广西大学学报（自然科学版）
廣西大學學報（自然科學版）
엄서대학학보（자연과학판）
JOURNAL OF GUANGXI UNIVERSITY （NATURAL SCIENCE EDITION）
2010年
1期
12-16
,共5页
桁架式钢骨混凝土%剪跨比%钢骨腹板含钢率%抗剪承载力
桁架式鋼骨混凝土%剪跨比%鋼骨腹闆含鋼率%抗剪承載力
항가식강골혼응토%전과비%강골복판함강솔%항전승재력
truss type steel reinforced concrete%ratio of shear%steel ratio of steel web%shear capacity
对4根桁架式钢骨混凝土简支梁的静力进行了试验,研究剪跨比和钢骨腹板含钢率对桁架式钢骨混凝土梁的斜截面抗剪承载力的影响以及斜截面的破坏形态.试验结果表明:随着剪跨比的升高,桁架式钢骨混凝土梁的斜截面抗剪承载力逐渐降低,而且其破坏形态由斜压破坏向剪切粘结破坏发展;随着腹板含钢率的提高,桁架式钢骨混凝土梁斜截面抗剪承载力明显得到提升.最后,推导了桁架式钢骨混凝土梁斜截面抗剪承载力公式,计算结果与试验结果符合良好.
對4根桁架式鋼骨混凝土簡支樑的靜力進行瞭試驗,研究剪跨比和鋼骨腹闆含鋼率對桁架式鋼骨混凝土樑的斜截麵抗剪承載力的影響以及斜截麵的破壞形態.試驗結果錶明:隨著剪跨比的升高,桁架式鋼骨混凝土樑的斜截麵抗剪承載力逐漸降低,而且其破壞形態由斜壓破壞嚮剪切粘結破壞髮展;隨著腹闆含鋼率的提高,桁架式鋼骨混凝土樑斜截麵抗剪承載力明顯得到提升.最後,推導瞭桁架式鋼骨混凝土樑斜截麵抗剪承載力公式,計算結果與試驗結果符閤良好.
대4근항가식강골혼응토간지량적정력진행료시험,연구전과비화강골복판함강솔대항가식강골혼응토량적사절면항전승재력적영향이급사절면적파배형태.시험결과표명:수착전과비적승고,항가식강골혼응토량적사절면항전승재력축점강저,이차기파배형태유사압파배향전절점결파배발전;수착복판함강솔적제고,항가식강골혼응토량사절면항전승재력명현득도제승.최후,추도료항가식강골혼응토량사절면항전승재력공식,계산결과여시험결과부합량호.
The steel truss reinforced concrete is a pattern of the lattice type steel reinforced con-crete. Static experiments on 4 simply-supported steel truss reinforced concrete beams were carried out and the impact of ratio of shear and steel ratio of steel web to the shear resistance, as well as the failure mode of the oblique section, of the beams were studied. Based on the experimental results, the following conclusions can be drawn: the shear capacity of the steel truss reinforced concrete beam is reduced along with the increase of the shear span-to-depth ratio, and the failure mode is varied from baroclinic damage to shear-bond damage; the shear capacity is boosted along with the enhancement of the steel ratio. The formula of shear capacity is obtained and verified by the test results.
