黄麻纤维混凝土单轴拉伸理论曲线的建立及验证  

The Creation and Certification of the Jute Fiber Reinforced Concrete Axial Tensile Theory Curve

作　　者：于湖生[1,2] 迟德玲[2] 刘逸新[2] 严灏景[1] 

机构地区：[1]东华大学纺织学院,上海200051 [2]青岛大学纺织服装学院,山东青岛266071

出　　处：《青岛大学学报（工程技术版）》2010年第3期64-70,共7页Journal of Qingdao University(Engineering & Technology Edition)

摘　　要：建立黄麻纤维混凝土单轴拉伸应力-位移理论曲线可为实际工程设计提供依据并减少试验工作量和成本。基于自行设计的纤维拉拔试验,通过对几组黄麻纤维轴向和斜向拉拔试验曲线的理论假设和数学简化,建立了混凝土中黄麻纤维三维随机分布的细观拉拔模型。结果表明,通过该模型预测的黄麻纤维混凝土单轴拉伸应力-位移理论曲线与试验曲线基本相符,说明该模型是可行的。对其它相似类型的纤维可以采用同样方法从理论上预测该纤维混凝土的单拉曲线。Creation of the jute fiber reinforced concrete axial tensile theory curve can provide basis for engineering design and can reduce experiment work capacity and cost.Based on the individual pull-out test,hypothesis and simplifying the pull-out curves in axial and slanting direction of jute fibers,the mesoscopic pull-out model of three dimensions random distribution of jute fiber in the mortar is established.According to this model,the stress-displacement theory curve of the jute reinforced concrete is identical with the test curve.The model is viable.This method can apply for the similar type fibers to forecast the single tensile curve of the fiber reinforced concrete.

关 键 词：黄麻纤维 纤维混凝土 细观拉拔模型 单轴拉伸曲线 

分 类 号：TU528.58[建筑科学—建筑技术科学]