型钢轻骨料混凝土梁弯曲性能的试验研究

刘凡; 翁晓红; 邵永健

doi:10.13204/j.gyjz200903015

型钢轻骨料混凝土梁弯曲性能的试验研究

doi: 10.13204/j.gyjz200903015

1.
苏州科技学院江苏省结构工程重点实验室,江苏苏州 215011

基金项目:

建设部科技研究基金项目

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- 被引次数: 0
出版历程
- 收稿日期: 2008-03-20
- 刊出日期: 2009-03-20

EXPERIMENTAL STUDY ON SHEAR PERFORMANCE OF STEEL REINFORCED LIGHTWEIGHT AGGREGATE CONCRETE BEAMS

1.
Jiangsu Key Laboratory of Structure Engineering,University of Science and Technology of Suzhou,Suzhou 215011,China

摘要

摘要: 为研究型钢轻骨料混凝土梁的弯曲性能,进行了8根型钢轻骨料混凝土梁和2根型钢普通混凝土梁的抗弯性能试验。试验表明,型钢轻骨料混凝土梁受力过程经历弹性、弹塑性和破坏3个阶段;开裂荷载约为极限荷载的15%左右,试件开裂对试验梁的刚度没有明显的影响;试验梁的屈服是以型钢的受拉翼缘屈服为标志;试件屈服前,平均应变的平截面假定成立;屈服后,平截面假定不再成立,此后型钢与混凝土间的滑移对试验梁的变形及裂缝宽度的影响加大;试验梁达到极限承载力以后,表现出良好的延性。可见型钢轻骨料混凝土梁的弯曲性能是优越的。
- 型钢轻骨料混凝土 /
- 梁 /
- 弯曲性能 /
- 延性
Abstract: In order to study the shear performance of steel reinforced lightweight aggregate concrete beams, fifteen steel reinforced lightweight aggregate concrete beams and two steel reinforced normal density concrete beams were tested. The results of test have indicated that the occurrence of shear adhesive failure could be avoided if reinforced certain stirrups in section steel concrete beams. Among seventeen testing beams, 7 were slanting pressure failure, and the other 10 were shear pressure failure. This test, as well as the test of Ref. [1], has showed that the ratio of shear to span had decisive influence on the failure mode of testing beams. When the ratio of shear to span satisfied 1.5, slanting pressure failure happened; when 1.53.0, shear pressure failure happened; and when 3.0, flexural failure happened. At the same time, the existence of section steel made the brittle performance of shear failure improve remarkably.
- steel reinforced lightweight aggregate concrete(SRLC) /
- beams /
- shear performance /
- failure mode

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参考文献(11)

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