Mechanical Model of Adhesive Post-Installed Anchor Subjected to Cyclic Shear Force

Abstract

Recently, it has become increasingly important to instigate more widespread seismic retrofitting for seismically weak structures in Japan, which is frequently subject to massive earthquakes. Generally, post-installed anchors are used to connect the seismic retrofitting members to existing members. However, no computational models of post-installed anchors have yet been proposed in previous studies to evaluate stress-displacement relationships. Accordingly, we developed a new mechanical model for postinstalled anchors. In this model, the kinking behavior of anchor bolts, bearing behavior of concrete, and tensile behavior of anchor bolts are considered. The proposed model can reasonably simulate the mechanical behaviors of the previous test results.

Cyclic Behavior of Interfaces for Seismically Retrofitted RC Buildings

“…Additionally, a simple envelope model was constructed to estimate the mechanical behavior under combined stress (Katagiri et al 2019;Yamada et al 2022). The cyclic model of post-installed anchors was proposed in previous studies (Takase et al 2013(Takase et al , 2018(Takase et al , 2019Matsunaga et al 2021Matsunaga et al , 2022; however, a cyclic model for roughened surfaces has not been proposed yet.…”