双向超长混凝土结构无缝设计温度场的建立及技术措施研究

Establishment of temperature field and analysis of technical measures in the joint-less design of two-direction overlong concrete structure

通过对沈阳地区气温的长期实地观测,建立了超长混凝土结构的整体温度场,解决了超长混凝土结构无缝设计的技术难点,为后续工程积累了宝贵经验;结合沈阳恒隆中街广场项目,基于该温度场对结构进行了温度效应模型分析,提出了防止温度应力作用引起的结构变形和裂缝等各项保障技术措施。结果表明:所建立的温度场和提出的技术措施是有效的,该建筑在使用中未出现因超长引起的裂缝。

Based on long-term of observations in Shenyang,the air temperature field of the whole building is established for overlong concrete structure,which solves the technical difficulty of joint-less design and accumulates valuable experience.Temperature analysis is done bases on this temperature field in project of Shenyang Heng-long Plaza and the technology measures that preventing the temperature stress deformation and crack are put forward.The results show that,the temperature field and technical measures puts forward are effective and the crack due to overlong doesn＇t appear in this building in use.