Mechanical behavior of post-installed anchorage between steel and concrete under high temperature

DOI

10.2991/ifeesm-17.2018.4How to use a DOI?

Keywords

Post-installed Anchorage, 3D Joint Model, ABAQUS, High Temperature.

Abstract

As a reliable technology for connecting a new steel element to the existing concrete structures, the post-installed anchorage is widely used in the field of structural retrofit and strengthening. In order to analyze the mechanical behavior of post-installed anchorage between steel and concrete under high temperature, the numerical simulation is carried out by ABAQUS software in this paper. Several 3D joint models of I-shaped steel beam connecting to concrete base are established with consideration of two parameters, the thickness of fire protection and embedment depth of bonded-in reinforcements. The natural fire curve and the inorganic adhesive are adopted. The results have been discussed and analyzed in the context of temperature field, load-displacement relationship at loading point and longitudinal displacement of bonded-in reinforcements. The results showed that the maximum temperature of bonded-in reinforcements could be controlled below 250 C if the thickness of fire protection is added up to 40mm. A calculation method is proposed by model data to predict the maximum temperature of bonded-in reinforcements. Both larger embedment depth and thicker fire protection can improve the residual bearing capacity of the joint after exposed to fire. The employment of inorganic adhesive has been verified to be an effective method to improve the bond performance between bonded-in reinforcements and concrete under high temperature.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Song Xue
AU  - Qun Xie
AU  - Ping-Ping Guan
PY  - 2018/02
DA  - 2018/02
TI  - Mechanical behavior of post-installed anchorage between steel and concrete under high temperature
BT  - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)
PB  - Atlantis Press
SP  - 16
EP  - 20
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-17.2018.4
DO  - 10.2991/ifeesm-17.2018.4
ID  - Xue2018/02
ER  -