基于超长混凝土结构的温度效应分析与工程实践研究

Research on analysis of temperature variation and engineering practice based on super-long concrete structures

为了缓解温差效应带来的混凝土结构开裂问题,文中基于超长混凝土结构,对包括混凝土材料温度应力、收缩及徐变在内的温度效应进行了分析,并提出了相应的超长混凝土结构设计方法。结合缓解温度应力的构造措施,将该方法应用到了实际工程实践中。经过Midas/Gen软件仿真和工程实践后发现,建筑物在使用数年后并未出现裂缝。由此可见,文中提出的设计方法和缓解温差收缩效应措施起到关键作用,并可为类似结构的设计与实现提供技术参考。

In order to alleviate the problem of concrete structure cracking caused by temperature difference effect,the temperature stress,shrinkage and creep of concrete are analyzed as well as the corresponding design method is proposed based on the super-long concrete structure in this paper. Combined with structural measures to relieve the temperature stress,the method is simulated by Midas/Gen and applied to an engineering practice.The results show that the building has no cracks after the completion and use for several years,suggesting that the proposed design method and structural measures are good for use and can provide technical reference for the design and implement of the similar concrete structure.