水资源与水工程学报
水資源與水工程學報
수자원여수공정학보
JOURNAL OF WATER RESOURCES AND WATER ENGINEERING
2014年
5期
17-21
,共5页
堆石料填筑标准%狭窄河谷%高面板堆石坝%应力变形%影响规律
堆石料填築標準%狹窄河穀%高麵闆堆石壩%應力變形%影響規律
퇴석료전축표준%협착하곡%고면판퇴석패%응력변형%영향규률
rockfill compaction standard%narrow valley%high CFRD%stress and deformation%influence law
为研究堆石料填筑标准对于狭窄河谷高面板堆石坝应力变形的影响规律,本文运用三维有限元法,以某高面板堆石坝工程为例,进行了堆石料不同填筑标准下的大坝应力变形特性的对比研究。结果表明:随着堆石料填筑标准的提高,坝体和面板的应力变形均基本呈现单调递减的变化规律,且堆石料填筑标准对坝体和面板应力变形的影响存在一个明显的“拐点”,如本文工程实例的主堆石料干密度影响“拐点”为2.16 g/cm3。因此,通过提高堆石料填筑标准,可以明显改善狭窄河谷中高面板堆石坝的应力变形状况,但应注意堆石料填筑标准对大坝应力变形的影响存在“拐点”这一特性。
為研究堆石料填築標準對于狹窄河穀高麵闆堆石壩應力變形的影響規律,本文運用三維有限元法,以某高麵闆堆石壩工程為例,進行瞭堆石料不同填築標準下的大壩應力變形特性的對比研究。結果錶明:隨著堆石料填築標準的提高,壩體和麵闆的應力變形均基本呈現單調遞減的變化規律,且堆石料填築標準對壩體和麵闆應力變形的影響存在一箇明顯的“枴點”,如本文工程實例的主堆石料榦密度影響“枴點”為2.16 g/cm3。因此,通過提高堆石料填築標準,可以明顯改善狹窄河穀中高麵闆堆石壩的應力變形狀況,但應註意堆石料填築標準對大壩應力變形的影響存在“枴點”這一特性。
위연구퇴석료전축표준대우협착하곡고면판퇴석패응력변형적영향규률,본문운용삼유유한원법,이모고면판퇴석패공정위례,진행료퇴석료불동전축표준하적대패응력변형특성적대비연구。결과표명:수착퇴석료전축표준적제고,패체화면판적응력변형균기본정현단조체감적변화규률,차퇴석료전축표준대패체화면판응력변형적영향존재일개명현적“괴점”,여본문공정실례적주퇴석료간밀도영향“괴점”위2.16 g/cm3。인차,통과제고퇴석료전축표준,가이명현개선협착하곡중고면판퇴석패적응력변형상황,단응주의퇴석료전축표준대대패응력변형적영향존재“괴점”저일특성。
In order to analyze the influence law of rockfill standard on stress deformation of the narrow valley high CFRD, the paper took a narrow valley high CFRD project for example and conducted a com-parative study of stress and deformation properties of rockfill dam under different compaction standards based on the three-dimensional finite element method.The results show that as the improvement of rock-fill standard, the stress and deformation of panel are gradually decreased.And there is an obvious“turn-ing point” for the impact of rockfill dam compaction standard on the stress and deformation of the panel. The “turning point” of main rockfill dry density is 2.16 g/cm3 .Therefore,with the improvement of rock-fill standard, we the stress and deformation conditions of the narrow valley high rockfill dam can be signif-icantly improved.But it should be paid attention that there is the“turning point” which exists in the im-pact of the rockfill dam compaction standard on its stress and deformation.