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	自密实堆石混凝土力学性能的试验研究
	石建军 ; 张志恒 ; 金峰 ; 张楚汉 ; SHI Jianjun ; ZHANG Zhiheng ; JIN Feng ; ZHANG Chuhan
	2010-07-19 ; 2010-07-19
关键词	水利工程 堆石混凝土 抗压强度 弹性模量 泊松比 hydraulic engineering rock-fill concrete compressive strength elastic modulus Poisson′s ratio TV431
其他题名	EXPERIMENTAL RESEARCH ON MECHANICAL BEHAVIOR OF SELF-COMPACTING ROCK-FILL CONCRETE
中文摘要	以试验为基础讨论堆石混凝土的力学性能,试验试样直接从自密实堆石混凝土大型试块中切割取样,其尺寸为1 500 mm×500 mm×500 mm。强度试验确定堆石混凝土的立方体抗压强度、棱柱体抗弯强度、棱柱体轴心抗压强度及其力学特征;控制自密实混凝土的自流动距离在1 500 mm范围内,可形成不低于自密实混凝土配制强度的堆石混凝土;堆石混凝土棱柱体轴心受压应力–应变关系曲线基本接近直线,其比例极限和强度极限接近,只有微小的塑性变形,破坏呈突发式纵向劈裂;试样断口形态表明:堆石混凝土中的块石与自密实混凝土界面具有较好的黏结性。; Among the innovative techniques for construction of concrete dams,the self-compacting rock-fill concrete(RFC) appears to be a prospect of future development.The self-compacting RFC can be used in the hydraulic engineering such as rock-fill arch dam,cofferdam and port.Based on the laboratory testst,he mechanical properties of RFC are dealt with.At firstt,he self-compacting concrete(SCC) is filled to the rock,and two RFC test blocks(1 500 mm�0 mm�0 mm) are formed;and then the samples are cut from the RFC test blocks directly.The RFC test blocks are divided into 10 groups according to the filling direction of the self-compaction concrete.Every group is cut into three prismatic samples with size of 150 mm�0 mm�0 mm;and the cubic samples(150 mm�0 mm�0 mm) are cut from the prismatic samples.The cubic and prismatic axial compressive strength and the prismatic bending strength of RFC are also obtained from the tests.It is shown that the RFC specimen may have a similar strength with SCC when the pouring and flowing distance is controlled within 1 500 mm;the stress-strain relationship appears to be linear with only a minor amount of plastic strain;and the samples show a splitting fracture behavior.Fracture surfaces demonstrate good cohesion conditions at the concrete-rock interface.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/75676]
专题	清华大学
推荐引用方式 GB/T 7714	石建军,张志恒,金峰,等. 自密实堆石混凝土力学性能的试验研究[J],2010, 2010.
APA	石建军.,张志恒.,金峰.,张楚汉.,SHI Jianjun.,...&ZHANG Chuhan.(2010).自密实堆石混凝土力学性能的试验研究..
MLA	石建军,et al."自密实堆石混凝土力学性能的试验研究".(2010).

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