自密实混凝土梁抗弯性能试验研究

孟志良; 孙建恒; 王国栋

doi:10.13204/j.gyjz201101023

自密实混凝土梁抗弯性能试验研究

doi: 10.13204/j.gyjz201101023

1.
1. 重庆大学材料科学与工程学院,重庆 400045;
2.
2. 河北农业大学城乡建设学院 ,河北保定 071001;
3.
3. 北方设计研究院 ,河北石家庄 050011

基金项目:

河北省科技攻关项目资助(06213701D)

详细信息

作者简介:
孟志良，男，1964年出生，教授。E－mail：mzhl888@126.com

中图分类号: TU375.1
计量
- 文章访问数: 83
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- PDF下载量: 90
- 被引次数: 0
出版历程
- 收稿日期: 2010-01-18
- 刊出日期: 2011-01-20

EXPERIMENTAL RESEARCH ON THE BENDING RESISTANCE OF THE SELF-COMPACTING CONCRETE BEAM

1.
1. College of Materials Science and Engineering,Chongqing University,Chongqing 400045,China;
2.
2. College of Urban and Rural Construction,Agricultural University of Hebei,Baoding 071001,China;
3.
3. North Design &Research Institute,Shijiazhuang 050011,China

摘要

摘要: 通过对6根自密实混凝土梁和2根普通混凝土梁的对比试验，研究自密实混凝土简支梁的抗弯性能。结果表明:1)自密实混凝土梁的极限荷载实测值的平均值与普通混凝土梁实测值相差不多，但高于其理论计算值;双向板极限荷载实测值与同强度等级普通混凝土双向板极限荷载实测值相差不大，且明显高于其理论计算值;2)两种混凝土梁荷载-挠度曲线形状、裂缝发展和破坏形态基本相同;3)自密实混凝土沿梁高的平均应变基本符合平截面假定。因此，采用混凝土理论设计自密实混凝土梁是合理的和安全的。
- 自密实混凝土 /
- 极限荷载 /
- 荷载-挠度曲线 /
- 破坏形态
Abstract: Six self-compacting concrete beams and two corresponding ordinary concrete beams of two different strength grades were used to study anti-bending properties of concrete freely supported beams.The results show: 1)the mean of the experimental data of ultimate load of self-compacting concrete beams is close to that of corresponding ordinary concrete beams,and is higher than its theoretical value;2) the loading-deflection curves,the crack development and the failure mode of the two kinds of beams are basically the same;3) the average strain along section height of self-compacting concrete beams can fit with the assumption of plane section basically.Therefore,it is reasonable and safe to design the self-compacting concrete beams according to the theory of ordinary concrete.
- self-compacting concrete /
- ultimate load /
- load-deflection curve /
- failure mode