正交法分析无腹筋FRP筋混凝土梁抗剪强度  

Shear strength of FRP reinforced concrete beams without stirrups based on orthogonal experiment method

作　　者：韩定杰 刘华新[1] 彭长岭 张志金[1] HAN Dingjie;LIU Huaxin;PENG Changling;ZHANG Zhijin(Civil Engineering and Architecture College,Liaoning University of Technolog)

机构地区：[1]辽宁工业大学土木建筑工程学院,辽宁锦州121000

出　　处：《混凝土》2018年第7期42-45,共4页Concrete

基　　金：辽宁省自然科学基金(2015020208)

摘　　要：为了研究无腹筋FRP筋混凝土梁抗剪强度,采用正交试验法分析剪跨比、纵向配筋率、梁的有效高度、混凝土抗压强度对无腹筋FRP筋混凝土梁抗剪承载力的影响。研究结果表明:剪跨比是影响无腹筋FRP筋混凝土梁抗剪承载力的主要因素,并且与梁的抗剪承载力成反比;其次,随着混凝土抗压强度的提高,梁抗剪承载力逐渐增大,近似呈线性关系;纵向配筋率与梁的有效高度对梁抗剪承载力有一定作用,但影响程度不明显。In order to study the shear strength of fiber reinforced polymer（FRP）reinforced concrete beams without stirrups,orthogonal test method was used to analyze the influence of shear span ratio,longitudinal reinforcement ratio,effective depth of beam and compressive strength of concrete on the shear strength of concrete beams with FRP bars without web reinforcement.The results show that the shear span ratio is the main factor that affects the shear strength of concrete beams reinforced with FRP bars without stirrups,and is inversely proportional to the shear bearing capacity of the beams.Secondly,with the increase of compressive strength of concrete,the shear capacity of the beam increases gradually,which is approximately linear.Longitudinal reinforcement ratio and the effective depth of beam have certain effect on shear capacity of the beam,but the impact is not obvious.

关 键 词：抗剪承载力 剪跨比 混凝土抗压强度 正交试验 FRP筋 

分 类 号：TU528.01[建筑科学—建筑技术科学]