concrete structure without expansion joints have been applied in more and more large-scale projects. The super-long concrete structure reduces the difficulty of construction and the adverse effect of expansion joints on the seismic resistance of the structure, but the deformation caused by shrinkage and temperature change of concrete material is more serious. Combining with a high-pile wharf project, this paper analyses the possible temperature stress of super-long concrete structure during construction and operation, adopts various temperature control measures to reduce structural deformation, limit crack development, and meet the requirements of structural safety, reliability and durability.
With the development of port technology, the super-long concrete structure without expansion joints have been applied in more and more large-scale projects. The super-long concrete structure reduces the difficulty of construction and the adverse effect of expansion joints on the seismic resistance of the structure, but the deformation caused by shrinkage and temperature change of concrete material is more serious. Combining with a high-pile wharf project, this paper analyses the possible temperature stress of super-long concrete structure during construction and operation, adopts various temperature control measures to reduce structural deformation, limit crack development, and meet the requirements of structural safety, reliability and durability.
引文
[1]崔帅.超长结构温度应力分析方法与控制措施[J].江苏建筑, 2017:1.
[2]张玉明.超长混凝土框架结构裂缝控制研究[D].东南大学, 2006:3-5.
[3]彭波.超长结构温度应力分析方法与控制措施[J].江苏建筑, 2012,(1):54-55.
[4]GB50010-2002混凝土结构设计规范[S].北京:中国建筑工业出版社, 2002.
[5]GB50666-2011混凝土结构工程施工规范[S].北京:中国建筑科学研究院, 2011.
[6]王铁梦.工程结构裂缝控制[M].北京:中国建筑工业出版社, 1997.
[2]张玉明.超长混凝土框架结构裂缝控制研究[D].东南大学, 2006:3-5.
[3]彭波.超长结构温度应力分析方法与控制措施[J].江苏建筑, 2012,(1):54-55.
[4]GB50010-2002混凝土结构设计规范[S].北京:中国建筑工业出版社, 2002.
[5]GB50666-2011混凝土结构工程施工规范[S].北京:中国建筑科学研究院, 2011.
[6]王铁梦.工程结构裂缝控制[M].北京:中国建筑工业出版社, 1997.