Development of high performance joint element for seismic retrofitting and construction of mechanical model for joint elements

近年来，抗震加固已成为越来越重要的抗震薄弱结构。本研究旨在发展一种适用于各种结构的新型节点单元，并建立该节点单元的抗剪强度公式和力学模型，在本研究中，我发展了一种由钢圆盘和锚组成的新型节点单元。使用建议的节点单元进行剪切试验。试验结果表明，与常规抗震加固中的后锚固相比，该节点单元具有更高的抗剪强度和抗剪刚度。此外，根据试验的破坏模式，建立了抗剪强度公式和力学模型。

Recently, seismic retrofitting has become increasingly important for seismically weak structures. This study aims to develop a new joint element which can be used in various structures and to construct of a shear strength formula as well as a mechanical model of the proposed joint element.In this study, I developed new joint element which is consisted of a steel disk and an anchor bolt. The shear tests were conducted using the proposed joint element. As a result of tests, the proposed joint element has higher shear strength and higher shear stiffness than post-installed anchors which are used in usual seismic retrofitting. In addition, I constructed the shear strength formula and the mechanical model based on the failure mode of the tests.