钢纤维混凝土框架节点抗剪承载力的试验研究与机理分析  

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

作　　者：郑七振[1] 魏林[1] 

机构地区：[1]上海理工大学,上海200093

出　　处：《土木工程学报》2005年第9期89-93,共5页China Civil Engineering Journal

摘　　要：通过对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的协调受力问题,指出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。并在此基础上给出了节点抗剪强度的计算公式,本文所提出公式的计算结果与试验结果吻合较好。Based on experiments on 9 edge joints of steel fiber concrete frames, the failure process and characteristics of the joints are studied, and a mechanism model of “dual shear-compression region” in the core area af joints for shear capacity calculation is presented. This paper also discusses the problem that the stirrups and steel fibers work together in the joints area. Considering the vertical stirrups in SFC frame joints, the portion of shear beared by the steel fiber should be reduced. A shear capacity formula for these joints is presented, and the caleulation results are in good agreement with test data.

关 键 词：钢纤维混凝土 框架节点 剪压面 抗剪强度 

分 类 号：TU375.4[建筑科学—结构工程]