混凝土-砌体组合托换梁受弯性能试验研究
发布时间：2018-12-20 10:57
【摘要】：设计制作了2种不同组合形式、3种不同连接筋间距的混凝土-砌体组合托换梁共7根,对其进行受弯性能试验研究,分析了试件的挠度、钢筋和混凝土应变、承载能力以及最终破坏形态。研究表明:连接筋的设置能够使混凝土梁与砖砌体保持良好的整体性能,共同受力;单面、双面钢筋混凝土-砌体组合托换梁的受弯承载力较对比试件均有增加,但连接筋间距的变化对承载力影响不大;基于混凝土、砖砌体材料简化的本构关系和基本计算假定,建立了适筋混凝土-砌体组合托换梁构件的正截面受弯承载力计算式,并将其理论计算值与试验值进行了比较,验证了其准确性。
[Abstract]:Two kinds of different combination forms and three kinds of concrete-masonry composite underpinning beams with different spacing of connecting tendons were designed and made. The flexural behavior of the beams was studied and the deflection of the specimens, the strain of steel bar and concrete were analyzed. Bearing capacity and ultimate failure form. The results show that the installation of connecting bars can make concrete beam and brick masonry keep good overall performance and common force; The flexural bearing capacity of reinforced concrete masonry composite underpinning beams on one side and two sides are all increased compared with the contrast specimens, but the change of the distance between connecting bars has little effect on the bearing capacity. Based on the simplified constitutive relation and basic calculation assumption of concrete and brick masonry materials, a formula for calculating the flexural bearing capacity of normal section of reinforced concrete masonry composite beam members is established, and the theoretical calculation value is compared with the experimental value. The accuracy is verified.
【作者单位】： 扬州大学建筑科学与工程学院;江苏省苏科建设技术发展有限公司;
【基金】：国家自然科学基金项目(51278445,51308490) 江苏省自然科学基金项目(BK20130450) 住房和城乡建设部科学技术计划项目(2013-K4-17)
【分类号】：TU398.5;TU317
[Abstract]:Two kinds of different combination forms and three kinds of concrete-masonry composite underpinning beams with different spacing of connecting tendons were designed and made. The flexural behavior of the beams was studied and the deflection of the specimens, the strain of steel bar and concrete were analyzed. Bearing capacity and ultimate failure form. The results show that the installation of connecting bars can make concrete beam and brick masonry keep good overall performance and common force; The flexural bearing capacity of reinforced concrete masonry composite underpinning beams on one side and two sides are all increased compared with the contrast specimens, but the change of the distance between connecting bars has little effect on the bearing capacity. Based on the simplified constitutive relation and basic calculation assumption of concrete and brick masonry materials, a formula for calculating the flexural bearing capacity of normal section of reinforced concrete masonry composite beam members is established, and the theoretical calculation value is compared with the experimental value. The accuracy is verified.
【作者单位】： 扬州大学建筑科学与工程学院;江苏省苏科建设技术发展有限公司;
【基金】：国家自然科学基金项目(51278445,51308490) 江苏省自然科学基金项目(BK20130450) 住房和城乡建设部科学技术计划项目(2013-K4-17)
【分类号】：TU398.5;TU317
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