CAJ | 학술논문

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。
통과대오근강근혼응토간지량수만파배과정적실험，분석료혼응토간지량재집중하재작용하적기본수력성능여규률，병연구료간지량적파배형태특정，결과표명：근거실험측득수거계산량적과중최대위이비규범계산소득적치략소；종향수랍강근응력재미굴복전수하재적증대정선성증장관계；량재정절면수만파배과정중，혼응토미개렬전기응변연절면고도적변화규률기본부합평절면가정。
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.