dam ›› 2015, Vol. 0 ›› Issue (6): 48-.

Previous Articles     Next Articles

Feedback analysis on concrete thermal stress in a RCC gravity dam after upstream dam surface's insulation board falling off

LI Xiu-lin, XIA Shi-fa, LI Rong, LI Meng and WANG He-ran   

  1. China Institute of Water Resources and Hydropower Research
  • Received:2015-08-03 Online:2015-12-08 Published:2015-12-08

某碾压混凝土重力坝上游保温板脱落后的混凝土温度应力反馈分析

李秀琳1，2，夏世法1，2，李蓉1，2，李萌1，2，王贺然3   

  1. 1.中国水利水电科学研究院，北京，100038；2.流域水循环模拟与调控国家重点实验室，北京，100038；3.北京市凉水河管理处，北京，100069
  • 作者简介:李秀琳（1982- ），男，山东费县人，工程师，主要从事大体积混凝土温度应力计算及水工混凝土无损检测工作。
  • 基金资助:
    国家自然科学基金资助项目51409284；清华大学水沙科学与水利水电工程国家重点实验室开放基金SKL?HSE-2015-C-02；河海大学水文水资源与水利工程科学国家重点实验室开放基金2014491311

PDF

Abstract: A RCC gravity dam's upstream face was in a state of bare because of the insulation board falling off in December 2010. As extremely low temperature outside in winter, short-term temperature drop caused large thermal stress in the upstream surface of concrete dam. In order to calculate thermal stress before and after the insulation board falling off, a feedback numerical simulation was made by 3-D finite element method based on measured temperature data. And the influence of insulation board on dam stress was evaluated.

Key words: roller compacted concrete, gravity dam, insulation board, thermal stress, feedback analysis

摘要： 2010年12月新疆某碾压混凝土重力坝上游面保温板脱落，坝面处于裸露状态。由于此时正值寒冬时节，外界气温极低，短时温度骤降导致坝体上游面混凝土内产生了较大的温度应力。通过实测温度资料，进行三维有限元反馈分析，计算保温板脱落前后混凝土温度应力的变化情况，评估了保温板脱落对坝体应力造成的影响。

关键词: 碾压混凝土, 重力坝, 保温板, 温度应力, 反馈分析

Copyright © 2019 《Dam & Safety》 |