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)
2015年
5期
1060-1067
,共8页
剪跨比%活性粉末混凝土%拉-压杆模型%抗剪承载力%拱体效应系数
剪跨比%活性粉末混凝土%拉-壓桿模型%抗剪承載力%拱體效應繫數
전과비%활성분말혼응토%랍-압간모형%항전승재력%공체효응계수
shear span ratio%reactive powder concrete%strut-and-tie model%shear bearing capaci-ty%arch effect coefficient
为了研究高强钢筋活性粉末混凝土无腹筋梁的抗剪承载力,进行不同剪跨比条件下HRB500级钢筋活性粉末混凝土无腹筋简支梁的结构试验,构建基于由桁架模型演化而来的拉—压杆模型高强钢筋活性粉末混凝土无腹筋梁抗剪承载力计算公式,并引入拱体效应系数进行修正。研究结果表明:由于HRB500级钢筋和活性粉末混凝土的材料强度更高,试验梁的延性更好,其拉—压杆效应更加明显;将公式的计算值与试验值进行比对分析,其吻合程度较好,说明所推导的计算公式具有一定的实用性,可为同类研究提供参考。
為瞭研究高彊鋼觔活性粉末混凝土無腹觔樑的抗剪承載力,進行不同剪跨比條件下HRB500級鋼觔活性粉末混凝土無腹觔簡支樑的結構試驗,構建基于由桁架模型縯化而來的拉—壓桿模型高彊鋼觔活性粉末混凝土無腹觔樑抗剪承載力計算公式,併引入拱體效應繫數進行脩正。研究結果錶明:由于HRB500級鋼觔和活性粉末混凝土的材料彊度更高,試驗樑的延性更好,其拉—壓桿效應更加明顯;將公式的計算值與試驗值進行比對分析,其吻閤程度較好,說明所推導的計算公式具有一定的實用性,可為同類研究提供參攷。
위료연구고강강근활성분말혼응토무복근량적항전승재력,진행불동전과비조건하HRB500급강근활성분말혼응토무복근간지량적결구시험,구건기우유항가모형연화이래적랍—압간모형고강강근활성분말혼응토무복근량항전승재력계산공식,병인입공체효응계수진행수정。연구결과표명:유우HRB500급강근화활성분말혼응토적재료강도경고,시험량적연성경호,기랍—압간효응경가명현;장공식적계산치여시험치진행비대분석,기문합정도교호,설명소추도적계산공식구유일정적실용성,가위동류연구제공삼고。
In order to study the shear bearing capacity of high strength reinforced reactive powder concrete ( RPC) beams without stirrups, according to the structural experiment of HRB500 rein-forced RPC beams without stirrups under different shear span ratio, the calculation formula of the shear bearing capacity of the beams was deduced based on the strut-and-tie model evolving from the truss model, and the arch effect coefficient was quoted to amend this formula. The results show that the ductility of the test beams is better, and their strut-and-tie effect is more apparent, because the HRB500 reinforcement and RPC have higher material strength. The calculated results are corre-sponding with the test results well, which indicates that the deduced formula has some practical val-ue, and it can be referenced in similar researches.