首页 | 本学科首页   官方微博 | 高级检索  
     

某重力坝岸坡坝段上游面裂缝对工作性态影响分析
引用本文:宫照光,高鹏,周秋景,李海枫.某重力坝岸坡坝段上游面裂缝对工作性态影响分析[J].中国水利水电科学研究院学报,2014(3):332-336.
作者姓名:宫照光  高鹏  周秋景  李海枫
作者单位:中国长江三峡工程开发总公司向家坝工程建设部,四川宜宾644625;中国长江三峡工程开发总公司向家坝工程建设部,四川宜宾644625;中国水利水电科学研究院结构材料研究所,北京100038;中国水利水电科学研究院结构材料研究所,北京100038
基金项目:国家自然科学基金资助项目(51209235,51109035);水利部公益性行业科研专项(201201050);十二五科技支撑计划课题(SQ2013BAJY4138B02);国家973计划课题(2013CB035904,2013CB036406);中国水利水电科学研究院科研专项(1412)
摘    要:某重力坝岸坡两个坝段上游坝踵附近存在裂缝,考虑极端恶劣情况,即不考虑上游面裂缝前混凝土,采用有限元和材料力学两种方法对大坝工作性态进行分析,给出结构变形、应力和抗滑稳定安全情况.结果显示,存在裂缝时,坝体刚度减小,顺河向和横河向变形值增大,坝踵和坝趾压应力值较设计情况略有增加,未出现应力恶化现象;坝段抗滑安全系数略有减小,仍满足安全要求.整体来看,现有裂缝对结构工作性态不会产生明显影响,坝体可以安全运行.

关 键 词:重力坝  上游面裂缝  变形  应力  抗滑稳定

Analysis of impact of upstream face cracks on working performance in slope dam section of a gravity dam
GONG Zhao-guang,GAO Peng,ZHOU Qiu-jing and LI Hai-feng.Analysis of impact of upstream face cracks on working performance in slope dam section of a gravity dam[J].Journal of China Institute of Water Resources and Hydropower Research,2014(3):332-336.
Authors:GONG Zhao-guang  GAO Peng  ZHOU Qiu-jing and LI Hai-feng
Affiliation:GONG Zhao-guang;GAO Peng;ZHOU Qiu-jing;LI Hai-feng;China Three Gorges Corporation,Xiangjiaba Project Construction Department.;China Institute of Water Resources and Hydropower Research;
Abstract:Cracks near dam heel exist in two dam sections of a gravity dam. In order to analyze the impact on working performance of the dam, the extreme case is considered that the concrete before the cracks are removed. Deformation, stress and stability against sliding are given with FEM and Mechanics of materials. The results show that the global stiffness decreases and deformation increases slightly with cracks in the dam. The compressive stress value of dam heel and dam toe increase, therefore the stress status is better than the integrated dam. The stability coefficients against sliding decrease slightly. Overall, the existing cracks will not have a significant impact on the structure working performance and the dam will work safely.
Keywords:gravity dam  upstream face crack  deformation  stress  stability against sliding
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《中国水利水电科学研究院学报》浏览原始摘要信息
点击此处可从《中国水利水电科学研究院学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号