摘要
大坝混凝土由于水化放热常导致施工期裂缝产生。为缩短施工期并减少裂缝,对混凝土快速施工方式进行研究。采用有限元仿真模拟技术,结合具体工程,考察不同层厚和间歇期的施工情况对混凝土温度场和温度应力的影响,分析表明:薄层短间歇期的快速施工方式可减小层间约束应力,减小温度应力。该研究可为混凝土温控设计及现场施工提供理论依据。
Due to the hydration heat,cracks usually appear in dam during the construction,fast construction was studied to prevent crack and decrease progress.With the application of simulation,the influence of concrete lift and interval time on temperature and stress distribution of concrete were discussed,from the result,we can know that thermal stress decreases by fast construction with thin lift and short interval.This study will be reference for design of temperature control in dam.
出处
《混凝土》
CAS
CSCD
北大核心
2012年第10期137-138,143,共3页
Concrete
基金
国家自然科学基金(51109081)
关键词
快速施工
温控
防裂
fast construction
temperature control
crack prevention
