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钢筋混凝土简支梁受弯实验研究

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通过对五根钢筋混凝土简支梁受弯破坏过程的实验,分析了混凝土简支梁在集中荷载作用下的基本受力性能与规律,并研究了简支梁的破坏形态特征,结果表明:根据实验测得数据计算梁的跨中最大位移比规范计算所得的值略小;纵向受拉钢筋应力在未屈服前随荷载的增大呈线性增长关系;梁在正截面受弯破坏过程中,混凝土未开裂前其应变沿截面高度的变化规律基本符合平截面假定。
The experimental research of bending for the reinforced concrete simply supported beam
Through the experiments of five simply supported reinforced concrete beams in bending failure process. Analyzed the basic mechanical properties and rules,and the beam damage morphological characteristics of the concrete beam under a concentrated load. The results showed:the maximum displacement data which is calculated according to the experimental data is slightly smaller than that calculated according to the stand-ard,the longitudinal tensile stress increases linearly with the increase of the load before the yield,in the process of bending failure of beam’s cross section,the change law which the strain along the section height of the concrete before the crack happened to the concrete is basically con-sistent with the assumption of plane section.

reinforced concrete simply supported beamstructural experimentbending failure

刘陈桃、孙毅、贾庆、朱浪涛、孙博

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重庆科技学院建筑工程学院,重庆 401331

钢筋混凝土简支梁 结构实验 弯曲破坏

2015

山西建筑
山西省建筑科学研究院

山西建筑

影响因子:0.714
ISSN:1009-6825
年,卷(期):2015.(35)
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