复材网格箍筋混凝土梁受剪性能试验研究
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摘要
为研究复材网格箍筋混凝土梁的抗剪性能,设计了10根配置碳纤维复材网格箍筋混凝土梁和1根钢箍筋混凝土梁在集中荷载作用下的受剪性能试验,对梁的破坏模式、抗剪承载力、跨中位移、裂缝开展等情况进行了观察。通过试验主要研究了配箍方式、剪跨比两个变量对混凝土梁受剪性能的影响;在几何尺寸、混凝土强度、剪跨比、计算抗剪承载力相同条件下,对碳纤维复材网格箍筋混凝土梁和钢箍筋混凝土梁的抗剪过程进行了对比。
In order to study the shear behavior of concrete beams with CFRP grid stirrups,the paper designed the shear behavior experiment of 10 concrete beams with carbon fiber composite grid stirrups and one steel stirrup concrete beam under concentrated load. The failure mode,shear capacity,mid-span displacement of the beam and crack initiation were observed. Through the test,the effects of the way of configuring stirrups and the shear-span ratio on the shear performance of the concrete beams were studied. Under the same conditions of geometrical dimensions,concrete strength,shear span ratio and calculated shear capacity,the shearing processes of the CFRP grid stirrup concrete beam and steel stirrup concrete beam were compared.
In order to study the shear behavior of concrete beams with CFRP grid stirrups,the paper designed the shear behavior experiment of 10 concrete beams with carbon fiber composite grid stirrups and one steel stirrup concrete beam under concentrated load. The failure mode,shear capacity,mid-span displacement of the beam and crack initiation were observed. Through the test,the effects of the way of configuring stirrups and the shear-span ratio on the shear performance of the concrete beams were studied. Under the same conditions of geometrical dimensions,concrete strength,shear span ratio and calculated shear capacity,the shearing processes of the CFRP grid stirrup concrete beam and steel stirrup concrete beam were compared.
引文
[1]叶列平,冯鹏.FRP在工程结构中的应用与发展[J].土木工程学报,2006(3):24-36.
[2]吴智深.面向重大工程应用FRP若干核心研究问题[C]//第七届全国建设工程FRP应用学术交流会论文集.2011:20.
[3]刘宗全,岳清瑞,李荣,等.全FRP筋混凝土梁斜截面承载力研究进展[J].玻璃钢/复合材料,2017(1):109-115,35.
[4]刘宗全,岳清瑞,李荣,等. FRP网格材在土木工程中的应用[C]//第九届全国建设工程FRP应用学术交流会论文集.2015:102-106.
[2]吴智深.面向重大工程应用FRP若干核心研究问题[C]//第七届全国建设工程FRP应用学术交流会论文集.2011:20.
[3]刘宗全,岳清瑞,李荣,等.全FRP筋混凝土梁斜截面承载力研究进展[J].玻璃钢/复合材料,2017(1):109-115,35.
[4]刘宗全,岳清瑞,李荣,等. FRP网格材在土木工程中的应用[C]//第九届全国建设工程FRP应用学术交流会论文集.2015:102-106.