| 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 |
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| 引用本文： | 郑七振,魏林.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[J].土木工程学报,2005,38(9):89-93. |
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| 作者姓名： | 郑七振 魏林 |
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| 作者单位： | 上海理工大学,上海,200093 |
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| 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。
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| 关 键 词： | 钢纤维混凝土 框架节点 剪压面 抗剪强度 |
| 文章编号： | 1000-131X(2005)09-0089-05 |
| 修稿时间： | 2004年1月13日 |
EXPERIMENTAL STUDY AND MECHANISM ANALYSIS OF THE SHEAR CAPACITY OF STEEL FIBER CONCRETE FRAME JOINTS |
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| Zheng Qizhen,Wei Lin.EXPERIMENTAL STUDY AND MECHANISM ANALYSIS OF THE SHEAR CAPACITY OF STEEL FIBER CONCRETE FRAME JOINTS[J].China Civil Engineering Journal,2005,38(9):89-93. |
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| Authors: | Zheng Qizhen Wei Lin |
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| Abstract: | 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. |
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| Keywords: | steel fiber concrete frame joint shear-compression region shearing strenth |
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