文章摘要
宋慈勇,高学春.南水北调滏阳河渡槽混凝土夏季施工的三维仿真分析[J].江西水利科技,2017,(6):421-425
南水北调滏阳河渡槽混凝土夏季施工的三维仿真分析
3D Finite element method analysis of Fuyang River aqueduct in summer construction
  
DOI:
中文关键词: 开裂控制  温度应力  预应力渡槽  夏季施工
英文关键词: Cracking control  Temperature stress  Prestressed river aqueduct  Summer construction
基金项目:
作者单位
宋慈勇 中国水利水电第十三工程局有限公司 
高学春 中国水利水电第十三工程局有限公司 
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中文摘要:
      南水北调滏阳河渡槽为4跨简支梁预应力混凝土结构,夏季施工在早期温升和温降阶段产生温度和收缩裂缝,极易造成混凝土开裂,从而影响预应力混凝土渡槽结构安全性和使用寿命.本文开展温度场仿真分析,表明综合温控措施下混凝土最大抗拉强度远小于混凝土设计抗拉强度,开裂风险低;并建议从混凝土入仓前准备、浇筑过程和浇筑完成三个时段开展施工温度综合控制,实现混凝土综合抗裂,以确保工程的建设质量、安全性和使用寿命.
英文摘要:
      The Fuyang River aqueduct is 4 span simply supported pre-stressed concrete structure,and constructed in the early summer,temperature and shrinkage cracks was appeared due to the temperature rising and dropping in early age,and the safety,durability,and service ability of aqueduct structure were affected,and the comprehensive cracking control methods are essential to carried out.temperature and stress distribution were analyzed,and comprehensive temperature control measures were adopted during the construction,it is indicated that the maximum tensile strength is far less than the design tensile strength of concrete and engineering construction quality is ensured during construction.
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