特高拱坝横缝开度问题研究  

Study on transverse joint aperture in super-high arch dam

作　　者：樊启祥[1] 张国新[2] 刘有志[2] 周绍武[1] 

机构地区：[1]中国长江三峡集团公司,北京100038 [2]中国水利水电科学研究院,北京100038

出　　处：《水力发电学报》2012年第6期179-185,共7页Journal of Hydroelectric Engineering

基　　金：水利部行业公益科研专项(200801007);国家科技支撑计划项目(2008BAB29B05);国家自然科学青年基金(50909105);中国水科院科研专项基金(材集1028)

摘　　要：本文借溪洛渡拱坝为例,探讨特高拱坝横缝开度控制的有效方法与措施。利用横缝开合模拟技术,真实模拟大坝横缝在施工过程中横缝的开合叠代过程,在反馈分析其横缝开度的基础上,对未来横缝的开度进行了预测预报,针对大坝横缝开度偏小的特点,提出了有效增大横缝开度,增强可灌性的措施与方案,为保障拱坝横缝灌浆效果、保证大坝整体安全提供重要保障。This paper discusses effective crack preventing method and measure for super-high arch dam through a case study of Xiluodu arch dam.Transverse joint simulation techniques are effective and useful in modeling the opening-closing process of transverse joints at dam construction stage.With proper feedback information,these techniques can be used for prediction of the aperture development at the later stages.Adopting such a prediction method and taking advantage of transverse joint aperture that has a very small opening,this paper puts forth an effective measure that increases the aperture opening and improves the grouting quality,hence providing a better guarantee for integrated dam safety.

关 键 词：水工结构 温控防裂 有限元法 特高拱坝 横缝灌浆 水管冷却 

分 类 号：TV3[水利工程—水工结构工程]