Temperature Field Analysis of CFRP-Reinforced Concrete Beams Under Fire

EasyChair Preprint 8000

Abstract

In recent years, Carbon Fiber Reinforced Plastic (CFRP) has been favoured in the field of building reinforcement for its high strength, high efficiency, lightweight, durability and ease of construction. The mechanical properties of CFRP-constrained concrete have also been extensively investigated by researchers, but most of them are limited to the ambient temperature case. In the event of a fire, the structural system of the building must be strong enough to maintain sufficient stability for a certain period so that the affected people can be safely evacuated. Therefore, from a safety point of view, it is necessary to study the fire resistance of the structure based on the normal performance of the building. In this paper, numerical simulations of the temperature field of CFRP-reinforced reinforced concrete beams under different conditions (without and with fire protection layer) and different working conditions (in the form of fire protection coating) at high fire temperatures were carried out using Abaqus software. Then a numerical finite element model is established for the test condition of specimen B2-1 in the research of Yan et al. and a heat transfer simulation analysis of the temperature field is carried out. CFRP does not contribute much to the fire resistance of concrete and, for fire-rated elements, fire protection coatings must be added to maximise the mechanical properties of CFRP. Further research can be carried out subsequently focusing on the way CFRP is bonded to the reinforced material.

Keyphrases: ABAQUS, CFRP, fire, temperature field

@booklet{EasyChair:8000,
  author    = {Lei Zhang and Yamo Cao and Tianyu Shen},
  title     = {Temperature Field Analysis of CFRP-Reinforced Concrete Beams Under Fire},
  howpublished = {EasyChair Preprint 8000},
  year      = {EasyChair, 2022}}