预制预应力带肋底板混凝土叠合板的受弯疲劳性能试验研究  

EXPERIMENTAL RESEARCH ON BENDING FATIGUE BEHAVIOR OF COMPOSITE SLAB WITH PRECAST PRESTRESSED RIBBED PANELS

作　　者：姜德文 黄海林[1,2] 祝明桥[1] 张明亮 黄曙 JIANG Dewen;HUANG Hailin;ZHU Mingqiao;ZHANG Mingliang;HUANG Shu(School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Provincial Key Laboratory of Structures for Wind Resistance and Vibration Control,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Construction Engineering Group Co.,Ltd.,Changsha 410004,China;Engineering Civil Air Defense Quality Supervision Station of Changsha,Changsha 410013,China)

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201 [2]湖南科技大学结构抗风与振动控制湖南省重点实验室,湖南湘潭411201 [3]湖南建工集团有限公司,长沙410004 [4]长沙市人防工程质量监督定额管理站,长沙410013

出　　处：《工业建筑》2020年第3期76-83,共8页Industrial Construction

基　　金：湖南省自然科学基金青年基金项目(2018JJ3161);湖南省研究生科研创新项目(CX2018B666);湖南建工集团基础研究项目(JGJTK-2018003)。

摘　　要：板肋形式是影响预制预应力带肋底板混凝土叠合板弯曲疲劳性能的重要因素之一。为研究板肋形式对叠合板弯曲疲劳性能的影响规律,对一块T形肋底板叠合板试件与四块矩形肋底板叠合板试件的弯曲疲劳进行对比试验,研究不同板肋形式和疲劳荷载幅值对叠合板疲劳损伤程度的影响规律,得到了其破坏形态、裂缝分布规律、荷载-挠度曲线、荷载-应变关系曲线。结果表明:相同板肋形式随着疲劳荷载幅值增大,会导致明显的疲劳弯曲刚度退化,并且疲劳损伤也会显著增加,但叠合面疲劳损伤较小,表明叠合面的存在不会影响叠合板的受力性能,而不同板肋形式的矩形肋底板叠合板与T形肋底板基本表现出相同的弯曲疲劳性能。Slab-rib form is one of the important factors that affects the bending fatigue behavior of precast prestressed concrete composite slab. In order to study the effect of slab-rib form on bending fatigue behavior of composite slab,a comparative test of bending fatigue of one T-shaped ribbed plate composite plate specimen and four rectangular ribbed plate composite plate specimens was carried out. The parameters include slab-rib form and fatigue load amplitude.The failure mode,crack distribution,load-deflection curve,load-strain relation curve were obtained. The influence of slab-rib form and fatigue load amplitude on fatigue damage degree of composite slab was analyzed. The results showed that the fatigue bending stiffness of the plate decreased obviously and the fatigue damage increased obviously with the increase of fatigue load amplitude. However,the fatigue damage of superimposed surface was relatively small,which indicated that the existence of superimposed surface would not affect the mechanical propcrties of composite slab. The bending fatigue behaviors of rectangular ribbed composite slab was the same as that of T-shaped ribbed plate.

关 键 词：预制预应力 叠合板 矩形肋 T形肋 疲劳荷载幅值 弯曲疲劳性能 

分 类 号：TU37[建筑科学—结构工程]