朱伯芳.中国水科院水工结构研究成果丰硕国际领先[J].中国水利水电科学研究院学报,2018,16(5):331-342
中国水科院水工结构研究成果丰硕国际领先
The research results of hydraulic structures of China Institute of Water Resources and Hydropower Research are abundant and leading the world
投稿时间:2018-06-20  
DOI:10.13244/j.cnki.jiwhr.2018.05.002
中文关键词:  水工结构  混凝土坝  温度应力  仿真分析  有限元计算
英文关键词:hydraulic structures  concrete dam  thermal stresses  simulating  Finite Element Analysis
基金项目:
作者单位
朱伯芳 中国水利水电科学研究院, 北京 100038 
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中文摘要:
      中国水科院在水工结构研究方面,成果丰硕,国际领先。首创了混凝土坝温度应力完整的理论体系和合理的温度控制措施,解决了大坝裂缝这个世界性难题;开创了拱坝优化数字模型、求解方法和计算软件,可节省坝体混凝土10%~30%,已应用于一百多座拱坝,节省投资二十余亿元;首创了混凝土坝仿真分析方法与软件,完全按照混凝土坝实际施工的气候条件、施工进度和随着不同高程的各层混凝土的不同龄期而变化的力学热学特性,计算结果与实测资料吻合一致,使大坝应力分析水平大幅度提高;首创了混凝土坝数值监控方法,把仪器观测与有限元计算方法结合起来,可求出从开工到运行各个时间大坝真实的应力场和安全系数,建立了大坝安全监控新的可靠平台;发展了混凝土徐变理论,提出了两个定理,可判断徐变对坝体应力和变形的影响,提出了混凝土徐变应力分析的隐式解法,提高了计算精度和效率,当时在全球率先编制了5个水工结构有限元计算程序,提供给全国有关单位,使我国水工结构计算进入"有限元时代",计算水平实现飞跃。
英文摘要:
      The research results of hydraulic structures of China Institude of Water Resources and Hydropow-er Research are abundant and leading the world. The methods of computing and control of thermal stresses of concrete dams are developed and there are no cracks in concrete dams at present. The theory of optimiZ-zation of the shape of arch dams has been developed, so the concrete of arch dams has been reduced by 10%~30%. Methods for stress analysis simulating the construction process of high concrete dams have been developed, so the accuracy of stress analysis is very high which is favourable for improving the quality of design and construction of high concrete dams. Numerical monitoring of concrete dams has been developed which is a new way for improving the safety control of concrete dams. The theory of creep of concrete has been developed, so the influence of creep on the stresses and deformations of concrete structures may be computed.
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