钢纤维混凝土框架节点抗剪承载力试验研究  

EXPERIMENTAL STUDY AND MECHANISM ANALYSIS OF STEEL FIBER CONCRETE FRAME JOINTS′ SHEAR CAPACITY

作　　者：郑七振[1] 魏林[1] 唐葆华 

机构地区：[1]上海理工大学土木工程系,上海200093 [2]上海市机械施工公司,上海200072

出　　处：《工业建筑》2004年第9期57-60,共4页Industrial Construction

摘　　要：通过 9个钢纤维混凝土框架边节点的试验 ,研究了此类节点的破坏过程与破坏特点 ,提出了节点核心区抗剪计算的“双剪压”受力机理模式。探讨了节点区域箍筋与钢纤维在抗剪计算中协调受力问题 ,指出了配有抗剪箍筋的钢纤维混凝土框架节点中 ,应对钢纤维承担的剪力予以折减。在此基础上给出了节点抗剪强度的计算公式 ,公式计算结果与试验结果吻合较好。Based on nine experiments on edge joints of steel fiber concrete frame, the failure process and characteristics of the joints are studied, and the mechanism model of “double shear- compression zone” at joint core for shear capacity calculation is presented. The problem that the stirrups and steel fibers work together at the joints is also discussed. Considering the shear stirrups in SFC frame joints, the portion of shear carried by steel fibers should be reduced. As a result, the shear strength formula for these joints is presented, whose results agree well with the test results.

关 键 词：框架节点 抗剪承载力 钢纤维混凝土 箍筋 节点核心区 边节点 受力机理 试验研究 承担 剪力 

分 类 号：TU375[建筑科学—结构工程] TU528