型钢再生混凝土梁受弯性能试验及承载力计算

陈宗平; 陈宇良; 覃文月; 薛建阳; 漆成

doi:10.13204/j.gyjz201309002

型钢再生混凝土梁受弯性能试验及承载力计算

doi: 10.13204/j.gyjz201309002

1.
1. 广西大学土木建筑工程学院,南宁530004;
2.
2. 西安建筑科技大学土木工程学院,西安710055

基金项目:

国家自然科学基金项目(50908057);八桂学者建设工程专项经费资助;广西自然科学基金项目(2012GXNSFAA053203,2013GXNSFDA019025);广西科技攻关项目(桂科攻12118023-3);广西理工科学实验中心重点项目(LGZX201102)

详细信息

作者简介:
第一作者:陈宗平，男，1975 年出生，博士，教授，博士生导师。email：zpchen@ gxu.edu.cn

中图分类号: TU398.9
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出版历程
- 收稿日期: 2013-01-25
- 刊出日期: 2013-09-20

TEST OF FLEXURAL BEHAVIOR AND ULTIMATE CAPACITY CALCULATION OF STEEL REINFORCED RECYCLED AGGREGATE CONCRETE BEAMS

1.
1. College of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;
2.
2. Coolege of Civil Engineering,Xi’an University of Architecture ＆ Technology,Xi’an 710055,China

摘要

摘要: 为了研究型钢再生混凝土(SRRAC)梁的受力性能，设计6个试件进行静力加载试验，考虑了再生粗骨料取代率和混凝土强度等级两个变化参数。通过试验，观察了该类梁的裂缝形态和破坏特征，获取其受力破坏全过程荷载-挠度曲线、截面的应变分布、极限承载力等重要参数；深入分析了再生粗骨料取代率、混凝土强度对型钢再生混凝土梁受力性能的影响规律；基于试验数据，探讨了型钢再生混凝土梁的正截面承载力计算方法。研究结果表明：再生粗骨料取代率对型钢再生混凝土梁的承载能力有一定的影响，随着取代率的增加，型钢再生混凝土梁的承载力有所提高，提高的幅度为5.95%~17.63%；受力过程中截面的应变分布符合平截面假定，型钢再生混凝土梁具有良好的承载能力和变形性能。最后，提出了型钢再生混凝土梁正截面极限承载力计算方法，研究结果可供相关科学研究和工程应用参考。
- 型钢 /
- 再生混凝土 /
- 梁 /
- 受弯性能 /
- 承载力计算
Abstract: In order to reveal the flexural behavior of steel reinforced recycled coarse aggregate concrete beams，6specimens were designed for flexural test． The study considered two impact parameters，which are coarse aggregatereplacement rate and concrete strength grade． Through this test，the whole mechanical process，crack distribution andfailure behavior of this kind of specimens were observed，and obtained the stress-strain distribution curves，theultimate bearing capacity and load-displacement curves parameters． Based on the test data，the impact of coarseaggregate replacement rate and concrete strength grade on the mechanical behavior of steel reinforced recycled coarseaggregate concrete beams was deeply analyzed． The result shows that the replacement rate influences the bearingcapacity of steel reinforced recycled concrete beams，and with replacement rate increases，the bearing capacityincreases from 5. 95% to 17. 63%; during loading process the section strain agreed with the plane sectionassumption，and the beams have good bearing capacity and deformation performance． Finally，put forward normalsection strength calculation method of steel reinforced recycled coarse aggregate concrete beams． The researchconclusions can be a help to relevant study and engineering application．
- steel /
- recycled aggregate concrete /
- beam /
- flexural behavior /
- capacity calculation

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参考文献(10)

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