混凝土受弯构件的界限配筋率与疲劳界限配筋率  

CRITICAL REINFORCEMENT RATIO AND FATIGUE REINFORCEMENT RATIO OF CONCRETE BEAMS REINFORCED

作　　者：钟伟杰 

机构地区：[1]汕头公路工程质量监督站,广东汕头515021

出　　处：《建筑技术开发》2006年第8期20-22,共3页Building Technology Development

摘　　要：对配有不同配筋率的混凝土简支标准梁（550mm×150mm×150mm）进行了静载和等幅疲劳荷载试验研究，试件配筋率分别为0％、0．29％、0．487％、0．934％和1．946％。这批试件的破坏形式为：折断破坏、弯拉破坏和剪压破坏。针对不同的破坏形式，提出了2个破坏界限配筋率的概念，并推导了可供配筋混凝土路面设计参考的界限配筋率。Experiment of simply supported concrete beams loaded by dead loading and equal amplitude fatigue loading was studied. These beams were reinforced with different reinforcement ratio of 0%, 0.29%, 0.487%, 0.934% and 1.946%, respectively. The types of the beams were broken failure, bending-tensile failure and shear-compression failure. Aimed at the different failure types of the beams, two concepts of critical reinforcement ratios were offered and inferred. The critical reinforcement ratios can be referenced for design of reinforced concrete pavement.

关 键 词：混凝土受弯构件 界限配筋率 等幅疲劳荷载 

分 类 号：TU375[建筑科学—结构工程]