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Proposal of Shear transfer mechanism between the anchor bolt and RC footing beam

锚栓与RC基础梁间剪力传递机构的提出

基本信息

批准号：
18560565
负责人：
NAKANO Katsuhiko
金额：
$ 1.06万
依托单位：
Niigata Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560565/
关键词：
one layer of shear reinforcement RC footing beam anchor bolt edge distance embedment length cone failure bond splitting failure side bond splitting failure 埋め込み長さ異形鉄筋プレート定着埋め込み深さ

项目摘要

The structure performance of RC members with one layer of shear reinforcement used by the RC foundations and the wall RC members is estimated on Allowable stress concept. Therefore, the modification performance is not taken into consideration by those valuation methods. In this paper, in order to clarify a problem when evaluating the structure performance of RC members with one layer of shear reinforcement, the flexural-and-shear experiment of the beam which used 180-degree hook and the steel unit with yielded shear strength for the shear reinforcement was conducted, and structure performance has been grasped. Moreover, the problem when applying the conventional valuation method was shown by comparing with the experimental result of RC beam component confined the shear reinforcement.As for the tensile resistance of these post-installed anchors, the design type of tensile resistance makes strength of concrete the important factor. However, many unknown points are left behind about the influence strength of concrete has on the embedment and the bond resistance mechanism of a post-installed anchor. Furthermore, high strength concrete is used abundantly by the high-rise apartment building etc. in recent years, and evaluation of the usability under the construction and structural performance is an important subject.In order to estimate the tensile resistance of the post-installed anchor, this paper aims at clarifying about the structural performance of the mechanical and bonded anchor embedded in concrete.As a conclusion, the following knowledge was acquired. The failure mode of bonded anchor is concrete cone and the splitting bond failure by the side of the embedded anchor. The experimental tensile resistance of the bonded anchor in the case of concrete corn failure mode is slightly smaller than the calculated value of a conventional valuation plan, and it in the case of splitting-bond failure is small.

根据许用应力概念，对钢筋混凝土基础和墙体单层剪力钢筋混凝土构件的结构性能进行了估算。因此，这些估值方法并没有考虑改装性能。为澄清钢筋混凝土单层抗剪加固构件结构性能评估中存在的问题，进行了采用180度钩钢单元受剪加固梁的抗弯抗剪试验，掌握了梁的结构性能。此外，通过与钢筋混凝土梁构件受剪加固试验结果的对比，揭示了常规计价方法在应用中存在的问题，对于这些后安装锚杆的抗拉力，抗拉力的设计类型使混凝土的强度成为重要因素。然而，混凝土强度对后锚的埋设和粘结抗力机理的影响还存在许多未知点。此外，近年来高强混凝土在高层住宅楼等建筑中的大量使用，对其在施工过程中的使用性能和结构性能的评估是一个重要的课题。为了估算后锚的抗拉力，本文旨在阐明埋入混凝土中的机械式和粘结式锚杆的结构性能。粘结锚杆的破坏形式为混凝土锥体破坏和埋入式锚杆侧向劈裂粘结破坏。在混凝土角部破坏模式下，粘结锚杆的试验抗拉力略小于常规计价方案的计算值，在劈裂粘结破坏模式下，粘结锚杆的抗拉强度较小。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Structural performance of Post-installed Adhesive anchors under tension loading and shear loading-Part2 Influence of Edges on Shear Resistance-

拉剪荷载作用下后装粘性锚栓的结构性能-第2部分边缘对抗剪力的影响-

DOI：
发表时间：
2008
期刊：
Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan Vol. C2
影响因子：
0
作者：
Sudo;T.;Ishihara;T. Azuhata;T. Midorikawa;M.;安藤祐太郎;安藤祐太郎;安藤祐太郎;Yutaro ANDO;Yutaro ANDO;Yutaro ANDO
通讯作者：
Yutaro ANDO

on Structural Performance of Anchor bolt on Short Edge Distance

短边距锚栓结构性能研究

DOI：
发表时间：
2007
期刊：
Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan Vol. C2
影响因子：
0
作者：
安藤祐太郎;中野克彦;安藤祐太郎;安藤祐太郎;安藤祐太郎;Yutaro ANDO;Yutaro ANDO;Yutaro ANDO
通讯作者：
Yutaro ANDO

on Strengthening Effects of RC foundations Polymer Cement Mortar

聚合物水泥砂浆对RC地基加固效果的探讨